Choosing a power supply for a screwdriver
The task can be accomplished in several details. For example, with a laptop charger, this rework is considered simple and unassuming. Therefore, if an unnecessary network block from a laptop is left at home, you can use it. Second detail. network block from a computer. This option implies a certain amount of knowledge and skills to work with a soldering iron. Another option is how to convert a screwdriver to a network one. engage the desired inverter welding. In the next section, we will describe in detail how to implement our plans in all three ways.
Tip: Pay attention to the device parameters. For effective drilling, the rpm must be at least 1300. For example, Bosch GSR 1440-LI and Makita DF347DWE machines have this characteristic.
Method number 2 (reconstruction based on a network unit from a computer)
For this type of reconstruction, only an AT class network unit is suitable. Such devices have a ventilation compartment, as well as buttons on. and off. The network block is used on many models of computers, so it will not be difficult for anyone to find an unnecessary part. Then check the output current, it should be at least 16 volts, and the power is 300.30 W.
- Disassemble the device and find the plate on which the wiring is fixed (board).
- Disable protection: locate the green electronic component on the board and attach to any other black wire.
- Find a design with two black, yellow and red wires (MOLEX pins). Attach or solder the extension cord to the yellow and black wires, and attach the other part to the screwdriver terminals. Now twist the mechanism.
How to convert a cordless screwdriver into a network: 3 basic methods
It is not surprising that almost every house or apartment has a screwdriver. Unfortunately, devices based on a wireless network source often run out of power and break down. Since it is expensive to buy a new battery, most owners convert their cordless screwdrivers to cordless ones. In this article, we will tell you how to remake the device using the parts at hand. We will also touch on the topic of why this type of equipment breaks down most often. Read carefully!
reconstruction based on laptop power supply
As already mentioned, this reconstruction method is considered simple and does not require much time. Check first what output voltage the device is designed for. The best option would be 12-19 watts. In the next step, remove the unusable batteries from the device with a screwdriver and disassemble the device.
- Disconnect the entry (sized for the laptop connector) and strip the wires.
- Take the contacts and simply solder them to the device.
- Select a location on the device for the wire and drill it. At the end of the action, fold the structure and check for operability.
Screwdriver alteration process
Why convert a cordless screwdriver to a network?
Battery-charged equipment periodically discharges if left unused. This fact is a problem, since the main components deteriorate when the charge in the battery drops frequently. As a result, during the first signs of a breakdown, the battery holds less and less charge. In such a situation, complete breakdown of the part cannot be prevented, it is better to either replace it or change it to a new one. By the way, the cost of the first and second options will be the same.
How to revive a dead rechargeable power tool battery easily
Tip: If the user is going to work with hard surfaces, choose devices with rotation parameters of at least 20 Nm. This is the Sparky BR2 10.8Li-C HD mechanism.
The second reason is to remake the device. quality of work. Owners of such devices will easily confirm that the torque process is sometimes interrupted. It is also annoying that the power is not the best level. again, the partial discharge is to blame. The situation is saved by connecting the device to the mains supply. Here are the benefits we get in the end:
- Charging time will be shortened and you can start working at any time.
- Functioning without restrictions, confidence that the device does not sit down halfway to the job done.
- Financial benefit: no need to periodically change the battery.
Tip: On high-quality equipment, there is protection against breakages, which is located near the nozzle. Such protection is available for devices Bosch PSR 1200, Bosch GSR 12V-15.
(reconstruction based on inverter welding)
Reconstruction of a screwdriver when using inverter welding involves lengthy checks and calculations for the fact that the necessary parts are working. The process of reworking itself is not complicated, it adheres to the same technology as in the previous methods. You just need to remove the old battery, and in its place, attach the cord entry to the contacts. In the case of inverter welding, you will also need to install a secondary coil.
Based on the article read, we can say that this goal can be achieved in different ways. For this, a number of items are used, such as: laptop charger, computer power supply and inverter welding. However, the most successful and uncomplicated reconstruction will be based on a laptop power supply. So, not a huge detail will not weigh down the apparatus and will work for a long time. Be careful, all actions related to electrical devices oblige you to follow safety rules.
See Converting a cordless screwdriver to a mains
Connecting the cable to the terminals of the charger and battery
Converting a cordless screwdriver to a power one requires creating a strong connection of the wire with the charging and battery contacts. When performing an operation on a charger, the cable to the terminals is usually connected by soldering, but this can be replaced by using alligator clips. Before starting work, the surface of the parts to be brazed is treated with acid. You can also use a special solder.
It is not recommended to use clamps when connecting the cable to the battery terminals. during operation, such a fastener will be disconnected. The only reliable solution is to solder the ends of the copper strand to the contacts. It is most convenient to use the battery of the screwdriver itself. It is preliminarily disassembled to remove spent batteries. At the same time, it is advisable to protect the skin of the hands and respiratory tract from the ingress of harmful substances contained in the old filling of the battery.
How to convert a cordless screwdriver into a network with your own hands: instructions, tools and materials
The screwdriver is one of the most commonly used types of tools in everyday life and production. This device is in demand for performing electrical and construction work, as well as for assembling furniture and other items, the design of which provides for threaded connections. The cordless screwdriver has such advantages as compactness and mobility. Nevertheless, many owners of this tool are often interested in how to convert a cordless screwdriver into a network.
What is the reason for this? When using it, one has to deal with such a disadvantage as low energy consumption, forcing the battery to be charged every 40 minutes of intensive use. On the other hand, with rare use of the device, the spontaneous discharge of the battery leads to its breakdown due to the destruction of its constituent elements. It is impossible to repair a battery that has become unusable, difficulties may arise with the acquisition of a new one: often only official representatives of the manufacturer sell the component parts, and the cost of a new battery is slightly inferior to the price of a new screwdriver.
How to avoid unnecessary operations using a computer power supply
The method described above has a significant drawback. its implementation is associated with certain difficulties. But there is an easier way out. To do this, you will need a power supply from any computer. Let’s figure out how to convert a cordless screwdriver into a network one with it.
The main advantage of a computer power supply is its versatility. With the correct connection of the wires, currents of any value can be obtained. it does not matter what parameters your instrument has. A screwdriver will be most convenient to use when using such a transformer.
The presence of a cooling system in the power supply unit guarantees its durability. It is important to place it in an insulating housing, to ensure that the device is grounded and to install an electrical outlet on the wall of the rectifier. Emergency shutdown of the power supply is carried out by a toggle switch located on the rear panel of the case.
Selection of power supply
The power supply provides the conversion of alternating current, the voltage of which is 220 volts. Screwdrivers consume direct current with a nominal value of 9-19 V, therefore, the connection to the network is carried out using an electronic transformer, for this purpose it is better to use products of the brands Toshibra and Feron.
Transformers of these brands are reliable in operation, compact enough, lightweight, do not complicate the movement of the tool. Their load characteristics correspond to the parameters that a screwdriver for the house has. decreasing under overloads, they protect the tool from damage. The design of the devices has 2 input and output wires, they allow you to supply power to halogen lamps and other types of electricity consumers with a voltage of 12 V.
Combination of a car battery with a portable power supply
This is one of the possible solutions to the problem. Consider how to convert a cordless screwdriver into a power one using a power supply. A soft cable is connected to the terminals of the tool, to the second end of which an electrical plug is attached. In order to manufacture a power supply unit, it is enough to connect a rectifier to any transformer with the parameters corresponding to the screwdriver data. Its task is to convert alternating current to 220 volts. Screwdrivers of different brands require a constant current supply of a certain amount, which can be adjusted by increasing or decreasing the number of turns on the transformer coil.
With a lack of experience in this area, it is better to use a ready-made transformer with the required characteristics and equip it with a rectifier. The rectifier bridge diodes must match the screwdriver model you have. Its connection is made according to the standard scheme.
Using inverter welding
If the house has an old inverter device, you can also use it to re-equip the screwdriver. But it must be borne in mind that the currents produced by welding do not correspond to the required ones, and this forces us to make changes in its design. The secondary coil must be connected to the accessories included in the device. This work requires analysis and calculations, which cannot be carried out independently without knowledge of radio engineering.
Design features of electronic transformers
The increased leakage inductance provides a dropping characteristic, the additional galvanic isolation increases the safety of the power supply. By changing the number of turns of the primary winding, you can adjust the output voltage by adjusting it to a certain type of screwdriver.
By tapping the secondary winding from the midpoint, it is possible to use not a diode bridge, but a full-wave rectifier equipped with only 2 diodes instead of 4. This will reduce power losses by 2 times.
Capacitors C1 and C2 smooth out low-frequency and high-frequency ripple, the HL1 LED can be used to check the operation of the unit. Resistor R1 limits the amount of charging current supplied by the capacitor, pull-up resistors R2-R7 provide starting of the power supply.
What are the benefits of changing the type of food
A household screwdriver with a failed battery can be switched to the mains supply by making some changes to its design. This will not require a significant expenditure of money, time and effort. At the same time, the advantages of such a transformation of the instrument are obvious:
- The need for regular battery charging will disappear, and with it the forced breaks in work, since the duration of such a procedure is 3 hours or more.
- A constant amperage that does not decrease as a result of gradual battery discharge will ensure constant torque.
- If there is no need to use the tool, its prolonged downtime will not lead to a deterioration in technical parameters.
The only drawback when working with a network screwdriver is the dependence on the presence of the mains.
(reconstruction based on inverter welding)
Reconstruction of a screwdriver when using inverter welding involves lengthy checks and calculations for the fact that the necessary parts are working. The process of reworking itself is not complicated, it adheres to the same technology as in the previous methods. You just need to remove the old battery, and in its place, attach the cord entry to the contacts. In the case of inverter welding, you will also need to install a secondary coil.
Based on the article read, we can say that this goal can be achieved in different ways. For this, a number of items are used, such as: laptop charger, computer power supply and inverter welding. However, the most successful and uncomplicated reconstruction will be based on a laptop power supply. So, not a huge detail will not weigh down the apparatus and will work for a long time. Be careful, all actions related to electrical devices oblige you to follow safety rules.
See Converting a cordless screwdriver to a mains
After converting a cordless screwdriver into a network, it is important to observe a number of requirements with particular care for safe operation:
reconstruction based on laptop power supply
As already mentioned, this reconstruction method is considered simple and does not require much time. Check first what output voltage the device is designed for. The best option would be 12-19 watts. In the next step, remove the unusable batteries from the device with a screwdriver and disassemble the device.
- Disconnect the entry (sized for the laptop connector) and strip the wires.
- Take the contacts and simply solder them to the device.
- Select a location on the device for the wire and drill it. At the end of the action, fold the structure and check for operability.
Method number 2 (reconstruction based on a network unit from a computer)
For this type of reconstruction, only an AT class network unit is suitable. Such devices have a ventilation compartment, as well as buttons on. and off. The network block is used on many models of computers, so it will not be difficult for anyone to find an unnecessary part. Next, check the output current, it should be at least 16 volts, and the power 300. 30 W.
- Disassemble the device and find the plate on which the wiring is fixed (board).
- Disable protection: locate the green electronic component on the board and attach to any other black wire.
- Find a design with two black, yellow and red wires (MOLEX pins). Attach or solder the extension cord to the yellow and black wires, and attach the other part to the screwdriver terminals. Now twist the mechanism.
How to connect to the charging station
Before deciding whether it is possible to charge the battery of a screwdriver with a charger, you need to remember that the charging unit of the screwdriver supplies a low voltage, with a long wire length, the voltage is lost, so it would be rational to connect through a meter cord with a cross section of 2.5 mm2 or more.
- Wires are attached to the contacts of the charging unit of the screwdriver. Spoiled nutrients are removed from the nest.
- A groove is made in the case, a cable is passed through it. It is proposed to seal the entry point with elastic material so that there is no backlash and the wire is held securely in place.
- Since the nest has lost its weight after removing the unusable elements, it is recommended to restore the balance by inserting some kind of load into the vacated space, otherwise the hand will get very tired during work, eventually harming the health of joints and ligaments.
- The cable and previously attached wires are connected together, the body is assembled.
As already mentioned, this reconstruction method is considered simple and does not require much time. Check first what output voltage the device is designed for. The best option would be 12-19 watts. In the next step, remove the unusable batteries from the device with a screwdriver and disassemble the device.
How to convert a cordless screwdriver into a network with your own hands
In case of improper storage, the batteries lose their capacity, do not meet the declared characteristics.
Screwdriver alteration process
Reasons for redesigning a cordless screwdriver
The lack of a power source makes any volatile thing stupid. It is almost impossible to remake a dead battery, there is only one way out. reworking a screwdriver into a network one. The high price of a new battery makes the purchase impractical, in order to save money, the owners of unused tools are wondering how to convert a cordless screwdriver into a network.
There are times when the used screwdriver is out of production, then it is almost impossible to find a new battery. A screwdriver without a battery is a completely useless thing that will collect dust on the garage shelf if nothing is done. The main advantages of the rework:
- The tool becomes operational, it may well replace a mini drill.
- No need to monitor battery level.
- The tightening torque is independent of the remaining battery charge.
The only drawbacks are the presence of a wire, dependence on the electrical network. After alteration, the device acquires an electric cable, which does not allow working in hard-to-reach places, far from the power source.
In search of a solution to the question “is it possible to connect a screwdriver to a charger”, you can stop at charging with a car AK-block. Modules with manually adjustable current, voltage are applicable. The connection is absolutely not complicated. just connect the input channels of the instrument motor with the contacts of the car charger.
Do-it-yourself conversion of a cordless screwdriver to a network
The lack of a power source makes any volatile thing stupid. It is almost impossible to remake a dead battery, there is only one way out. reworking a screwdriver into a network one. The high price of a new battery makes the purchase impractical, in order to save money, the owners of unused tools are wondering how to convert a cordless screwdriver into a network.
There are times when the used screwdriver is out of production, then it is almost impossible to find a new battery. A screwdriver without a battery is a completely useless thing that will collect dust on the garage shelf if nothing is done. The main advantages of the rework:
- The tool becomes operational, it may well replace a mini drill.
- No need to monitor battery level.
- The tightening torque is independent of the remaining battery charge.
The only drawbacks are the presence of a wire, dependence on the electrical network. After alteration, the device acquires an electric cable, which does not allow work in hard-to-reach places, far from the power source.
The disadvantage of this option is that the power supplies must be worn during work and installed in a well-ventilated place.
Converting a screwdriver to a network using laptop charging
In the event of a battery failure, a household screwdriver can be switched to mains power by making some changes to its design. This does not require a lot of expenditure of finance, time and effort. The positive nuances of this transformation are obvious: you do not need to constantly charge the battery, and at the same time, the forced downtime will go away. After all, the shortest duration for charging the device is more than 3 hours.
However, when deciding to perform such a transformation with your screwdriver, you should understand that from now on you will need an alternating current to work with it. You will no longer be able to use it away from communications.
If you need to connect the screwdriver to the network, you can use the charger from an old laptop. It has similar characteristics to a screwdriver, and it can be easily found in every home or workshop. But, nevertheless, check what output voltage is shown for your charging. In this case, chargers for 12-19V are suitable.
Scheme of your actions:
- We take out unusable batteries from a failed battery pack.
- We take charge from the laptop.
- Cut off the connector and strip the wires from insulation.
- We solder the bare wires or wrap them with electrical tape.
- We make an outlet for the wire in the case.
- Assembling the structure.
This manipulation will allow you to use the screwdriver at any moment, and without stopping for charging.
How to convert a cordless screwdriver to a network: 5 options for solving the issue
Why do you need to remodel a mains-powered screwdriver
In order for you to be able to use a screwdriver even in the most inaccessible places without unnecessary wires, at any time, the mobile screwdriver is converted to a network.
To carry out such a procedure is not so difficult as it seems at first glance. With the appropriate skills and all the necessary components, this process will take a little time.
Methods for converting a cordless screwdriver into a network vary in complexity. One of them. powering the charging from a laptop practically does not require knowledge and skills. To mount a computer power supply, you need to know how to handle a soldering iron, and to repurpose a Chinese adapter, you need to know how to handle a measuring device. In addition, there are several other methods for converting a cordless screwdriver directly into a network.
Namely:
- Using a power supply device from a personal computer instead of a battery;
- Giving new life to the car battery;
- Using, as source, a power supply from halogen lamps;
- By connecting the Chinese 24V power supply board.
For brainy craftsmen, it is not difficult to perform such manipulations. If you are not confident in your abilities, then it is better not to risk it and seek the help of a knowledgeable specialist.
Convenient screwdriver from the network: features of use
The cordless cordless screwdriver is a great companion in your home. Almost everyone who he has never let down can agree with this. Those who stopped working halfway have a completely different opinion. This tool will help you always and everywhere, but exactly until the time the battery is discharged. over, the quantity in it is limited. In moments of idleness, the battery can also deteriorate. Batteries usually last no more than three years. When this time expires, it has to be changed or sent to the museum of obsolete things. The situation is possible if you convert the screwdriver into a network one. There are enough ways to do this.
The power supply unit of the device provides the function of changing alternating current with a voltage of 220V. Standard screwdrivers consume a constant current, with a nominal value in the range of 9-18V. In this regard, connection to the network is carried out subject to the use of an electronic transformer. For these purposes, products of the Toshibra and Feron brands are most suitable.
Mains transformers of these brands are of high quality and reliable in operation. In addition, they are quite compact, lightweight, and do not complicate the work with the tool. Their load characteristics are close to those required for a standard screwdriver. In their design there are 2 input and output wires, which makes it possible to supply power to halogen lamps and other types of electricity consumers with a voltage of 12V. However, to use the converted device, you need to adhere to some rules.
Here they are:
- Let the appliance rest for 5 minutes every 20;
- Fix the cable at the elbow with your hand so that it does not interfere with the work;
- Clean the power supply from dust;
- Do not use too many extension cords;
- Do not use the device without grounding;
- It is forbidden to use a converted device for work at height.
Before each start of work with the converted device, make sure that it is working properly.
How to convert a battery device to a screwdriver from a 220 volt network
Today the screwdriver belongs to the devices that we very often use in everyday life. It is also irreplaceable in production. This device is suitable for a variety of electrical and construction work. With its help, furniture and other items are assembled, the design of which requires threaded connections.
The cordless screwdriver is compact and portable. But not everyone is happy with these advantages, because the device quickly runs out of battery, and you have to interrupt work halfway. Therefore, many owners of this tool are interested in the question of how you can convert a screwdriver with a battery to a network.
The reason for this decision is also the fact that when the device is not used for a long time, the battery is discharged on its own, which leads to a breakdown of the screwdriver due to the destruction of some elements. It is impossible to repair a failed battery, and it is not always possible to purchase a new one. Often, component parts can only be purchased from the official representatives of the manufacturer. Accordingly, the cost of a new battery will be almost equal to the cost of a new screwdriver. Therefore, some craftsmen come to the decision to turn the screwdriver into a network.
Materials and tools required for this:
- Charger from this screwdriver;
- His native battery;
- Soft stranded electrical cable;
- Soldering iron and solder;
- Insulating tape;
- Acid.
First, you need to solder the loose ends of the cable to the terminals of the charger. You need to know that copper wires of a cable with brass contacts can only be soldered after they have been treated with acid. Experts recommend using special solder, but sometimes the simplest methods are used in the form of acid treatment.
How to make a screwdriver from the network
When the batteries stop working due to the fact that they have simply outlived their life, many begin to wonder how they can fix the situation and remake their old cordless screwdriver into the network with their own hands. After all, it is no longer possible to repair a battery with a destroyed element, and the cost of a new one is almost equal to the purchase of a new screwdriver. But zealous and skillful owners came up with a way out. to power the screwdriver from the mains. Some were even able to invent a device that works simultaneously from the mains and from the battery. But it’s better not to do it.
Convenient screwdriver from the network: features of use
The cordless cordless screwdriver is a great companion in your home. Almost everyone who he has never let down can agree with this. Those who stopped working halfway have a completely different opinion. This tool will help you always and everywhere, but exactly until the time the battery is discharged. over, the quantity in it is limited. In moments of idleness, the battery can also deteriorate. Batteries usually last no more than three years. When this time expires, it has to be changed or sent to the museum of obsolete things. The situation is possible if you convert the screwdriver into a network one. There are enough ways to do this.
The power supply unit of the device provides the function of changing alternating current with a voltage of 220 V. Standard screwdrivers consume a constant current, with a nominal value in the range of 9-18V. In this regard, connection to the network is carried out subject to the use of an electronic transformer. For these purposes, products of the Toshibra and Feron brands are most suitable.
In order for the screwdriver to be comfortable and practical, it must be carefully looked after.
Mains transformers of these brands are of high quality and reliable in operation. In addition, they are quite compact, lightweight, and do not complicate the work with the tool. Their load characteristics are close to those required for a standard screwdriver. In their design there are 2 input and output wires, which allows you to supply power to halogen lamps and other types of electricity consumers with a voltage of 12V. However, to use the converted device, you need to adhere to some rules.
Here they are:
- Let the appliance rest for 5 minutes every 20;
- Fix the cable at the elbow with your hand so that it does not interfere with the work;
- Clean the power supply from dust;
- Do not use too many extension cords;
- Do not use the device without grounding;
- It is forbidden to use a converted device for work at height.
Before each start of work with the converted device, make sure that it is working properly.
How to convert a cordless screwdriver to a network: powered from a 220 volt network, DIY alteration
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You can extend the life of a cordless screwdriver if you convert it to a network one. Those who have used a cordless screwdriver at least once could not help but appreciate its convenience. Without getting tangled in the wires, at any time you can penetrate the device into hard-to-reach niches, bring it to the country house, or take it out into the street and patch up the playground. But all the advantages of such a device are good until the battery is discharged.
How to convert a cordless screwdriver to a network: powered from a 220 volt network, DIY alteration
Home »How to convert a cordless screwdriver to the mains: powered from a 220 volt network, DIY alteration
Why do you need to remodel a mains-powered screwdriver
In order for you to be able to use a screwdriver even in the most inaccessible places without unnecessary wires, at any time, the mobile screwdriver is converted to a network.
To carry out such a procedure is not so difficult as it seems at first glance. With the appropriate skills and all the necessary components, this process will take a little time.
It is difficult to remake a cordless screwdriver, so you can ask a professional for help
Methods for converting a cordless screwdriver into a network vary in complexity. One of them. powering the charging from a laptop practically does not require knowledge and skills. To mount a computer power supply, you need to know how to handle a soldering iron, and to repurpose a Chinese adapter, you need to know how to handle a measuring device. In addition, there are several other methods for converting a cordless screwdriver directly into a network.
Namely:
- Using a power supply device from a personal computer instead of a battery;
- Giving new life to the car battery;
- Using, as source, a power supply from halogen lamps;
- By connecting the Chinese 24V power supply board.
For brainy craftsmen, it is not difficult to perform such manipulations. If you are not confident in your abilities, then it is better not to risk it and seek the help of a knowledgeable specialist.
Converting a screwdriver to a network using laptop charging
In the event of a battery failure, a household screwdriver can be switched to mains power by making some changes to its design. This does not require a lot of expenditure of finance, time and effort. The positive nuances of this transformation are obvious: you do not need to constantly charge the battery, and at the same time, the forced downtime will go away. After all, the shortest duration for charging the device is more than 3 hours.
However, when deciding to perform such a transformation with your screwdriver, you should understand that from now on you will need an alternating current to work with it. You will no longer be able to use it away from communications.
If you need to connect the screwdriver to the network, you can use the charger from an old laptop. It has similar characteristics to a screwdriver, and it can be easily found in every home or workshop. But, nevertheless, check what output voltage is shown for your charging. In this case, chargers for 12-19V are suitable.
Using a laptop charger, you can convert a screwdriver to a network
Scheme of your actions:
- We take out unusable batteries from a failed battery pack.
- We take charge from the laptop.
- Cut off the connector and strip the wires from insulation.
- We solder the bare wires or wrap them with electrical tape.
- We make an outlet for the wire in the case.
- Assembling the structure.
This manipulation will allow you to use the screwdriver at any moment, and without stopping for charging.
- How to convert a battery device to a screwdriver from a 220 volt network
- Why do you need to remodel a mains-powered screwdriver
- Converting a screwdriver to a network using laptop charging
- Convenient screwdriver from the network: features of use
- How to make a screwdriver from the network
How to convert a battery device to a screwdriver from a 220 volt network
Today the screwdriver belongs to the devices that we very often use in everyday life. It is also irreplaceable in production. This device is suitable for a variety of electrical and construction work. With its help, furniture and other items are assembled, the design of which requires threaded connections.
The cordless screwdriver is compact and portable. But not everyone is happy with these advantages, because the device quickly runs out of battery, and you have to interrupt work halfway. Therefore, many owners of this tool are interested in the question of how you can convert a screwdriver with a battery to a network.
In order to convert the battery device to a cordless screwdriver, it is necessary to prepare materials and tools for work in advance.
The reason for this decision is also the fact that when the device is not used for a long time, the battery is discharged on its own, which leads to a breakdown of the screwdriver due to the destruction of some elements. It is impossible to repair a failed battery, and it is not always possible to purchase a new one. Often, component parts can only be purchased from the official representatives of the manufacturer. Accordingly, the cost of a new battery will be almost equal to the cost of a new screwdriver. Therefore, some craftsmen come to the decision to turn the screwdriver into a network.
Materials and tools required for this:
- Charger from this screwdriver;
- His native battery;
- Soft stranded electrical cable;
- Soldering iron and solder;
- Insulating tape;
- Acid.
First, you need to solder the loose ends of the cable to the terminals of the charger. You need to know that copper wires of a cable with brass contacts can only be soldered after they have been treated with acid. Experts recommend using special solder, but sometimes the simplest methods are used in the form of acid treatment.
How to make a screwdriver from the network
When the batteries stop working due to the fact that they have simply outlived their life, many begin to wonder how they can fix the situation and remake their old cordless screwdriver into the network with their own hands. After all, it is no longer possible to repair a battery with a destroyed element, and the cost of a new one is almost equal to the purchase of a new screwdriver. But zealous and skillful owners came up with a way out. to power the screwdriver from the mains. Some were even able to invent a device that works simultaneously from the mains and from the battery. But it’s better not to do it.
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Alteration of the electronic transformer
A good and fairly compact power supply can be made from the so-called electronic transformer (ET), designed to power low-voltage halogen lamps.
But in order to use the transformer in conjunction with a screwdriver, it (the unit) must be modified. Let’s take a look at the classical scheme of the simplest ET.
This is the simplest pulsed step-down power supply, assembled in a push-pull circuit. The output voltage is removed from the secondary winding of the output transformer. The circuit shown in the figure is, of course, not the only one. There are devices that are simpler, there are more complicated ones. Available with output voltage stabilization, soft start system and short circuit protection. But what interests us is an invariable part of any electronic transformer. So what’s the difficulty?
The problem is that the output voltage of such power supplies is variable with a frequency of tens of kilohertz, and even modulated with a frequency of 50 Hz. It is suitable for powering incandescent lamps, but not suitable for a screwdriver. Hence, it needs to be straightened and smoothed. To do this, we use the diode VD1 and two smoothing capacitors. C1 and C2, connecting them according to the diagram below.
The H1 lamp serves as a load lamp when the screwdriver is turned off. It is necessary to start the converter. without load, it simply will not start. A high-voltage electrolytic capacitor can be taken from a power supply unit for a computer or any other device, say, from a TV with a switching power supply. It is located in the housing of the electronic transformer. The diode and the capacitor are placed in the body of the instrument, and the lamp is installed so that it also illuminates the workplace. it killed, as they say, two birds with one stone. Such a lamp will be much more convenient than the standard illumination, which is turned on only with the instrument. Aim blindly in the dark, then start the screwdriver and look where you hit.
The KD2960 diode is a high-speed rectifier diode designed for a current of 20 A and withstanding a reverse voltage of 1200 V. Its foreign counterpart is 20ETS12. Replacing this diode with an ordinary rectifier will not work. it has too low a speed, and at a frequency of tens of kilohertz it will warm up more than it will straighten.
But there is a replacement. A Schottky diode is quite suitable, withstanding a current of 15-20 A and a reverse voltage of at least 25 V. You can find such diodes in PC power supplies. There they serve the same purpose. The diode, of course, needs to be put on the heat sink.
Miniature light bulb. It can be found in Soviet New Year’s garlands, or use two 6.3 V, connected in series. We assemble the rectifier, place it in the tool case, bring out the wires through the hole made, solder one part of the connector. The second is soldered to the wires from the transformer. and the revision is completed. Since the voltage at the output of the electronic transformer is variable, the polarity of connecting the wires from the ET to the rectifier can be disregarded.
As mentioned above, there are transformers that provide a smooth start for halogen lamps. Are they right for us? Quite. As soon as we connect the ET to the network, it will start and within 1–3 seconds it will enter the operating mode. this will be clearly noticeable by the smooth flashing of the H1 lamp. After that, the tool can be used without problems.
If the battery is faulty: how to make an adapter for a screwdriver?
There are two ways to make an adapter: use an old battery pack, because it already has a connector that fits a screwdriver, or connect the wires directly to the handle.
Car battery
The last option is an auto accumulator that can be connected to a screwdriver and used in places where it is impossible to get 220 volts. The disadvantage of such a device is that it will not work for a long time with a screwdriver, since the car power supply is quickly discharged. Therefore, if the standard UPS of the screwdriver refuses to function, which happens very often, then you should not rush to get rid of the device, it is enough to devote a few hours of time and the device will work even better than with a battery.
Benefits of cordless screwdrivers
Cordless screwdrivers are very convenient on the construction site. they are very easy to work with on the roof, in difficult conditions, where dragging wires will only get in the way and create unnecessary danger. But this is where the battery breaks down most often. the screwdriver fell, the battery broke, and you have to look for a new one.
Let’s figure out how to make a screwdriver from the network
Connecting the old battery pack
First you need to disassemble the battery pack, for this, unscrew the screws as shown in the figure.
Take out the used nickel-cadmium batteries.
Next, separate them from the connector pins.
Connecting wires directly
Connecting the wires directly to the screwdriver is done as follows:
To connect the wires directly, you first need to disassemble the screwdriver, that is, unscrew the bolts holding the two halves of the case.
Consider the connections, find the plus and minus, remember the polarity of the connection. For convenience, it was decided to remove the lower wide part of the handle.
Next, you need to connect the wires, this can be done with a soldering iron or good old electrical tape.
And the final touch is to wrap the wires at the exit of the handle for additional fixation and insulation.
Connect the wires
We disassemble the computer power supply case. We take out the board and unsolder the wires on the power cable. Instead of yellow and black wires, we solder wires with terminals from the battery to the wires leaving the power supply. Black wire. negative contact, yellow wire. positive.
You can increase the power that the power supply delivers by connecting the black wire to black and yellow to yellow. This will improve the performance of the screwdriver because losses will be reduced.
To start the computer power supply, you need to close the green wire from the 20-pin connector to the black one. This can be done directly on the PSU board. For convenience, you can connect a switch to the green and free black wires.
For ease of use, a special connector can be soldered to the wires, allowing them to be disconnected. The polarity must be observed, otherwise the screwdriver may be damaged. To do this, the connector must be with a key (a special protrusion on the case, which prevents it from being connected incorrectly).