How To Make A Screwdriver Directly From The Network

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.

  1. Wires are attached to the contacts of the charging unit of the screwdriver. Spoiled nutrients are removed from the nest.
  2. 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.
  3. Since the nest has lost its weight after the removal of unusable elements, it is recommended to restore the balance by inserting some load into the vacated space, otherwise the hand will get very tired during work, eventually harming the health of joints and ligaments.
  4. The cable and the previously attached wires are connected together, the body is assembled.

How to make the screwdriver work from the mains. DIY screwdriver alteration

Power check

A screwdriver connected to a 90 watt transformer easily handles screwing in large self-tapping screws and drilling any material. After watching this, it becomes clear that finding a power source for a screwdriver whose battery has become unusable is not problematic. Finding a computer unit is not difficult. An even more convenient option is a laptop block for 6 or more amperes. It is advisable to find a device with a current of more than 10 volts, since 6-volt from time to time will go to protection.

Consider the option with a remote power supply

Using a power supply from a personal computer.
On the radio market for a small cost, you can buy an old power supply from a personal computer. We need a version of the AT format, which had to be turned off with the key after exiting the operating system.

Experienced users remember such system blocks. The advantage of such a PSU is also that it indicates an honest power. If it says 300W, it means you can safely remove 15-16 amperes from the 12-volt output (again referring to Ohm’s law). This is enough to power an average screwdriver.

How To Make A Screwdriver Directly From The Network

Such blocks have a power button in the kit. Another advantage is the presence of a cooling fan and an advanced overload protection system. If you will hide the power supply in a beautiful case, do not forget to leave a hole for ventilation.

The connection is very simple. Black wire (-), yellow wire (12V).

Limitations. A screwdriver with a supply voltage higher than 14 volts will not work.

Using a car battery charger.
The principle is the same as with a computer power supply. You need to purchase an old charger for the starter batteries. The modern fashion for compact impulse chargers has left analog linear devices with manual control of voltage and charge current behind board. Therefore, such a device can be purchased on the automotive market for a symbolic cost.

It’s good if the voltage can be adjusted smoothly. In this case, your makeshift power supply will fit any screwdriver. Converting it to a power tool is reduced to connecting the input of the electric motor to the power terminals of the charger.

READ  Hitachi Screwdriver Remaking On Li Ion

Making a homemade power supply.
If you are familiar with the principles of building electrical circuits, you can make your own power supply. Scheme giving general concepts. In the illustration.

The transformer can be picked up from an old tube TV, or other household appliances. Power for 220 volts 250-350W. The main thing is the power supply. The donor should not be pulsed.

The voltage on the secondary winding is 24-30 volts. The secondary winding is made from a wire of the corresponding section. However, if the output winding current is at least 15 amperes (see transformer specification), there is nothing to worry about. After losses on the diode bridge (1-1.5 V on the diode), you will get the required output value.

If you have an electrical engineering education, make the calculation yourself. Or in a practical way: by connecting a 220 volt 100W incandescent lamp as a load, measure the output voltage. If it exceeds the needs of the screwdriver, reduce the number of turns of the secondary winding of the transformer.

On our own

For users with special knowledge and skills, there will be no difficult problem “is it possible to power a screwdriver from a charger without special means”, because assembly of the feeding block is possible with your own hands. Instead of damaged elements, a power module assembled according to the scheme is inserted into the case. The outgoing voltage is monitored, the wires are powered, the case is locked.

Tip: the circuit may require additional load, it can be ensured by including a 15W light bulb in the system, which will also provide backlight.

Do-it-yourself conversion of a cordless screwdriver into a network

The third option is to convert the cordless screwdriver for mains operation. You will need knowledge of electronics and circuitry, so this is not for everyone. In addition, you will need to know the operating parameters of your battery.

If the battery is broken, then you can ask people on the DIY forums to measure the parameters of the current and voltage of the battery. This will help you make the mains power supply. Basically, if you have a good knowledge of electronics, you can simply disassemble the battery. In its design, there will be chemical batteries connected in a certain way. Knowing their type, from the name of the battery, as well as the connection diagram, you can quickly estimate the parameters of the battery. And then assemble the rectifier with the required operating parameters. Or even replace the cells in a failed battery. And then you don’t have to assemble the rectifier.

How to make a screwdriver from the network

The mains screwdriver is the dream of many DIYers. In principle, it happens that in a home workshop there is no need for a cordless tool. You can have access to the outlet at any time. Of course, it’s convenient to have a cordless screwdriver in your hands. But when you work, you hold in your hands, in addition to the tool itself, also a battery. And it will be harder.

Also, batteries often break, break. And since on sale you are unlikely to buy a battery separately from a screwdriver, you will have to puzzle over how you can provide your screwdriver with the necessary power from the outlet, bypassing battery devices.

Benefits of cordless screwdrivers

Cordless screwdrivers are very convenient on the construction site. It is very easy to work with them 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 it out, how to make a screwdriver from the network.

Just a network screwdriver

A more expensive screwdriver is a specialized network. Such a tool has a built-in gearbox, most often of the planetary type.

They are positioned as a professional tool and cost significantly more.

Replacing a screwdriver with a conventional drill

The easiest option is to use an ordinary small drill as a screwdriver. You just take the bit and clamp it into the chuck instead of the drill. Working with a drill as a screwdriver will require some skill. The fact is that the drill does not have a “ratchet”. In a screwdriver, the ratchet will work as a safety catch when the fasteners are tightened. Therefore, you need to clearly feel this moment and release the button. Otherwise, torn off heads of screws, spoiled bits and mood are guaranteed to you. Another difference between a drill and a screwdriver is the rotation speed.

READ  How To Use A Drill Screwdriver

If the torque in the drill is small and the rotational speed is high, then in the screwdriver it is the other way around. Some even have the ability to adjust the rotation speed. Without high torque, tightening a large self-tapping screw is unlikely to work. You will have to resort to using a screwdriver. Therefore, small screws are usually screwed in with a drill.

It is not recommended to use a hammer drill as a screwdriver, although its operating parameters of torque and rotation are more acceptable. The hammer drill has a large radial runout, with its help it is difficult to tighten the screws.

On the topic of repair and alteration of batteries

This is about reworking the battery type:

This is about the conversion to the network model:

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.

  1. Wires are attached to the contacts of the charging unit of the screwdriver. Spoiled nutrients are removed from the nest.
  2. 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.
  3. Since the nest has lost its weight after removing the unusable elements, it is recommended to restore the balance by inserting a load into the vacated space, otherwise the hand will get very tired during work, eventually harming the health of the joints and ligaments.
  4. The cable and the previously attached wires are connected together, the body is assembled.

A computer module will work too

Another solution to the problem of powering a screwdriver. Mounting it to a computer power supply. This option is applicable to those modules that are equipped with a mechanical trigger. The positive aspect is that the unit is cooled by a cooler and is protected from excessive load by the built-in special system.

Such an assembly is arranged only using power modules for 300-350 W and a current of 12 volts, not less than 16 A. For instruments with a voltage of more than 14 volts, this power supply option does not work.

The user may want to hide an unaesthetic unit in a beautiful case, then it is recommended not to forget to arrange ventilation in it.

Other ways to supply power. Is it possible to connect the screwdriver directly to the charger

The screwdriver is convenient for its ubiquity. Independence from boundary wires makes it possible to wade into hard-to-reach areas. A set of two power modules allows you to power one of them while working with the other. However, each battery pack has a finite number of charge / discharge periods, failing when they are used up. In low-cost tools, blocks break faster, and the user gets a gadget with a working motor, but no power. Then the dilemma arises “is it possible to connect the screwdriver directly to the charger”.

You can feed such a screwdriver by connecting it to the network through a power supply unit, because its motor operates at 220 volts.

On our own

For users with special knowledge and skills, there will be no difficult problem “is it possible to power a screwdriver from a charger without special means”, because assembly of the feeding block is possible with your own hands. Instead of damaged elements, a power module assembled according to the scheme is inserted into the case. The outgoing voltage is monitored, the wires are powered, the case is locked.

READ  Bosch Pbh 2100 Re Rotary Hammer Review

Tip: the circuit may require additional load, it can be ensured by including a 15W light bulb in the system, which will also provide backlight.

Car charger

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 instrument motor input channels to the car charger contacts.

Using an external power supply

The external power supply device has larger dimensions than the built-in one, but in any case, if you power the screwdriver from the mains, the tool will be “tied” with a wire to the outlet.

The current coming from the power supply reaches 10-15A, so the cable cross-section must be at least 1mm².

Assembling a serviceable battery from two that have lost capacity

From two defective devices, one can be assembled, suitable for operation.

Important! By connecting the power supply unit to the case of the defective battery, the second repaired one will provide mobility when performing small amounts of work.

Conversion of a screwdriver to mains power

A screwdriver is a tool designed for driving screws and drilling small holes. There are mains, powered by 220V and rechargeable, with two replaceable batteries.

If the battery in such devices fails, then there are three options:

  • Replacing the battery is expensive, in a budget class device the price of a set approaches the cost of a new device;
  • Repair is not always possible, and in some cases its cost is comparable to the cost of new batteries;
  • Conversion of a cordless screwdriver to a network.

This article tells about how to power a screwdriver from a 220v network, or how to make a network out of a cordless screwdriver.

How to make a homemade power supply

In addition to the purchased one, you can make the power supply yourself. This requires a 160W transformer, such as were installed in tube TVs.

First of all, you need to determine the required number of turns. The procedure is as follows:

  • Disassemble the transformer;
  • Unwind all secondary windings from the coil;
  • Wind 10 turns of wire;
  • Assemble the transformer;
  • Connect to a 220V network;
  • Measure the voltage on the secondary winding;
  • Divide the number of turns (in this case 10) by the measured voltage.

The resulting value is multiplied by the supply voltage of the screwdriver and the required number of turns is obtained.

Attention! The number of turns per volt can be obtained by measuring the voltage and counting the turns in the secondary winding.

The lowering winding is wound with a wire with a cross section of 1mm² to reduce the voltage drop in the transformer.

There is an alternating voltage at the output of the transformer, but the device needs a constant one, therefore, a diode bridge is installed in addition to the transformer. It is assembled from diodes on radiators with a voltage of more than 20V and a current of 10A. It is mounted together with a transformer or in a battery case from which the elements are removed.

Car battery charger

The requirements for this device are the same as when using the computer unit.

If so, it is advisable to use a device with a built-in voltmeter and voltage regulation. In some models, a current-limiting resistance is installed inside. It must be short-circuited.

Finding faulty items

The storage battery is assembled from individual cells. They do not fail at the same time, but even one defective element degrades the performance of the entire battery.

To determine the parts that have lost their capacity, you must:

  • Charge the battery;
  • Work until power loss;
  • Disassemble the battery;
  • Measure the voltage on each element separately.

Batteries with noticeably less voltage or no voltage at all must be replaced.