How to make a power supply for a screwdriver 18B with your own hands?

To operate the screwdriver you need a power supply unit at 18 V. These devices operate from 220 V. The main element of the units is the converter. To date, there are many modifications that differ in parameters and constructive elements. How to make a power supply to a screwdriver 18B with your own hands? For this it is recommended to consider specific assembly schemes.

Models with indication

The power supply to the screwdriver 18V for operation from the network with indications can be made on the basis of a wired converter. The conductivity of the element must be 4.5 m. Capacitors are used at 5 pF. Most specialists resistors are installed with single-pole rectifiers. To stabilize the conversion process, comparators are used.

Universal Blocks

Make a universal power supply to a screwdriver 18B with your own hands is quite simple. First of all, it is recommended to prepare the output capacitor at 5 pF. Additionally, one resistor is required. Converters for blocks are applied in a negative direction. They can be used in a DC circuit and are well suited for a 220 V network. Experts recommend that comparators be installed with beam adapters. They are well resistant to impulse noise. It should also be noted that the filters for the capacitor are selected with an electrode trigger. At the end of the operation, the unit is checked for resistance. When properly assembled, the modification should not exceed 40 ohms.

A circuit with a bipolar resistor

How to make a power supply for a 18V screwdriver to work from the network? Devices with a bipolar resistor can be assembled on the basis of a transient controller. The converter is used as standard with a filter. The resistance of the element should not exceed 40 ohms.

It should also be noted that when assembling the unit, only channel filters are used, which are installed next to the converter. When closing the circuit, the lining is checked first. Triggers are used to increase the device overload parameter.

Device with 3-pole resistor

Modification with a bipolar resistor can be combined on the basis of an operational converter. As a rule, modifications are applied to 220 V. At the beginning of the assembly, a trigger is selected. Filters for it are installed in the channel type. It should also be noted that the conductivity of the resistor in the block should not exceed 4.5 microns. The resistance at the output of the converter is on average 40 ohms. These modifications are good in that they are not afraid of impulse noise from 220 V. It is additionally important to remember that devices can be used with screwdrivers of different brands. If we consider blocks on wire comparators, then rectifiers are used only on two plates. Additionally, the conductivity of the comparator itself is taken into account.

Pulse modifications

The impulse power supply for the screwdriver 18B with its own hands is assembled with integral converters. Comparators for devices are used on two or three plates. Most models are made with low-impedance rectifiers. The overload indicator of elements starts from 10 A.

Some modifications are added to the channel filters. Also, among the self-made modifications, there are often models on drive converters. They have a high conductivity index. For them, only 4 pF capacitors are suitable. In this case, filters are used with beam adapters. Experts say that the models are able to work with screwdrivers at 18 V.

Block diagram with amplifier

Modifications with amplifiers are common. To assemble the power supply for a screwdriver 18B with your own hands, you can use a wired converter. A contactor trigger is also required. Begin the installation should be from the soldering of transistors. They are used in different capacities, and the conductivity of the elements starts from 4.5 microns. Most experts recommend filters to use the channel type. They are good at dealing with impulse noise. Also it should be noted that one adapter for the converter is required for the assembly. Directly the rectifier is installed on two plates. At the end of the test, the resistance on the block is tested. The specified parameter averages 45 ohms.

Devices on a zener diode

On the zener diode, the power supply for the 18V screwdriver is assembled with contact converters. Rectifiers are allowed to be used with electrode adapters. In this case, the conductivity must be no more than 5.5 microns. Controllers are often found on three plates.

Filters for them are suitable for the channel type. Also there are assemblies with a simple inverter converter. They are allocated with a stable frequency, but can not be used in an alternating current network. At the output of the converter an insulator is installed. A comparator for modification will be required with a duplex filter.

Single-filter model

How to make the power supply unit on a screwdriver 18B yourself? It is quite easy to assemble a model with one filter. To begin work it is necessary with selection of the qualitative converter. Next, to make a power supply for a screwdriver 18B with your own hands, a trigger is established for three contacts. The filter is mounted behind the converter. The stabilizer is suitable only for a low-resistance type, and its reducibility should not exceed 4.5 microns. After installing the filter, the resistance at the unit is immediately checked. The specified parameter averages 55 ohms. The triodes for the device are of the unidirectional type.

Modifications without stabilizers

There are many self-made devices without stabilizers. Conductivity in blocks of this type is about 4.4 microns. Converters in this case are subject to pulsed loads from the 220 V network. Also it must be remembered that the devices are strongly overloaded from wave interference. If we consider modifications on dipole flip-flops, then they have only one adapter. In addition, it should be noted that the filter is installed behind the converter. The cover under it is soldered at the outlet. Experts say that a thyristor can use low conductivity. However, the resistance in the circuit should not drop below 45 ohms.

If we consider devices on wire capacitors, then capacitors of 3.3 pF are chosen for the models. They are installed only with channel filters, and the conductivity of blocks of this type is approximately 50 ohms. In order to independently assemble devices, contact rectifiers are used on diodes. The coefficient of conductivity in them is on the average 5.5 microns.