DIY

Pocket Switching Converter with 12V 220V Low Power

Pocket switching converter with 12 to 220V low power Hello to all homemade guys !!! In this article, I want to tell you in detail how to make a simple, step-up, switching converter, spending a minimum of parts and time. Sometimes there are cases, especially if you went fishing or hunting, deciding to spend the night in a hunting lodge or in a house on the shore of a lake and where of course there is no electricity. This article will help you fix this. To create it, we need the following details:
Pocket switching converter with 12 to 220V low power 1). Transistor KT805BM
2). Film capacitor for 2 uF
3). 0.1uF film capacitor
4). 4.7k resistor
5). Line filter choke from TV (6). Copper wire 0.3mm
7). Copper wire 0.1mm
8). Textolite 3 х 5 cm.
one). Transistor KT805IM and its pinout.
 Pocket pulse converter with 12 to 220V low power Pocket pulse converter with 12 to 220V low power 2 ). Film capacitor 2uF 250v
Pocket pulse converter with 12 to 220V low power 3). Film capacitor 0.1 uF 250v
Pocket switching converter with 12 to 220V low power 4). 4.7 kΩ 0.25 W resistor
Pocket pulse converter with 12 to 220V low power 5 ). Line filter choke measuring 20 x 16 x 6 mm.
 Pocket pulse converter with 12 to 220V low power You can get a color image from a burnt-out TV, as well as from a DVD switching power supply.
It will need to be rewound. In order not to break the ferrite core, it must be heated and then the halves will easily come unstuck. Do not try to disconnect it with a knife or other objects, as well as with a blow, in which case you will simply destroy it, since ferrite is very fragile. If everything worked out for you, then we proceed to winding, the primary winding has 10 turns, 0.3 mm wires with a tap from the middle. The secondary winding contains 160 turns of 0.1 mm wire. I wound 50 turns each and then 3 layers of insulation with tape, so as not to “flash” the winding, since the current will be high-frequency. After winding, I used construction varnish to glue the ferrite halves and insulate the last winding.
6). A piece of textolite measuring 3 x 5 cm.
Pocket pulse converter with 12 to 220V low power For For drilling the PCB, I use an electric motor taken from an old, disc car radio. Powered by a 12 volt 2 Amp power supply. The shaft at the end is sharpened for a triangular screwdriver for better drilling.
Pocket pulse converter with 12 to 220V low power And so, let's start assembling. To begin with, we drill 4 holes for the throttle legs. We will do this from the edge, then to solder the wires for the exit. And with the legs of the primary winding towards the board itself. Installing the throttle.
Pocket pulse converter with 12 to 220V low power Now next to the throttle legs we make 2 holes for a 2 uF capacitor. Installing the capacitor.
Pocket pulse converter from 12 to 220V low power The next step is to set the capacitor to 0.1 uF. The designations can be different, such as: 100n, 100 nl, 104. We drill two holes, one near the connection of the 2 uF capacitor and the end of the primary winding, the second on the side where the transistor will be. We also drill a hole for the middle output of the choke in front of the capacitor. After that we drill two more to install the resistor.
Pocket pulse converter with 12 to 220V low power Install resistor, one side to the middle terminal, at the end of work this connection will be “+” of the power supply to the circuit, with the reverse side towards the transistor and solder it to the second terminal of the 0.1 uF capacitor. This connection will be soldered to the base of the transistor.
Pocket switching converter with 12 to 220V low power Now we make three holes for installing the transistor, so that the base leg is in the side of the resistor and capacitor connection, under the manifold, I drilled a little in front for convenience. We put the transistor in its place.
Pocket switching converter with 12 to 220V low power Install the transistor on the heatsink, because when working with a load, it can overheat and fail. I installed a small heatsink.
Pocket pulse converter with 12 to 220V low power Now we turn the circuit over and connect all the leads, for this I use a tinned wire. We connect the base with a resistor and the second terminal of the 0.1 uF capacitor. We connect the first terminal to the end of the primary winding and to the terminal of the 2 uF capacitor. We connect the collector of the transistor to the beginning of the primary winding and to the second leg of the 2 uF capacitor. The middle tap of the primary winding is soldered to the resistor and the positive wire. Solder the “minus” of the power supply to the emitter.
Pocket pulse converter with 12 to 220V low power As you can see in the photo, the converter turned out to be compact , small-sized.
Pocket switching converter with 12 to 220V low power Let's test it, I will power it from a 12 V, 2 A. I will take an energy-saving lamp for 220 V, 16 W. We connect.
Pocket switching converter with 12 to 220V low power As you can see on the readings of the multimeter, the power supply is 12 V.
Pocket pulse converter with 12 to 220V low power Everything works great, the transistor can handle such a load.
Pocket pulse converter with 12 to 220V low power  Pocket pulse converter with 12 to 220V low power Thank you all and happy repetition !!! And may there always be LIGHT in your house along with homemade !!!

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