Tesla coil on one transistor or Brovin kacher

I present to your attention a very small Tesla coil on one transistor or Brovin Kacher. In a Tesla coil, a very high high-frequency alternating voltage is supplied to the primary winding, and in a kacher, the primary winding is fed by the collector current of the transistor, it was Brovin who found out that with such a generator circuit, a high voltage appears on the collector and discovered a new way to control the transistor and called this device Kacher, which means swing reactivity. The Kacher is a high-frequency high-voltage generator, as a result of which the so-called corona discharge can be seen at the terminal. Also, a fairly strong electromagnetic field appears around it, which can affect radios, mobile phones, especially touchscreens and other electronics. Therefore, in a close-up photo of a working caster, stripes are noticeable. It was with this device that Tesla tried to transmit energy over a distance; whether he succeeded is unknown. Now there is no other use as a toy. So, let's get started, first we need to look at the circuit, it is very simple and can be soldered in 10 minutes.

I modified it a little, instead of a choke, a 12 V DC source and electric. A capacitor with a capacity of at least 1000 microfarads, the larger the better.

The transistor must be installed on a fairly large heatsink, otherwise it starts to heat up

Then comes the most routine and tedious task, the L2 coil needs to be wound with a very thin wire of about 0.01 mm or a little thicker, but the thinner it is, the greater the effect

you need to wind it on a marker or something similar, but it must be a plastic cylinder, carefully turn to turn in one layer; if you wind it intermittently, coat it with glue, otherwise everything will go down the drain.

We glue the marker onto the stand; a regular disc is perfect for this.

then we twist the primary winding L1 2-5 turns with a very large cross-section wire of the order of 2-4 mm, for convenience it is better to take a frame diameter, which should be almost twice the size of the marker

It is better to run the lower tap from the marker, which goes to the base of the transistor, under the disk so that it does not touch the secondary winding.

If everything is done correctly, then the circuit should work immediately, it is better to check with a fluorescent lamp; if there is no glow, swap the ends of the secondary winding (thick wire) or check whether it touches the marker.

And so this is what you can do with a ready-made camera

If you bring a gas-discharge lamp to the kacher, it begins to glow

The same effect is observed with other similar lamps

Also in an ordinary incandescent lamp you can see the so-called glow discharge, it looks like a plasma ball, it looks very beautiful

You can simply touch something metal, the discharge is almost unnoticeable, due to the size of the camera

If you make a larger model, you can make an ion engine, but this won’t work here.

The result is a simple and fairly cheap toy.

The most expensive were

1.Transistor 30 RUR

2. Radiator 20 RUR

The rest was already in stock, but I think everything in total will not cost even 150 rubles.