Ionophone - a singing arc

Now I will tell you about how to make the “Ionophone” with my own hands or how it was also called the “singing arc”. Actually from the names it is already possible to guess that the ionophone is a sound source. The sound in this device comes from a burning arc, the timbre of sound changes with a change in the frequency of voltage generation. In the 50s of the last century, these devices found practical application, now there are many more effective alternatives to this device and they forgot about it, and we can assemble it only as a toy for interesting experiments. Well, let's start with the diagram.

The basis of this circuit is the familiar NE555 integral timer (bought for 10 rubles). In our circuit, it serves as a rectangular pulse generator that is converted by a field effect transistor (MOSFET), I used IRFS630, it is desirable to use high voltage field-effect (drain-source) poles of about 100A in In this case, you can achieve a better effect. Perfect for IRL3803. Here is the pinout for the first transistor.

Now let's move on to the assembly itself. Here is the whole set of parts that we need:

Let's start with the line (hereinafter referred to as fuel assemblies) it is necessary to get fuel assemblies without multipliers, regulators. FA from the old b / w TV will be the best option, the larger the high-voltage winding, the greater the effect, volume. Here is the one that I used, perhaps the worst option.

We wind the primary winding with a thick wire 1-2mm 10 turns. In this way.

Now it remains to solder the radio components, the arc should appear immediately after assembly, if there is no arc, then try to turn R4 or check the correct assembly, if there is no sound try connecting the audio input in series through a 100 pcf capacitor. Also, the transistor must be installed on a large radiator and, if possible, install a fan.

I soldered everything with a hinged installation and that's what happened in the end

The result was a simple, uncomplicated, but rather interesting device.

In addition to the fact that this device was conceived as an ionophone, it can be used to power home-made plasma balls, it can also serve as a converter for powering LDS, and just for starting arcs. You can also connect a high voltage multiplier and get a spark discharge of about 3-4 cm (The multiplier is life threatening!)

Now it’s worth touching safety. The output of the transformer is very high voltage. It may not be a fatal defeat, but you will probably get a significant electric shock and a significant burn, so do not experiment. The arc also has a high temperature and can cause a fire.

Wishing to repeat good luck!

PS Video with a demonstration: