Ionophon - singing arc

Now I will tell you about how to make an “Ionophone” with my own hands or how it was also called “singing arc”. Actually by the names you can already guess that the ionophone is the source of sound. The sound in this device comes from a burning arc, the timbre of the sound varies with the frequency of voltage generation. In the 50s of the last century, these devices have found practical application, but now there are many more effective alternatives to this device and have forgotten about it, and we can assemble it only as a toy for interesting experiments.
Well, let's start with the scheme.
The basis of this scheme is the NE555 integral timer familiar to many (purchased for 10 rubles). In our scheme it serves as a generator of rectangular pulses that are converted by a field-effect transistor (MOSFET), I used the IRFS630, it is desirable to use the polecats for high current (drain-source) of the order of 100A In this case, you can achieve a better effect. Perfectly suitable IRL3803. Here is the pinout for the first transistor.
Now let's move on to the assembly itself. Here is the whole set of details that we will need:
Let's start with a line writer (hereinafter FA), you need to get TVS without multipliers, regulators.
TVS from the old ch.b. TV will be the best option, the more high-voltage winding, the greater the effect volume. Here is the one that I used, perhaps the worst option.
The primary winding is wound with a thick wire of 1-2 mm 10 turns. In this way.
Now it remains to solder the radio parts, the arc should appear immediately after the assembly, if there is no arc, then try to twist R4 or check the correctness of the assembly, if there is no sound, try connecting the audio input in series through a 100 pF capacitor.
Also, the transistor must be installed on a large radiator and, if possible, install a fan.
I soldered all the mounted installation and that's what happened in the end
It turned out to be 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 balloons, it can also serve as a converter for powering the engine, 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 is worth touching on safety. The output of the transformer is very high voltage. It may not be a fatal defeat, but you will surely get a tangible electric shock and a significant burn, so you should not experiment. Also, the arc has a high temperature and can cause a fire.
Good luck to repeat!

Related news