Vacuum tube tesla coil (VTTC) using Russian GI-30


Posted on Feb 6, 2014

A nice and compact setup, that works off-line, directly at 220V, with only a voltage doubler to get the plate voltage up to 560V DC. I don`t need to go into details explaining this circuit, it is a simple Armstrong oscillator, using the feedback coil L4. Here is a great tutorial detailing all the basic knowledge and know-hows behind a VTTC. My goal was a compact design. I`ve used a 220V ATX PC Supply connector


Vacuum tube tesla coil (VTTC) using Russian GI-30
Click here to download the full size of the above Circuit.

, a switch to power the tube, and another one to select the filament voltage (under-nominal and the nominal 12. 6V values). Careful, the voltage must be 12. 6V with the tube connected! I then tried various combination of secondaries and primaries coils, with variable number of turns or coil diameter, and adjusted the capacitors to get the best spark, RF emission, and power level. This took some time, but it was an important step in the construction of this VTTC: It can be seen the last coil is a winner. Also it is more compact than the other 2, perfect for my setup. I had to wind it manually and this also took time, but at least I could use it successfully. For the final setup I had to move the electrolytic capacitors, and cover them with another piece of wood to make some space for the coil and oscillator and feedback caps, on the same base. Got this nicely done:




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Over-Temperature Switch
Flashing Brake Light Circuit
cut the feed forward in the miller compensation with voltage buffer
Simple Analog to Digital Converter (ADC)
Switching (transformerless) DC/AC 12V/230V 150W modified sine wave inverter
Broadcast circuits
rf remote control encoder and decoder
DIY Li ion battery charger w adjustable shut off current
electronic toggle switch no1
Voltage Regulator Using Zener Diode Circuit
led lights using analog flip flop circuit diagram
Pre mic audio amplifier with ic LM386
Hybrid power amplifier 01



Top