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Hello Warren,
Capacitors that withstand high voltages with large capacity is more difficult to get, just like semiconductors that can withstand high voltages, starting at 1.6KV it is slowly getting more expensive even in the used market. laughing
I have now 10μF capacitors from old stock 3.15KV designed in continuous operation, which are 4x the size of the 1200V 15μF capacitors I have. The dielectric must be thicker here and the plate surface probably too. I would like to know if it makes a difference in resonance and Q-factor.
Sometimes I think that the modern capacitors are not the same as Hector with the huge old capacitors I've seen in some pictures.
Or I have already achieved everything and only too cowardly to charge my batteries directly via the diode plug to use the energy successfully.
About the new heavy very efficient Variac I have set the charging voltage of the diode plug stepless and I noticed that the power suddenly became negative. The pointer of the moving iron measuring device then went below 0 and the voltage on the batteries rose sharply, which I found very strange.
Nevertheless I would like to increase the Q-factor by higher impedance further and over the coupling capacitors to the diode plug side 2 suppressor diodes a 440V breakthrough voltage in series switch so that at 880 to max. 950V is shorted there if not enough energy is removed.
I noticed that the voltage drops due to larger discharge capacitors and does not even rise that much, so I wanted to lower the voltage in the extraction circuit a bit to protect the components so that I could work in the transverter with max. Can drive voltage of 1.5 kv.
regards
Sven