Hi, guys.
Aaron, thank you for your explanations and for the schematic. I need to study it more.
At this moment I tryed to avoid using inverters, variacs, bulbs. My oscilator is protected by being stopped when the cap fires. Works fine with no fuses or bulbs, but I must improve the discharge part.
Jetijs, I have had allmost the same experience as you with the sparks and gap length. At 1-3mm gap, plasma occurs. Bigger gap: no plasma, sound like the ignition coil fires, but no spark at all. If diodes string removed (disconnected from HV),I have nice, long, bright, regular spark, but nothing more. Maybe diodes leak somehow. Anyway, they have a little leak current (few tens of uA), and this could be the problem.
The diodes could seem fine being measured at low voltages, but could cease at higher voltages... Harder to test this...
Note that a 1mm air gap needs 1KV to be jumped.
gotoluc, I will try to use new diodes for tests, and will also try to add a second MOSFET to discharge the second cap (with LV). Let's hope it will work.
YouTube - mini plasma de 3mm. Here is what I have gained so far. If the paper were darker, the flash would be more visible... Sorry. The discharge is half CDI (4.7uF cap) and half plasma (another 4.7uF).
Gibs, could you post a little schematic?
gmeast, nice flash sparks!
All the best for all!
Aaron, thank you for your explanations and for the schematic. I need to study it more.
At this moment I tryed to avoid using inverters, variacs, bulbs. My oscilator is protected by being stopped when the cap fires. Works fine with no fuses or bulbs, but I must improve the discharge part.
Jetijs, I have had allmost the same experience as you with the sparks and gap length. At 1-3mm gap, plasma occurs. Bigger gap: no plasma, sound like the ignition coil fires, but no spark at all. If diodes string removed (disconnected from HV),I have nice, long, bright, regular spark, but nothing more. Maybe diodes leak somehow. Anyway, they have a little leak current (few tens of uA), and this could be the problem.
The diodes could seem fine being measured at low voltages, but could cease at higher voltages... Harder to test this...
Note that a 1mm air gap needs 1KV to be jumped.
gotoluc, I will try to use new diodes for tests, and will also try to add a second MOSFET to discharge the second cap (with LV). Let's hope it will work.
YouTube - mini plasma de 3mm. Here is what I have gained so far. If the paper were darker, the flash would be more visible... Sorry. The discharge is half CDI (4.7uF cap) and half plasma (another 4.7uF).
Gibs, could you post a little schematic?
gmeast, nice flash sparks!
All the best for all!
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