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Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
Camel wrote ...
I wound the transformer myself, so yes I have identified it correctly :) I could see sparks arcing in the secondary coil. Also that was the only time I heard it make a wine.
If you saw sparks inside the secondary, then I guess its fried!
--- 1.6uF is way too high, my circuit ran best with ~0.33uF. Try less capacitance, the FETs will be cooler, but mainly, replace your secondary
Registered Member #834
Joined: Tue Jun 12 2007, 10:57PM
Location: Brazil
Posts: 644
Your secondary coil does not have any insulation. It will fail with a few hundreds of volts at most. A high-voltage flyback transformer requires extreme care with the insulation of the secondary coil. The mosfets in this circuit get hot. A good heat sink is necessary. I don't see a high-voltage rectifier, that would be used to charge a capacitor bank.
Registered Member #1807
Joined: Tue Nov 11 2008, 07:36AM
Location: San Luis Obispo, California
Posts: 19
Sulaiman has a good point about constant-current chargers for a cap bank. Nevertheless, the Mazzilli can act as a decent capacitor charger. Check out this thread under Projects: http://4hv.org/e107_plugins/forum/forum_viewtopic.php?67924
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Mazzilli ZVS flyback circuit
