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Registered Member #540
Joined: Mon Feb 19 2007, 07:49PM
Location: MIT
Posts: 969
At 24V the flyback hisses because of corona and I think the corona eventually broke the insulation down. Should I do anything about the other outputs? Does the large capacitor have any thing to do with the HV output?
Registered Member #95
Joined: Thu Feb 09 2006, 04:57PM
Location: Norway
Posts: 1308
Large capacitor in the ZVS driver or flyback? If your flyback doesn't put out don't despair, you can salvage the core and make a new flyback. Usually its enough to gorund ouputs that arc to each other.
Registered Member #540
Joined: Mon Feb 19 2007, 07:49PM
Location: MIT
Posts: 969
The flyback has the capacitor. It's the cilinder thing that sticks out on some flybacks. I don't think I have enough skills and matirials to make a flyback.
Registered Member #95
Joined: Thu Feb 09 2006, 04:57PM
Location: Norway
Posts: 1308
That capacitor is just a part of the internal recticfier. You'll be surprised by how easy it is to make your own flybacks, lots of the members here have done it. Here is a write up on it, in german, but babelfish does an ok job of translating.
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
The HV filtering capacitor has on many flybacks a separate ground connection, so it is also possible to get sparks between this connection and other pins. If the capacitor connection is grounded, the output will change from a silent hissing arc to a loud buzzing spark.
Registered Member #540
Joined: Mon Feb 19 2007, 07:49PM
Location: MIT
Posts: 969
If I were to make multiple layers what matirial should I use? (BTW thanks for all the help) How would I remove the core without breaking it? Are there any other parts that I can remove from a flyback?
Registered Member #95
Joined: Thu Feb 09 2006, 04:57PM
Location: Norway
Posts: 1308
Put some insulating epoxy over each layer + some HV tape. (can't remember what its called.) The yellow tape from ATX transformers works well, and so does the core. Make sure the insulation stretches well over the layers, as arcing between layers happens easily. Take the metal clamp off the flyback core, and then it should come out easily with some twisting and turning.
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ZVS Qs
