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Results 2271 - 2280 of 2632 in Forum

  • High Voltage | Self-oscillating halfbridge flyback driver

    Posted by Marko on Saturday 10 March 2007 - 20:03:33
    ...t is easy to get into oscillation. I used a small toroid from CFL bulb and wound two turns for base windings and one feedback turn. It made a nice sma...

  • High Voltage | Self-oscillating halfbridge flyback driver

    Posted by Marko on Saturday 10 March 2007 - 20:03:33
    ...omething wrong. I switched back to my little toroid transformer and diac circuit, and it works all fine now up to 30W or so with ATX transformer....

  • Tesla Coils | solid state versus nst and mots newbie

    Posted by jameselectric on Tuesday 06 March 2007 - 02:34:00
    ... directly to pin 2 of the ucc's. Then the ferite toroid for the gate drive transformer is fairly cheap, they can be attained for like 1 dollar in a p...

  • Tesla Coils | Tuning and spark length

    Posted by IamSmooth on Monday 05 March 2007 - 00:52:43
    ...indy night. I see sparks start flying off of the toroid when my input voltage hits 70v. If there was no wind I guess they would be bigger. I am also...

  • Tesla Coils | Secondary racing arcs

    Posted by IamSmooth on Sunday 04 March 2007 - 01:20:35
    ...secondary coil? Would more varnish help? Larger toroid. I haven't had these problems yet but I want to be prepared after I read on someone's ...

  • Tesla Coils | first light for a NST powered 3.5" TC

    Posted by sparky on Saturday 03 March 2007 - 21:25:08
    I put several more turns on the primary and increased the size of the toroid... and the spark length increase by 15" ---- WOW impressive!!

  • Tesla Coils | Toroids

    Posted by IamSmooth on Monday 26 February 2007 - 13:35:30
    ...tio for the primary and secondary diameters for a toroid? I know that they affect the capacitance, but one can design two toroids with different D1 a...

  • Tesla Coils | Toroids

    Posted by IamSmooth on Monday 26 February 2007 - 13:35:30
    There are two parameters you can independently vary when designing a toroid. 1. Capacitance (overall dimensions) 2. Max. Voltage (determined...

  • Sale and Trade | Toroids

    Posted by IamSmooth on Monday 26 February 2007 - 02:33:47
    I've established contact with someone who is planning on having O.W. Landergren, Inc spin some toroids. He is looking for either a 5x24" toroid or a ...

  • Sale and Trade | Toroids

    Posted by IamSmooth on Monday 26 February 2007 - 02:33:47
    ...om O.W. Landergren. There probably aren't enough toroid-needing people here on 4hv at any one moment to get your price down far enough. You may want...
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