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Results 481 - 490 of 3952 in Forum
  • High Voltage | Plasma Speaker

    Posted by yoni on Tuesday 15 September 2009 - 10:55:14
    Is there anything else on the heatsink that could be shorting it out? I know many components have their cases electrically connected to something, so ...
  • High Voltage | Plasma Speaker

    Posted by yoni on Tuesday 15 September 2009 - 10:55:14
    Take your circuit to school, try it at the right voltage and take good photos of the circuit, the waveforms (at the primary, gate, tl494) and copy the...
  • High Voltage | Plasma Speaker

    Posted by yoni on Tuesday 15 September 2009 - 10:55:14
    ...
  • Projects | Another plasma speaker

    Posted by tobias on Thursday 21 May 2009 - 11:52:12
    Nice Richie! I will try it! I have a few MUR820 here. It should make it. Can you just give me a 'start' value for the cap? I'm running it at ...
  • Projects | Another plasma speaker

    Posted by tobias on Thursday 21 May 2009 - 11:52:12
    Yesterday I spent 2 hours on the lab messing with capacitor values for the snubber. I've got the desired waveform with a 0,01 uF 400 V cap, runn...
  • Projects | Another plasma speaker

    Posted by tobias on Thursday 21 May 2009 - 11:52:12
    Dr. Kilovolt May I ask why 21 kHz driving frequency? It's right after the audible range but I think you are not using that for audio modulation, ...
  • Projects | Another plasma speaker

    Posted by tobias on Thursday 21 May 2009 - 11:52:12
    Dr. Kilovolt May I ask why 21 kHz driving frequency? It's right after the audible range but I think you are not using that for audio modulatio...
  • Projects | Another plasma speaker

    Posted by tobias on Thursday 21 May 2009 - 11:52:12
    I'm not sure what snubber design you used...I just remember when I ran my snubber backwards, I had thicker arcs. The right way was thin and long. Bu...
  • Projects | Another plasma speaker

    Posted by tobias on Thursday 21 May 2009 - 11:52:12
    Snubber design is a complicated subject, so it is hard to advise on individual cases without knowing all of the numbers. Bare in mind that snubbe...
  • Projects | Another plasma speaker

    Posted by tobias on Thursday 21 May 2009 - 11:52:12
    In short the primary of the flyback transformer should be resonant at a frequency that is at least half that who's period is equal to the off-time of ...
 
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