Re: PIRANHA-III Trigger Circuit (fwd)

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Original poster: Gerry Reynolds <greynolds@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Fri, 22 Dec 2006 09:04:52 -0700
From: resonance <resonance@xxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: PIRANHA-III Trigger Circuit (fwd)




Terry  or Steve  ---- do you have a Digi-Key parts list for this circuit?


Dr. Resonance


>>
>>Recently you mentioned you were going to try triggering your SIDAC-IGBT
>>stack with an ignition coil.  I came across an interesting and simple
>>variable rate trigger circuit for a strobe light which also uses a SIDAC!
>>It might work well for your trigger - see
>>http://geocities.com/lgtngstk/Strobe/Strobe.html.  Just substitute the
>>ignition coil for the trigger transformer.  Of course, eliminate the flash
>>tube & R1, and you will probably want to increase C3 to pump more energy
>>into the ignition coil and correspondingly decrease R3 and R2 to get the
>>break rate range you want.
>
> This is similar to the DF-DRSSTC pulse firing circuit I used on the
> DF-DRSSTC (upper right):
>
> http://hot-streamer.com/temp/DF-DRSSTC-SCHEMATIC.pdf
>
> Your circuit is pretty nice and easy and should work fine ;-))
>
>
>>Also, an ignition coil without a common
>>primary/secondary connection would be safer, or run the trigger from an
>>isolation transformer.
>
> I was going to use two ignition coils for total isolation since everything
> in the primary circuit is very hot!
>
> Cheers,
>
>         Terry
>
>
>
>>Merry Christmas,
>>--Steve Young
>
>
>
>