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Capacitor death & VHF parasitics



>----------
>From: 	Dale, Martin
>Sent: 	Tuesday, November 03, 1998 6:51PM
>To: 	'tesla-at-pupman.con'
>Subject: 	Capacitor death & VHF parasitics
>
>Hi all,
>       I've been reading with interest all the posts on the list about
>commercial capacitor failures in Tesla coil circuits.
>(Sorry to hear about your unwelcome pyrotechnics Chip!)
>
>Has anyone looked into the possibility of VHF or even UHF ring-ups causing
>the untimely death of TC circuit components?
>I know that Terry Fritz found some high current pulses in the 50MHz region.
>(Any comments Terry?)
>
>VHF parasitic resonance's are a well know curse of H.F Ham band amplifier
>constructors where circuit components can literally burn up without warning
>due to such ring-ups.
>Couldn't this also happen in TC circuits?
>This is of particular interest to me as I am trying develop an effective
>choke system to run on my coils that blocks all but the 50Hz H.T supply
>power!
>
>My main TC seems to put out a great deal of VHF radiation, possibly due to
>excess primary tank circuit connection inductance's?
>
>Anyone got any thoughts on this, and/or ideas on a "perfect H.T filter" for
>use on RSG driven coils etc? 
>
>                             Thanks,   Martin Dale, TCBON
>