[Amps] Russian HV Supply Capacitors

[peter chadwick]

I agree with Carl here. I had a string of 220mFd 500 volt electrolytics meant for photoflash work: even in a choke input filter, they didn't last very long before squirting stuff out of the vent holes. The Sprague 36D computer grade electrolytics I replaced them with lasted for years, and have only been taken out of service because there's an Acom 1500 due to arrive on Monday!

Capacitors meant for SCR commutation are another matter - they are designed for continuous high currents

73

Peter G3RZP


========================================
 Message Received: Jan 10 2014, 02:33 AM
 From: "Carl" <km1h at jeremy.mv.com>
 To: "MU 4CX250B" <4cx250b at miamioh.edu>, "Bill Turner" <dezrat1242 at wildblue.net>, amps at contesting.com
 Cc: 
 Subject: Re: [Amps] Russian HV Supply Capacitors
 
 I still wouldnt use any laser discharge caps in an amp PS; they are pulse 
 rated and do not handle current very well. There have been numerous reports 
 of US caps going back to the 80's that literally exploded when run at full 
 voltage. Derated to about 50% they were OK at least in a 1200W amp PS.
 
 Carl
 KM1H