SCR power supply (fwd)

From: 	bmack[SMTP:bmack-at-FRONTIERNET-dot-net]
Sent: 	Tuesday, January 20, 1998 9:29 PM
To: 	Tesla List
Subject: 	Re: SCR power supply (fwd)

Nice thought, but SCR's are way too slow for an RF application.

> ---------- Forwarded message ----------
> Date: Sat, 17 Jan 98 22:25:48 PST
> From: Al Syme <asyme-at-idcomm-dot-com>
> To: Tesla list <tesla-at-pupman-dot-com>
> Subject: SCR power supply
> To All
> A while back I ran across a book on induction furnaces. In the book was a
> short discussion on using SCR's in a circut like a multivibrator  to
> provide power for an induction furnace. The book was vague about the
> circuitry involved but it did allude to a circuit that (1) provided back
> EMF to shut off the SCR and (2) provide a trigger pulse to fire the SCR
> the oppsite polarity. I don't know what the upper frequency limit for tis
> type of circut is, but I'm thinking that it may be a way of generating
> power at high enough frequency to make it cost effictive for us coilers
> a budget. If any of you have run across this application, any information
> would be helpful.....Thanx               Al Syme   KG0QJ