[AMPS] Zener screen supplies

[Steve Thompson]

-----Original Message-----
From: Radio WC6W <wc6w@juno.com>
To: g8gsq@qsl.net <g8gsq@qsl.net>; amps@contesting.com <amps@contesting.com>
Date: 14 April 2001 17:42
Subject: Re: [AMPS] Zener screen supplies


>
>On Thu, 12 Apr 2001 09:13:55 +0100 "Steve Thompson" <g8gsq@qsl.net>
>writes:
>
>Hello Steve & the group,
>   I finally got a moment to read all this screen mail...
>
>   The original query was about how to protect a "string of zeners" shunt
>regulator.
>
>   One answer is with a SCR crowbar across the zeners, to which Ian
>mentioned  a reference (which I haven't seen) & then alluded to other
>circuitry.
>
>  Triggering may be simply implemented by connecting the gate of the
>crowbar SCR to a small value R in series with the bottom of the zener
>string.  So, in this case, the other circuitry is a single R.
That seems like a neat idea. KISS too.

Steve


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