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[AMPS] Re: High watt Zeners

To: <amps@contesting.com>
Subject: [AMPS] Re: High watt Zeners
From: royanjoy@ncn.net (Roy Koeppe)
Date: Mon, 22 Mar 1999 09:01:55 -0600
Just in case y'all haven't heard about "piggy-back" zener circuits, these
incorporate a small wattage (1-watt) zener "riding" on a good, big, cheap
old power transistor. I have been using this concept for 20 years now with
not a single failure. The circuit consists of only three components, a small
resistor, a small zener and a big, fat  old transistor. Polarity is chosen
by PNP or NPN or by isolation.

73,    K6XK


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