[AMPS] Re: High watt Zeners

[Roy Koeppe]

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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