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January 27th 04, 02:37 AM
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Situation: Radio Shack wall transformer with 11 VDC unregulated output is going into an LM371. I want to shunt with a pair of 5.1 V , 1A Zeners in series so that my adjustable output voltage is repeatable. Presently my Zener series resistor is 180 ohms. Problem.. I'm frying my zeners!! What should I be doing differently? Are you sure the zeners are in the correct polarity ? Also I have not looked at the way zeners are speced lately but aren't they specified as Watts instead of Amps ? |
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