Is a voltage regulator possible without a Zener diode? - Quora
Zener Diode - Wikipedia, The Free Encyclopedia | PDF | P–N Junction | Diode
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Zener diode - Wikipedia
Electronics Curiosities - What is Zener diode and its working? A Zener diode is a silicon semiconductor device that permits current to flow in either a forward or reverse direction. The diode
Why do we use zener diode in a level detector? - Quora