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Amazon.com: Solarhome 12V 4305872 Solenoid Valve Coil 2-Spade Connector Zener Diode for HydraForce Valve Stem Series 08 80 88 98 : Industrial & Scientific
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Relay Coil Suppression with single Zener Diode across BJT - Electrical Engineering general discussion - Eng-Tips
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relay - Why do designers use a series diode and zener for coil suppression rather than just a zener? - Electrical Engineering Stack Exchange
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What is the purpose of the Zener diode in this relay coil circuit? - Electrical Engineering Stack Exchange
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Zener diode characteristics|experiment|Forward bias|reverse bias|tamil| zenerdiode|experiment tamil| - YouTube
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