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zener diode calculation

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altimatevignesh

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In a regulated power supply, two similar 15v zener diodes are connected in series. the input voltage is 45v dc. if each szener has a maximum current rating of 300ma, what should be the value of series resistance?

hello sir i just want this answer with model calculation
 

Well you have 15V to drop across the resistor at 300mA so R=15/0.3 = 50 ohms minimum.

Keith
 

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