Choosing Resistor and NPN Transistor for 5.1V 5W Zener Diode with 9V 600mAh Supply

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#1 21675929 19 May 2016 11:47

Fobio Design Fobio Design

Anonymous

Post #1
21675929 19 May 2016 11:47

Hello-

Hope you are all having a wonderful day so far.

I am looking to use a zener diode in my circuit (5.1V & 5W). My supply voltage is a 9V 600mAH battery.

My question is what type of resistor and NPN transistor I would need to use in my circuit before the zener diode?

Thank you!
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#2 21675930 19 May 2016 21:04

Kevin Angelo Ma Kevin Angelo Ma

Anonymous

Post #2
21675930 19 May 2016 21:04

Hi,

What circuit are you doing? There is little information about the circuit and what is the zener diode used for.
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