Answer to Question #130409 in Electric Circuits for abdul hassan

Question #130409
An unloaded zener regulator has a
source voltage of 24 V, a series resistance of
470 V, and a zener voltage of 15 V. What is the
zener current?
1
Expert's answer
2020-08-24T12:24:22-0400

If zener voltage is 15 V, then the resistor voltage is U=2415=9V.U=24-15=9V. The zener and the resistor are connected in series, so their currents are equal. The resistor current: I=U/R=9/4700.02A=20mAI=U/R=9/470\approx0.02 A=20mA. So, the zener current is also 20 mA.


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