A 12 V zener diode has r.=52, minimum current Izmin=5 mA, a current of 20 mA at 12 V. The maximum power dissipation P = 600 mW at room temperature. The supply voltage is 20V±2V. The load draws a constant current I₁= 15 mA. Find the following: Zmax Vs= 20 V±10% a) V zo b) Maximum current Izmax' Examine the circuit and answer the following c) Output voltage Vo at Izmin' RS

Electric Motor Control
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Chapter59: Motor Startup And Troubleshooting Basics
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Problem 12SQ: How is a solid-state diode tested? Explain.
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Zmin
A 12 V zener diode has r.=52, minimum current I -5 mA, a current of 20 mA at 12 V.
The maximum power dissipation P = 600 mW at room temperature. The supply voltage is
20V±2V The load draws a constant current I₁= 15 mA Find the following:
Zmax
Vs= 20 V±10%
1| R$
a) V.
20
b) Maximum current Izmax'
Examine the circuit and answer the following
c) Output voltage Vo at Izmin'
d) Resuch that minimum current flows through zener diode,
Anser the following assuming R, is disconnected
e) Current I, when Vs=22V,
f)AV due to AVs=±2V,
g) Line regulation
|FM|
-oVo
15 mA
R₁
Transcribed Image Text:Zmin A 12 V zener diode has r.=52, minimum current I -5 mA, a current of 20 mA at 12 V. The maximum power dissipation P = 600 mW at room temperature. The supply voltage is 20V±2V The load draws a constant current I₁= 15 mA Find the following: Zmax Vs= 20 V±10% 1| R$ a) V. 20 b) Maximum current Izmax' Examine the circuit and answer the following c) Output voltage Vo at Izmin' d) Resuch that minimum current flows through zener diode, Anser the following assuming R, is disconnected e) Current I, when Vs=22V, f)AV due to AVs=±2V, g) Line regulation |FM| -oVo 15 mA R₁
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