- #1
nothing909
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Homework Statement
The Attempt at a Solution
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So basically, as the question says, you need to calculate the current in the zener and load when the supply voltage is 10V and then again when it's 15V.
FOR 10V SUPPLY
Voltage across resistor = 10-5 = 5v
Supply current = 5/1000 = 5mA
Voltage across load = 5V as Zener and load are in parallel
Current through load = 5/1000 = 5mA
Current through Zener = Supply current – Load current = 5 – 5 = 0
FOR 15V SUPPLY
Voltage across resistor = 15-5 = 10v
Supply current = 10/1000 = 10mA
Voltage across load = 5V as Zener and load are in parallel
Current through load = 5/1000 = 5mA
Current through Zener = Supply current – Load current = 10 – 5 = 5 mA
This doesn't look correct. I've never did a question with zener diodes before and I'm confused. What is it I'm doing wrong?