# Zener diode problem

1. Sep 21, 2014

The Q-point for the Zener diode in the figure given is ?

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2. Sep 21, 2014

### rude man

Correct.

3. Sep 21, 2014

But sir my answer does no matches any option,and solution to this problem was given by making thevenin equivalent of the circuit across zener diode !

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4. Sep 21, 2014

### rude man

It doesn't match option A?

5. Sep 21, 2014

Answer given behind book is option (B)

6. Sep 21, 2014

### rude man

Book answer is wrong. If Vz = 4.9V the zener would be burned to a crisp! (internal R = 0).

7. Sep 22, 2014

I have attached the solution given behind the book, please tell me if the solution is valid and can i use it in other problems similar to this ?

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8. Sep 22, 2014

### rude man

These attachments are irrelevant to your zener problem.

9. Sep 22, 2014

I am sorry i posted the wrong the image.

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10. Sep 23, 2014

### Staff: Mentor

Both methods of analysis are valid, providing you draw the logical conclusion. Determining the Thévenin equivalent is fine, but you don't have to.

Answer (a) is correct. The zener voltage here must be 4 volts if it is conducting.