Zener Diode Q-Point Calculation

[lazyaditya]

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

 

[rude man]

Correct.

 

[lazyaditya]

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 !

 

[rude man]

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 !

It doesn't match option A?

 

[lazyaditya]

Answer given behind book is option (B)

 

[rude man]

Answer given behind book is option (B)

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

 

[lazyaditya]

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 ?

 

[rude man]

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 ?

These attachments are irrelevant to your zener problem.

 

[lazyaditya]

I am sorry i posted the wrong the image.

 

[NascentOxygen]

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.