Output voltage for Clippers Diode

[paipai90]

Hi All,

May I know how to calculate the output voltage for both of the circuit attached?

Need to use what formula?

Thanks.

 

[barry]

1) Assume the voltage at the output of the current source is V1, and the drop across the diode is 0.7V. Then:

V1/(2.2K)+(V1-0.7)/(1.2K)=10mA.

2) Assuming no load on the output and 0.7V diode drop:

[10-(Vo-0.7)]/1.2K=Vo/(4.7K) (same current flows in both Rs)

Is this enough to get you going?

 

[paipai90]

1) I get 8.218V but actual answer is 7.51V.

 

[godfreyl]

You calculated voltage at input instead of voltage at output.

 

[paipai90]

You calculated voltage at input instead of voltage at output.

hi, may I know the method to calculate output voltage?

 

[godfreyl]

There is only one component between the input and the output. What do you think the voltage drop across that component is? Barry already gave you the answer.