Question

A waveform shown when applied to the following circuit will produce which of the following output waveforms. Assume ideal diode configuration and $R_1=R_2$

• A.
• B.
• C.
• D.

Answer 1

Answer: (D)

The $P-N$ junction will conduct only when it is forward biased i.e. when $-5V$ is fed to it, so it will conduct only for third quarter part of signal shown and when it conducts potential drop $5V$ will be across both the resistors, so output voltage across $R_2$ is $2.5V$ .
$\therefore {\text{V}}_0=-2.5\text{V}$