Explain the working of a half wave diode rectifier.

 

In the forward bias characteristic curve, a diode appears as:

The input values $\mathrm{A}$ and $\mathrm{B}$ of the Boolean expression $\left(\overline{\mathrm{A}+\mathrm{B}}\right)\left(\overline{\mathrm{A}·\mathrm{B}}\right)=1$ are respectively:

The chromium ions doped in the ruby rod:

In an N-type semiconductor, there are:

State the conditions required to achieve laser action.

Prove the Boolean identity: $\left(\mathrm{A}+\mathrm{B}\right)\left(\mathrm{A}+\mathrm{C}\right)=\mathrm{A}+\mathrm{BC}$

What are the advantages of negative feedback amplifier?

State De-Morgan's theorems.