Explain the formation of depletion layer and potential barrier in p-n junction. Draw the circuit diagram of a half wave rectifier and explain its working.

Draw the circuit diagram of a full wave rectifier. Explain its working showing its input and output waveforms.

Draw a circuit diagram of a full-wave rectifier. Explain its working principle. Draw the input/output wave forms indicating clearly the function of the two diode used.

Draw the circuit diagram of half wave rectifier, showing input and output voltages.

Draw the circuit diagram of transistor as an oscillator and explain its working.

(a) In the given 'S' is a semiconductor. Would you increase or decrease the value of R to keep the reading of the ammeter A constant when S is heated ? Give reason for your answer. (b) Draw the circuit diagram of a photodiode and explain its working. Draw its 1-V characteristics.

(a) Define the terms deplection layer and barrier potintial for a p-n jucntion (i) an increase in the doping concentration and (ii) biasing across the junction affect the width of the depletion layer (b) Draw the cirucit diagram of a p-n diode used a s a half wave rectifier explain its working