Electronics

Questions:

1. Describe the first, second and third approximations for a diode.

0. What are the diode’s terminals labeled as.

0. Show a diagram for a full wave bridge rectifier.

Problems:

1. For the circuit shown,  R = 30Ω,   the power supply is set to 5v.

Use the second approximation for the diode.

         Calculate the circuit current, the diode and resistor voltage and power.

    

0. The input winding has 1000 turns,  winding #1 has 200 turns, winding #2 has 100 turns, winding #3 has 2000 turns.

If the input voltage, Ein is set at 250v, calculate the three secondary voltages.

0. For a line frequency of 60Hz, what is the ripple voltage if the load current is 250mA and the capacitor is 500uF?