ELECTRONICS HOMEWORK

ELEC 161 QUIZ 4

All the questions carry same weight

1. Calculate the dc voltage across a 1-KΩ load for an RC filter section where (R = 220 Ω, C = 10 µF). The dc voltage across the initial filter capacitor is dcV = 40 Volts. Show your calculations.

2. For a transformer output of 18V and a filter capacitor of 220 µF, calculate the minimum input voltage when connected to a load drawing 300 mA. Show your calculations. 3. A full-wave rectifier operating from a 60 Hz supply drives a capacitor-filter circuit (C = 100 µF), which develops 10 dcV when connected to a 2 KΩ load. Calculate the output voltage ripple. Show your calculations. 4. Explain how a tunnel diode works. What are the differences between a semiconductor pn junction diode and a tunnel diode?