Diodes and Transistors

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When the rms output voltage of a bridge full wave rectifier is 20 V, the peak inverse voltage across the diodes is (neglecting the diode drop)

The depletion region in a Junction Diode contains

In a bipolar transistor, the _____________compares closest to the control grid of a triode vacuum tube.

Compared to bipolar transistors, field effect transistors are NOT normally characterized by:

If a low level signal is placed at the input to a transistor, a higher level of signal is produced at the output lead. This effect is know as:

Bipolar transistors usually have:

Pinch-off voltage VP for an FET is the drain voltage at which

A varactor diode exhibits

A transistor in common emitter mode has

One important application for diodes is recovering information from transmitted signals. This is referred to as:

Which configuration has unity voltage gain (ideal)

In order for a diode to conduct, it must be:

For operation as an amplifier, the base of a npn transistor must be

A certain power supply filter produces an output with a ripple of 100 mV peak-to-peak and a dc value of 20 V. The ripple factor is

The total secondary voltage in a center-tapped full-wave rectifier is 125 rms. Neglecting the diode drop, the rms output voltage is

Avalanche breakdown results basically due to

If the load resistance of a capacitor-filtered full-wave rectifier is reduced, the ripple voltage

For a certain 12 V zener diode, a 10 mA change in zener current produces a 0.1 V change in zener voltage. The zener impedance for this current ranges is

What semiconductor device glows red, yellow, or green, depending upon its chemical composition?

The varactor diode is usually


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