Practice # 9 Semiconductors

Front

What does a half-wave rectifier allow current to pass through during each cycle?

Back

The positive alternation.

Front

What is the function of a rectifier?

Back

A rectifier transforms AC into DC by limiting or regulating the direction of current flow.

Front

What is a variable-capacitance diode commonly referred to as?

Back

Varactor.

Front

What is the schematic symbol for a zener diode?

Back

The schematic symbol for a zener diode is a specific representation used in circuit diagrams.

Front

What are Zener diodes also known as?

Back

Breakdown diodes.

Front

When do Zener diodes allow current to pass?

Back

When the circuit potential is equal to or in excess of the desired reverse bias voltage.

Front

What type of current does a half-wave rectifier convert?

Back

Alternating current (AC) to direct current (DC).

Front

What is the primary difference between a half-wave rectifier and a full-wave rectifier?

Back

A half-wave rectifier only uses one half of the AC cycle, while a full-wave rectifier uses both halves.

Front

What is the purpose of a diode in a circuit?

Back

To allow current to flow in one direction while blocking it in the opposite direction.

Front

What is the main characteristic of a varactor diode?

Back

Its capacitance varies with the applied reverse voltage.