Extra Class

Which of the following semiconductor materials contains excess free electrons?

Why does a PN-junction diode not conduct current when reverse biased?

What is the name given to an impurity atom that adds holes to a semiconductor crystal structure?

How does DC input impedance at the gate of a field-effect transistor (FET) compare with that of a bipolar transistor?

What is the beta of a bipolar junction transistor?

Which of the following indicates that a silicon NPN junction transistor is biased on?

What is the term for the frequency at which the grounded-base current gain of a bipolar junction transistor has decreased to 0.7 of the gain obtainable at 1 kHz?

What is a depletion-mode field-effect transistor (FET)?

In Figure E6-1, which is the schematic symbol for an N-channel dual-gate MOSFET?

In Figure E6-1, which is the schematic symbol for a P-channel junction FET?

What is the purpose of connecting Zener diodes between a MOSFET gate and its source or drain?

What is the most useful characteristic of a Zener diode?

Which characteristic of a Schottky diode makes it a better choice than a silicon junction diode for use as a power supply rectifier?

What property of an LED's semiconductor material determines its forward voltage drop?

What type of semiconductor device is designed for use as a voltage-controlled capacitor?

What characteristic of a PIN diode makes it useful as an RF switch?

Which of the following is a common use of a Schottky diode?

What causes a junction diode to fail from excessive current?

Which of the following is a Schottky barrier diode?

What is a common use for point-contact diodes?