Semiconductors Lesson 2
The output in the circuit is ? .
6.7V
The current in the circuit is ? .
8.9mA
Which circuit will produce the output waveform in the illustration?
A
Which illustration represents a diode forward biased in series with a limiting resistor?
A
Which illustration represents a diode reverse biased in series with a limiting resistor?
B
The anode and cathode are reversed on this diode.
False
When testing a diode with a digital multimeter (function switch set to Diode Test position, the red lead connected to the anode and the black lead connected to the cathode), what should be the expected reading?
The barrier voltage (0.7 V for a silicon diode or 0.3 V for a germanium diode)
A silicon diode typically has a mark (a solid line) on one end of the diode that identifies the cathode lead.
True
The depletion region collapses because the positive terminal of the battery repels the holes on the P-type side and the negative terminal of the battery repels the electrons on the N-type side.
True
The illustration represents a diode and switch that allows the lamp to burn at either near half or full intensity when the ON/OFF switch is closed.
True
The illustration shows a diode connected to a meter to prevent reverse current flow through the meter.
True
Based on the characteristic curve, what is the reverse breakdown voltage of the diode?
300V
Which of the following is a failure mode of a silicon or germanium diode?
B(Open failure mode)C(Short failure mode)
The layer that forms between the P and N material in a PN junction is called the ? .
B(depletion layer) or C(depletion region)
Which illustration represents two silicon diodes used to protect the meter from excessive currents?
C
What can be done to limit the buildup of static charges in an enclosed area?
Control the humidity
A ? is a two-terminal device that passes current of one polarity and blocks current of the opposite polarity.
Diode
What should an employee wear to prevent static charges from accumulating in sensitive work areas?
ESD wrist and heel strap
? is the sudden, rapid, momentary movement of charges from one object to another.
Electrostatic discharge (ESD)
The P-type material makes up the cathode of the diode, and the N-type makes up the anode of the diode.
False
The diode can be used to change direct current to alternating current.
False
To conduct current, the diode must be reverse biased.
False
If the diode is reversed biased, the depletion region between the two materials will ? .
Increase
The maximum recurrent (or reverse) voltage the diode is rated to withstand is called ? .
Peak Inverse Voltage (PIV)
When the anode of a diode is connected to ? , the diode is reverse biased.
the negative terminal of a power source
