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WorksheetsSemiconductor Power Devices
Total questions: 10
Worksheet time: 2hrs 47mins
Choose controllable power switches in these following list:
BJTs
Diodes
MOSFETs
Thyristors
Select the functions of a driver circuit in power electronics?
Amplify a control signal generated by a control circuit.
Generate a control signal to initiate a power switch operation.
Protect the control circuit from damage.
The interface between a control circuit and a power switch.
A semiconductor power device can conduct current when it is in forward-biased condition.
True
False
Heat sinks can be used to dissipate heat produced by the forward conduction power losses.
True
False
A Schottky diode conducts high current during _____ with _____ reverse recovery time.
forward-biased; short
forward-biased; very short
reverse-biased; short
reverse-biased; very short
This power switch exhibits _______ current gain with _________ gate current.
high, low
low, high
high, high
low, low
Choose the correct answer.
A
B
C
D
BJTs and IGBTs generate low on-state conduction power losses.
True
False
At the same on-state voltage value, IGBTs can conduct ______ current than MOSFETs with ______ switching time.
higher; higher
lower; higher
higher; lower
lower; lower
Selection of suitable power switches in any application depends on _____ and ______.
on-state voltage
operating frequency
power capacity
power losses
