Semiconductor Switch Flashcards
1
Q
Mechanical switch disadvantages
Name one
A
Contact Bounce
Arcing
Get Dirty
Slow to operate
2
Q
Semiconductor switch disadvantages
Name one
A
Leakage current in off state
Voltage drop over Emitter and collector
Consume power
Generate RFI
3
Q
Explain Semiconductor switch
A
Cutoff = <0.6 v
Saturation (on) IB = IC/HFE
4
Q
BJT ON
A
VBE +0.7v
5
Q
BJT OFF
A
VBE <0.7v
6
Q
JFET ON
A
VGS = 0v
7
Q
JFET OFF
A
VGSoff = VP
8
Q
D Mode MOSFET ON
A
VGS = 0v
9
Q
D Mode MOSFET OFF
A
VGSoff = VP
10
Q
E Mode MOSFET ON
A
VGSon or VGSth
11
Q
E Mode MOSFET OFF
A
VGS = 0v
