Appendix D: Commonly Used Electrical Symbols
Connected
Unconnected
Wire
Wire
SPST Switch
Push Button
Diode
LED
Light Bulb
Buzzer
E
B
B
C
PNP
NPN
AND
NAND
Commonly Used Electrical Symbols
Ground
SPDT Switch
Photodiode
Motor
C
S
G
D
E
P-Channel
MOSFET
OR
NOR
DC Supply
AC Supply
Resistor
Potentiometer
Non Polarized
Polarized
Capacitor
Capacitor
Fuse
Inductor
D
G
G
S
N-Channel
P-Channel
MOSFET
XOR
Apx D
Battery
Basic
Amplifer
Operational
Amplifer
Transformer
S
G
D
N-Channel
JFET
JFET
NXOR
NOT
D
S
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