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Electronic Symbols
Symbol Component name Symbol Component name
Wire Symbols
electrical wire symbol Electrical Wire connected wires symbolunconnected wires symbol Wires crossing but not joined
wire junction Wire junction multiple wire junction Multiple wire junction
joined wires Multiple wire junction terminal Test Point
test point Terminal chassis ground Chassis Ground
earth ground Earth Ground
Power Supply Symbols
voltage source symbol Voltage Source current source symbol Current Source
ac power source symbol AC Voltage Source battery cell symbol Battery Cell
battery symbol Battery controlled voltage source symbol Controlled Voltage Source
controlled current source symbol Controlled Current Source
Switch and Relay Symbols
SPST switch symbol SPST Toggle Switch SPDT switch symbol SPDT Toggle Switch
normally closed symbol Switch SPST normally closed normally open symbol Switch SPST normally open
dip switch symbol DIP Switch spst relay symbol SPST Relay
spdt relay symbol SPDT Relay jumper symbol Jumper
solder bridge symbol Solder Bridge
Lamp / Light Bulb Symbols
lamp symbol Lamp / light bulb lamp symbol Lamp / light bulb
lamp symbol Lamp / light bulb
Diode / LED Symbols
diode symbol Diode zener diode Zener Diode
schottky diode symbol Schottky Diode varicap diode symbol Varactor / Varicap Diode
tunnel diode symbol Tunnel Diode led symbol Light Emitting Diode (LED)
photodiode symbol Photodiode
Resistor Symbols
resistor symbol Resistor (IEEE) resistor symbol Resistor (IEC)
potentiomemer symbol Potentiometer (IEEE) potentiometer symbol Potentiometer (IEC)
variable resistor symbol Variable Resistor / Rheostat (IEEE) variable resistor symbol Variable Resistor / Rheostat (IEC)
Trimmer Resistor Thermistor
Photoresistor / Light dependent resistor (LDR)
Capacitor Symbols
capacitor symbol Capacitor Capacitor
polarized capacitor symbol Polarized Capacitor polarized capacitor symbol Polarized Capacitor
variable capacitor symbol Variable Capacitor
Meter Symbols
voltmeter symbol Voltmeter ammeter symbol Ammeter
ohmmeter symbol Ohmmeter wattmeter symbol Wattmeter
Misc. Symbols
motor symbol Motor transformer symbol Transformer
fuse symbol Fuse fuse symbol Fuse
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