Resistor Symbols
The resistors are elecrical passive components manufactured specifically to provide a given value of resistance to the passage of electric current. Its unit of measurement is the ohm and is represented by the greek letter omega.
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Resistor IEC system + Info |
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Resistor NEMA system |
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Impedance + Info |
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Resistor array e.g. 8 resistors |
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Shunt resistor with current and voltage connections |  |
Resistor with sockets of current | |
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Resistor with fixed sockets |  |
Nonreactive resistor | |
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Not burnable resistor |  |
Resistor nonreactive | |
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Protective resistor Makes the function of a fuse |
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Attenuator + Info |
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Protective resistor Makes the function of a fuse |
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Memristor Memory resistor + Info |
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Heating element + Info |
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Heating element | |
Symbols Variable & Adjustable Resistors |
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Variable resistor Rheostat / Potentiometer + Info |
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Variable resistor Rheostat / Potentiometer |
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Continuously variable resistor |  |
Stepwise variable resistor | |
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Stepwise variable resistor |  |
Potentiometer | |
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Adjustable resistor Pre-set rheostat + Info |
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Linear potentiometer Potentiometer with moving contact + Info |
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Adjustable resistor Pre-set rheostat |
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Potentiometer with moving contact and default settings | |
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Pre-set resistor |  |
resistor with moving contact and off position | |
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Variable resistor with carbon discs + Info |
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Symbols of Special Resistors |
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LDR - Photoresistor Light dependent resistor. By increasing the light intensity decreases resistance + Info |
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LDR - Photoresistor The width is the side exposed to light |
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LDR - Photoresistor NEMA system |
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LDR - Photoresistor | |
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NTC Resistor - Thermistor Negative temperature coefficient The resistance decreases with increasing temperature + Info |
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PTC Resistor - Thermistor Positive temperature coefficient The resistance increases with increasing temperature + Info |
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NTC Resistor - Thermistor NEMA system |
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VDR - Varistor The voltage-dependent resistor + Info |
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Thermistor + Info |
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VDR - Varistor | |
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VDR - Varistor The resistance decreases with increasing voltage |
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VDR - Varistor | |
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VDR - Varistor NEMA system |
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Magnetic resistor Its resistance depends on magnetic fields |
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RTD Resistance temperature detector |
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RTD Resistance temperature detector |
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Iron-hydrogen resistor / Barretter + Info |
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Picture gallery of resistorDownload symbols |
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