Resistor Symbols

The resistors are 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.

Symbology of Resistor

Symbol Description Symbol Description
Resistor symbol, IEC system Resistor
IEC system
  Resistor symbol, NEMA system Resistor
NEMA system
Impedance symbol Impedance   Heating element symbol Heating element
Symbol of the shunt resistor connections with current and voltage Shunt resistor connections with current and voltage   Resistor with sockets of current symbol Resistor with sockets of current
Resistor with connects fixed symbol Resistor with connects fixed   Nonreactive resistance symbol Nonreactive resistance
Not burnable resistor symbol Not burnable resistor   Resistor nonreactive symbol Resistor nonreactive
Protective resistor symbol Protective resistor
Makes the function of fuse
  Attenuator symbol Attenuator
Protective resistor symbol Protective resistor
Makes the function of fuse
  Memristor symbol Memristor
Memory resistor
Resistor array symbol Resistor array
e.g. 8 resistors
     

Symbols Variable & Adjustable Resistors

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Variable resistor symbol, Rheostat Variable resistor
Rheostat
  Variable resistor symbol, Rheostat Variable resistor
Rheostat
Continuously variable resistor symbol Continuously variable resistor   Stepwise variable resistor symbol Stepwise variable resistor
Stepwise variable resistor symbol Stepwise variable resistor   Potentiometer symbol Potentiometer
Adjustable resistor symbol Adjustable resistor
Pre-set rheostat
  Potentiometer with moving contact symbol Potentiometer with moving contact
Adjustable resistor symbol Adjustable resistor
Pre-set rheostat
  Symbol of the potentiometer with moving contact and default settings Potentiometer with moving contact and default settings
Preset resistor symbol Pre-set resistor   Symbol of the resistor with moving contact and off position resistor with moving contact and off position
variable resistor with discs carbon symbol Variable resistor with discs carbon      

Symbols of Special Resistors

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LDR - Photoresistor symbol LDR - Photoresistor
Light dependent resistor. By increasing the light intensity decreases resistance
  LDR - Photoresistor symbol LDR - Photoresistor, The width is the side exposed to light
LDR - Photoresistor symbol LDR - Photoresistor
NEMA system
  LDR - Photoresistor symbol LDR - Photoresistor
NTC Resistor - Thermistor symbol NTC Resistor - Thermistor
Negative temperature coefficient
The resistance decreases with increasing temperature
  NTC Resistor - Thermistor symbol PTC Resistor - Thermistor
Positive temperature coefficient
The resistance increases with increasing temperature
NTC Resistor - Thermistor symbol NTC Resistor - Thermistor
NEMA system
  VDR - Varistor symbol VDR - Varistor
The voltage-dependent resistor
Thermistor symbol Thermistor   VDR - Varistor symbol VDR - Varistor
VDR - Varistor symbol VDR - Varistor
The low resistance with increasing voltage
  Barretter symbol Barretter
VDR - Varistor symbol VDR - Varistor
NEMA system
  Magnetic resistor symbol Magnetic resistor
Their resistor depends on magnetic fields
Resistance thermometer, RTD symbol RTD
Resistance temperature detector
  Resistance thermometer, RTD symbol RTD
Resistance temperature detector
Picture gallery of resistor
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