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Symbols of Electronic Components

Electronics Components Symbols
Schematic / Circuits

Ammeter Symbol Ammeter

Amplifier general Amplifier general

Amplifier, inverting Amplifier, inverting

Amplifier, operational Amplifier, operational

AND gate AND gate

Antenna, balancedAntenna, balanced

Antenna, generalAntenna, general

Antenna, loopAntenna, loop

Antenna, loop, multiturnAntenna, loop, multiturn

Battery SymbolBattery

Capacitor, feedthroughCapacitor, feedthrough

Capacitor, fixedCapacitor, fixed

Capacitor, variableCapacitor, variable

Capacitor, Variable, Split RotorCapacitor, variable, split-rotor

Capacitor, Variable Split Stator Capacitor, variable, split-stator

Cathode, electron-tube, cold Cathode, electron-tube, cold

Cathode, electron-tube, directly heatedCathode, electron-tube, directly heated

Cathode, electron-tube indirectly heatedCathode, electron-tube indirectly heated

Cavity resonator Cavity resonator

Cell, electrochemical Cell, electrochemical

Circuit breaker Circuit breaker

Coaxial cable Coaxial cable

Crystal, piezoelectric Crystal, piezoelectric

Delay line Delay line

Diac Diac

Diode, field-effect Diode, field-effect

Diode, general Diode, general

Diode, Gunn Diode, Gunn

Diode, light-emitting Diode, light-emitting

Diode, photosensitive Diode, photosensitive

Diode, PIN Diode, PIN

Diode, Schottky Diode, Schottky

Diode, tunnel Diode, tunnel

Diode, varactor Diode, varactor

Diode, zener Diode, zener

Directional coupler Directional coupler

Directional wattmeter Directional wattmeter

Exclusive-OR gate Exclusive-OR gate

Female contact, general Female contact, general

Ferrite bead Ferrite bead

Filament, electron-tube Filament, electron-tube

Fuse Fuse

Galvanometer Galvanometer

Grid, electron-tube Grid, electron-tube

Ground, chassis Ground, chassis

Ground, earth Ground, earth

Headset Headset

Handset, double Handset, double

Headset, single Headset, single

Headset, stereo Headset, stereo

Inductor, air core Inductor, air core

Inductor, air core, bifilar Inductor, air core, bifilar

Inductor, air core, tapped Inductor, air core, tapped

Inductor, air core, variable Inductor, air core, variable

Inductor, iron core Inductor, iron core

Inductor, iron core, bifilar Inductor, iron core, bifilar

Inductor, iron core, tapped Inductor, iron core, tapped

Inductor iron core, variable Inductor iron core, variable

Inductor, powdered-iron core Inductor, powdered-iron core

Inductor, powdered-iron core, bifilar Inductor, powdered-iron core, bifilar

Inductor, powdered-iron core, tappedInductor, powdered-iron core, tapped

Inductor, powdered-iron core, variable or Inductor, powdered-iron core, variable Inductor, powdered-iron core, variable

Integrated circuit, general Integrated circuit, general

Jack, coaxial or phono Jack, coaxial or phono

Jack, phone, two-conductor Jack, phone, two-conductor

Jack, phone, three-conductor Jack, phone, three-conductor

Key, telegraph Key, telegraph

Lamp, incandescent Lamp, incandescent

Lamp, neon Lamp, neon

Male contact, general Male contact, general

Meter, general Meter, general

Microammeter Microammeter

Microphone Microphone

Microphone, directional Microphone, directional

Milliammeter Milliammeter

NAND gate NAND gate

Negative voltage connection Negative voltage connection

NOR gate NOR gate

NOT gate NOT gate

Optoisolator Optoisolator

OR gate OR gate

Outlet, two-wire, nonpolarized Outlet, two-wire, nonpolarized

Outlet, two-wire, polarized Outlet, two-wire, polarized

Outlet, three-wire Outlet, three-wire

Outlet, 234-V Outlet, 234-V

Plate, electron-tube Plate, electron-tube

Plug, two-wire, nonpolarized Plug, two-wire, nonpolarized

Plug, two-wire, polarized Plug, two-wire, polarized

Plug, three-wire Plug, three-wire

Plug, 234-V Plug, 234-V

Plug, coaxial or phono Plug, coaxial or phono

Plug, phone, two-conductor Plug, phone, two-conductor

Plug, phone, three-conductor Plug, phone, three-conductor

Positive voltage connection Positive voltage connection

Potentiometer Potentiometer

Probe, radio-frequencyor Probe, radio-frequency Probe, radio-frequency

Rectifier, gas-filled Rectifier, gas-filled

Rectifier, high-vacuum Rectifier, high-vacuum

Rectifier, semiconductor Rectifier, semiconductor

Rectifier, silicon-controlled Rectifier, silicon-controlled

Relay, double-pole, double throw Relay, double-pole, double-throw

Relay, double-pole, single-throw Relay, double-pole, single-throw

Relay, single-pole, double-throw Relay, single-pole, double-throw

Relay, single-pole, single-throw Relay, single-pole, single-throw

Resistor, fixed Resistor, fixed

Resistor, preset Resistor, preset

Resistor, tapped Resistor, tapped

Resonator Resonator

Rheostat Rheostat

Saturable reactor Saturable reactor

Signal generator Signal generator

Solar battery Solar battery

Solar cell Solar cell

Source, constant-current Source, constant-current

Source, constant-voltage Source, constant-voltage

Speaker Symbol Speaker

Switch, double-pole, double throw Switch, double-pole, double-trow

Switch, double-pole, rotary Switch, double-pole, rotary

Switch, double-pole, single throw Switch, double-pole, single-throw

Switch, momentary-contact Switch, momentary-contact

Switch, silicon-controlled Switch, silicon-controlled

Switch, single-pole, rotary Switch, single-pole, rotary

Switch, single-pole, double throw Switch, single-pole, double-throw

Switch, single-pole, single-throw Switch, single-pole, single-throw

Terminals, general, balanced Terminals, general, balanced

Terminals, general, unbalanced Terminals, general, unbalanced

Test point Test point

Thermocouple or Thermocouple

Transformer, air core Transformer, air core

Transformer, air core, step down Transformer, air core,  step-down

Transformer, air core, step-up Transformer, air core, step-up

Transformer, air core, tapped primary Transformer, air core, tapped primary

Transformer, air core, tapped secondary Transformer, air core, tapped secondary

Transformer, iron core Transformer, iron core

Transformer, iron core, step down Transformer, iron core, step-down

Transformer, iron core, step-up Transformer, iron core, step-up

Transformer, iron core, tapped primary Transformer, iron core, tapped primary

Transformer, iron core, tapped secondary Transformer, iron core, tapped secondary

Transformer, powdered-iron core Transformer, powdered-iron core

Transformer, powdered-iron core, step-down Transformer, powdered-iron core, step-down

Transformer, powdered-iron core, step-up Transformer, powdered-iron core, step-up

Transformer, powdered-iron core, tapped primary Transformer, powdered-iron core, tapped primary

Transformer, powdered-iron core, tapped secondary Transformer, powdered-iron core, tapped secondary

Transistor, bipolar, NPN Transistor, bipolar, NPN

Transistor, bipolar, PNP Transistor, bipolar, PNP

Transistor, field-effect, N channel Transistor, field-effect, N-channel

Transistor, field-effect, p channel Transistor, field-effect, P-channel

Transistor, MOS field-effect, N channel Transistor, MOS field-effect, N-channel

Transistor, MOS field-effect, P channel Transistor, MOS field-effect, P-channel

Transistor, photosensitive, NPN Transistor, photosensitive, NPN

Transistor, photosensitive, PNP Transistor, photosensitive, PNP

Transistor, photosensitive, field effect, N-channel Transistor, photosensitive,
field-effect, N-channel

Transistor, photosensitive, field-effect, P-channel Transistor, photosensitive, field-effect, P-channel

Transistor, unijunction Transistor, unijunction

Triac Triac

Tube, diode Tube, diode

Tube, heptode Tube, heptode

Tube, hexode Tube, hexode

Tube, pentode Tube, pentode

Tube, photosensitive Tube, photosensitive

Tube, tetrode Tube, tetrode

Tube, triode Tube, triode

Voltmeter Voltmeter

Wattmeter Wattmeter

Waveguide, circular Waveguide, circular

Waveguide, flexible Waveguide, flexible

Waveguide, rectangular Waveguide, rectangular

Waveguide, twisted Waveguide, twisted

Wires, crossing, connected Wires, crossing, connected

Wires, crossing, not connected Wires, crossing, not connected
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