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Electronics Schematics/Circuits Symbols

Ammeter Symbol
Ammeter

Amplifier general
Amplifier general
Amplifier, inverting
Amplifier, inverting

Amplifier, operational
Amplifier, operational

AND gate
AND gate
Antenna, balanced
Antenna, balanced
Antenna, general
Antenna, general

Antenna, loop
Antenna, loop

Antenna, loop, multiturn
Antenna, loop, multiturn
Battery Symbol
Battery
Capacitor, feedthrough
Capacitor, feedthrough
Capacitor, fixed
Capacitor, fixed
Capacitor, variable
Capacitor, variable
Capacitor, Variable, Split Rotor
Capacitor,
variable, split-rotor
Capacitor, Variable Split Stator
Capacitor,
variable, split-stator

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

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

Cathode, electron-tube indirectly heated
Cathode, 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, tapped
Inductor, 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-frequency or 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-throw

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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