ElectroDex
NEON SYMBOL DATABASE // V.2.1
Symbol Identifier
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Passive Components
Resistor
Resistor (IEEE/ANSI)
Capacitor
Capacitor (Non-polarized)
Inductor
Inductor (Coil)
Semiconductors
Diode
Diode
LED
Light Emitting Diode
NPN Transistor
NPN Transistor
PNP Transistor
PNP Transistor
Power Sources
Ground
Ground Connection
VCC
VCC / Power Rail
Battery
Battery Cell
Switches & Relays
SPST Switch
Single Pole Single Throw Switch
Push Button
Push Button (Normally Open)
Relay
Relay Coil & Contact
Protection
Fuse
Fuse
Magnetics
Transformer
Transformer
Electromechanical
Motor
Electric Motor
Sources
AC Source
AC Voltage Source
DC Source
DC Voltage Source
Audio
Speaker
Loudspeaker
Microphone
Microphone
RF
Antenna
Antenna
Digital Logic
AND Gate
AND Gate
OR Gate
OR Gate
NOT Gate
NOT Gate (Inverter)
XOR Gate
XOR Gate
Connectors
Connector
Terminal Block / Connector
Measurement
Voltmeter
Voltmeter
Ammeter
Ammeter
Transistor Symbols
NPN Transistor
NPN Bipolar Junction Transistor
PNP Transistor
PNP Bipolar Junction Transistor
N-Channel MOSFET
N-Channel MOSFET
NPN Bipolar Transistor
Allows current flow when high potential at base
Logic Gates
AND Gate
Output is 1 only if all inputs are 1
OR Gate
Output is 1 if at least one input is 1
NOT Gate (Inverter)
Inverts the input signal
NAND Gate
Output is 0 only if all inputs are 1
NOR Gate
Output is 0 if at least one input is 1
Miscellaneous Symbols
Transformer
Changes voltage level of AC supply
Protection Devices
Fuse
Disconnects circuit when current is too high
Output Devices
Motor
Converts electrical energy into mechanical energy
Switches
Relay
Electrically operated switch
Audio Devices
Speaker
Converts electrical signal to sound
Microphone
Converts sound to electrical signal
Communication
Antenna
Transmits or receives radio waves
Diode Symbols
Zener Diode
Allows current to flow in reverse direction when voltage is above breakdown
Meter Symbols
Ammeter
Measures electric current
Ohmmeter
Measures electrical resistance
Voltmeter
Measures voltage
Ammeter
Measures electric current
Switch Symbols
SPST Toggle Switch
Disconnects current when open
SPDT Toggle Switch
Selects between two connections
Pushbutton Switch (N.O)
Momentary switch - normally open
Resistor Symbols
Resistor
Resistor reduces the current flow
Potentiometer
Adjustable resistor - has 3 terminals
Capacitor Symbols
Capacitor
Stores electric charge
Polarized Capacitor
Electrolytic capacitor
Inductor / Coil Symbols
Inductor
Coil / solenoid that generates magnetic field
Power Supply Symbols
Battery
Generates constant voltage
DC Voltage Source
Generates constant voltage
AC Voltage Source
AC voltage source
Ground Symbols
Earth Ground
Used for zero potential reference
Chassis Ground
Connected to the chassis of the circuit
Lamp / Light Bulb Symbols
Lamp
Generates light when current flows through
Diode / LED Symbols
Diode
Diode allows current flow in one direction only
Light Emitting Diode (LED)
LED emits light when current flows through
Misc Symbols
Motor
Electric motor
Transformer
Change AC voltage from high to low or low to high
Buzzer
Produce buzzing sound
Fuse
The fuse disconnects when current above threshold