By using these symbols, schematics will be easily constructed and easily understood so that the assembly process would be much easier. Below are some symbols of electrical components and electronic components.
Usually a professional electrician will read electrical schematics before the installation process. Besides the application of electrical symbols and electronic symbols can help finding an error or fault during the repair time.
| SYMBOL | COMPONENT | NOTE |
|---|---|---|
| Connections | ||
 | Cable Connection | Connected wire (conductor) |
 | Connected Cable | Connected |
 | Disconnected Cable | Disconnected |
| Switch and Relays | ||
 | Toggle Switch SPST | Disconnect when open |
 | Toggle Switch SPDT | One on - one off |
 | Switch Push-Button (NO) | Connect when the button is pushed |
 | Switch Push-Button (NC) | Disconnect when the button is pushed |
 | DIP Switch | Multiswitch |
 | Relay SPST | Connection (Open and Close) by electromagnetic |
 | Relay SPDT | |
 | Jumper | Connected by jumper |
 | Solder Bridge | Connected by soldered |
| Ground (GND) | ||
 | Earth Ground | Zero reference |
 | Chassis Ground | Body (Chassis) Ground |
 | Common/ Digital Ground | |
| Resistor Symbols | ||
 | Resistor | Resistor |
 | Resistor | |
 | Potensio Meter | Variable Resistor |
 | Potensio Meter | |
 | Variable Resistor | Variable Resistor |
 | Variable Resistor | |
| Condensator Symbols | ||
 | Bipolar Condensator | Condensator |
 | Nonpolar Condensator | |
 | Bipolar Condensator | Electrolytic Condensator (ELCO) |
 | Bipolar Capacitor | Electrolytic Condensator (ELCO) |
 | Kapasitor Variable | Condensator yang nilai kapasitansinya dapat diatur |
| Inductor Symbols | ||
 | Inductor, spul, coil | Generate electromagnetic |
 | Induktor dengan inti besi | Generate electromagnetic |
 | Variable Inductor | Variable Inductor |
| Power Supply | ||
 | DC Source | Generate DC Voltage Source |
 | Current Source | Menghasilkan sumber arus tetap |
 | AC Source | Generate AC Voltage Source |
 | Generator | Generate Electric Voltage |
 | Battery | Generate DC Voltage |
 | Multicell Battery | Generate DC Voltage |
 | Variavle Source Voltage | Voltage Source |
 | Variable Current Source | Current Source |
| Meter Symbols | ||
 | Volt Meter | Measure voltage |
 | Ampere Meter | Measure Current |
 | Ohm Meter | Measure Resistance |
 | Watt Metter | Measure Electrical Power |
| Lamp Symbols | ||
 | Lamp | Produce light when electrified |
 | Lamp | |
 | Lamp | |
| Diode Symbols | ||
 | Diode | Serves as a rectifier of electrical current that can flow in one direction (forward biased) |
 | Zener Diode | DC Voltage stabilizer |
 | Schottky Diode | Diode with low drop voltage, typically found in logic ICs |
 | Varactor Diode | Varactor |
 | Tunnel Diode | Tunnel Diode |
 | LED (Light Emitting Diode) | Produce light when electrified DC in one direction |
 | Photo Diode | Generate electric current when it gets light |
| Transistor Symbol | ||
 | Bipolar NPN Transitor | The electrical current will flow (EC) when the base (B) given a positive |
 | Bipolar PNP Transistor | The electrical current will flow (CE) when the base (B) were given negative |
 | Darlington Transitor | The combination of the two bipolar transistors to increase the reinforcement |
 | JFET-N Transistor | Field Effect Transistor N channel |
 | JFET-P Transistor | P channel Field Effect Transistor |
 | NMOS Transistor | N channel MOSFET transistor |
 | PMOS Transistor | P channel MOSFET transistor |
| Other Symbols | ||
 | Motor | Electric Motor |
 | Transformer, Transformator | Step-Up and Step-Down Voltage |
 | Electric Bell | Sounds when electrified |
 | Buzzer | Producing sound as electrified buzz |
 | Fuse | Safety. Will disconnect when the current exceeds the capacity |
 | Fuse | |
 | Bus | Consists of many lines of data or address lines |
 | Bus | |
 | Bus | |
 | Opto Coupler | As with insulation between two different settings. Connected by light |
 | Speaker | Transform electrical signals into sounds |
 | Mic, Microphone | Change the voice signal into an electric current |
 | Op-Amp, Operational Amplifier | Amplifier input signal |
 | Schmitt Trigger | Reduce noise |
 | ADC, Analog to Digital | Change the analog signal into digital data |
 | DAC, Digital to Analog | Converts the digital data into analog signals |
 | Crystal, Ocsilator | Producing pulses |
| Antenna Symbols | ||
 | Antenna | Radio signal transmitters and receivers |
 | Antenna | |
 | Dipole Antenna | The combination of simple Antenna |
| Logic Symbols | ||
 | NOT Gate | The output will be the inverse input |
 | AND Gate | Output will be 0 if one of input 0 |
 | NAND Gate | The output will be 1 if one input 0 |
 | OR Gate | The output will be 1 if one input 1 |
 | NOR Gate | Output will be 0 if one input 1 |
 | EX-OR Gate | Output will be 0 if the input is equal |
 | D-Flip-Flop | Can serve as data storage (memory) |
 | Multiplexer 2 to 1 | Selecting one of the input data to be sent to the output |
 | Multiplexer 4 to 1 | |
 | D-Multiplexer 1 to 4 | Selecting the input data to be sent to one output |