Electricity > Circuit Symbols
| Symbol |
Component |
|
Joined conductor |
|
|
|
|
|
Potentiometer |
|
Preset Potentiometer |
|
Thermistor |
|
|
|
|
|
|
|
Power supply |
|
Crossing Conductors (no connection) |
|
|
|
|
|
NPN transistor |
|
Amplifier |
|
Fuse |
|
Resonator |
|
|
|
|
|
Single-pole-single-throw switch (SPST) (normally open) |
|
|
| Symbol |
Component |
|
Single-pole-single-throw switch (SPST) (normally closed) |
|
Single-pole-double-throw switch (SPDT) |
|
Double-pole-double-throw switch (DPDT) |
|
Push-to-make
switch (PTM) |
|
Push-to-break switch (PTB) |
|
Dry-reed switch |
|
Opto switch |
|
Relay |
|
|
|
Motor |
|
Loud speaker |
|
Solenoid |
|
Buzzer |
|
Microphone |
|
Logic Gate: AND |
|
Logic Gate: OR
|
|
Logic Gate: NOT (inverter) |
|
Logic Gate: NAND |
|
Logic Gate: NOR |
|
Integrated circuit (IC) (see below) |
|
Integrated Circuits
Fig 1: 555 timer IC
This diagram (see fig 1) shows the circuit connections (numbered to show which legs used) e.g. a 555 timer IC.
Fig 2: Quad 2-input NAND gate IC
Integrated circuits may also be drawn to show how their leg connections correspond to their function e.g. a Quad 2-input NAND gate IC (see fig 2).