Transistor Darlington (NPN)
Schematic symbol
Two NPN transistors combined in one (e.g. TIP120), giving a very high current gain, so a tiny base current can switch a motor or relay directly from a microcontroller pin. Connect it like a normal NPN: load between the supply and collector, emitter to ground, and a resistor on the base. It drops more voltage when on (about 1–2 V) than a single transistor.
npn
bjt
bipolar junction transistor
Details
- Reference Character
- Q
- Default Value
- —
- Author
- Circuit Canvas
- License
- Circuit Canvas Parts License
- Library
- Circuit Canvas Library
