Transistors & ICs
S8050 NPN Transistor
An electronic switch. Base on the left, collector at the top, emitter at the bottom. Always use a resistor on the base.
- Value
- NPN
- Family
- Transistors & ICs
- Terminals
- collector (top), emitter (bottom), base (left)
Transistors & ICs blocks
Transistors and ICs let a small signal control a bigger one. A transistor acts as an electronic switch or amplifier, and the Melody IC generates a tune on its own.
Circuits that use this block
- Next stepSwitching with a transistorA tiny current through the base turns on the LED.
- Next stepA circuit that craves lightThe LED lights in daylight and turns off when you cover the light sensor.
- Next stepTurn the brightness up or downA potentiometer sets the transistor's base voltage, so it dims the LED.
- Next stepTouch to activateYour finger on the X Junction pads passes a tiny current into the transistor base.
- Next stepCapacitor delay-off timerPress the button and the LED stays on for a while after you let go.
- ClassicMaking a melody louderA transistor amplifies the Melody IC so the passive buzzer rings out.