Astable multivibrator
11 parts
The granddaddy of blinkers: two cross-coupled transistors that can never both stay on, so they take turns. Each collector swings rail-to-ground in antiphase while the LEDs alternate.
- V1 9V
- LED1
- R1 330Ω
- Q1
- R2 47kΩ
- LED2
- R3 330Ω
- Q2
- R4 47kΩ
- C1 47nF
- C2 47nF
