555 astable oscillator
6 parts
The most-built chip in electronics, wired as a free-running oscillator: the capacitor charges through both resistors, discharges through one, and the chip flips every time it crosses ⅓ or ⅔ of the supply. Both traces are on screen — the square output and the exponential ramp that makes it.
- V1 9V
- R1 47kΩ
- R2 47kΩ
- C1 10nF
- T5551
- R3 1kΩ
