555 Timer Astable LED Flasher

CI

CircuitSim

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Created May 10, 2026

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Updated Jun 30, 2026

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About this circuit

A free-running 555 astable oscillator that flashes an LED while exposing output and timing-capacitor waveforms.

Components used

Components used
1 component
NameManufacturerMPNCountType

555 Timer

Generic

555

1

Official

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