555 TIMER ARTICLES

The 555 Timer IC

Basic 555 Operation

555 Block Diagram

 BASIC 555 TIMING CIRCUITS

555 Timer Astable Multivibrator

555 Timer Monostable Multivibrator

 555-BASED TONE / WAVEFORM GENERATING CIRCUITS

Audible Metronome

Punk Console

Warbler Siren

Tone Burst Generator

3-Mode Tone Generator

Electronic Toy Organ

Voltage-Controlled Oscillator (VCO)

Variable Frequency Tone Generator

 OTHER 555 CIRCUITS

555-Based Light Dimmer (PNP Output)

555-Based Light Dimmer (NPN Output)

Touch-Triggered Switch

Mechanical Switch Debouncer Circuit