Sound generator and oscilator circuit diagrams

Electronic Canary

An electronic version of a chirping canary. May be used as an alarm, a sound effects generator or perhaps a replacement doorbell.

Pulse-Generator & Signal-Tracer

Dual-purpose test-instrument. Very simple circuitry, 1.5V Battery-operated

Electronic Siren

An electronic siren made from discrete components. A push button switch is used to create the sound, which rises in pitch when the switch is pressed, and falls in pitch when the switch is released.

Sound Effects Generator

This circuit uses a UM3561 IC to produce four different sound effects.

Square Wave Oscillator

A very basic square wave generator using a CMOS 4011 NAND gate.

Bells ring Generator

Three circuit options. Can be synchronized to Christmas tree flashing lights

Ultrasonic Dog Whistle

It's well known that many animals are particularly sensitive to high-frequency sounds that humans can't hear. Many commercial pest repellers based on this principle are available, most of them operating in the range of 30 to 50 kHz.

Mini Metronome

Linear scale - Small size. 40 to 208 beats per minute

Cuckoo-song Generator

Agreeable, very close sound imitation. Suitable for sound effects, door-bells etc.

One-IC two-tones Siren

Double-tone Police sound. Single-tone old ambulance sound