Audible Alarm (CB26232E)

This alarm siren was found in volume 5 of the 1995 Encyclopedia of Electronic Circuits. The circuit powers a buzzer.

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150 Hz to 1.5 kHz Wien Bridge Oscillator (CB25907E)
This circuit was found in the December 1995 issue of Electronics Now magazine. The circuit...
Photocell Motor Control (CB14945E)
In the figure we have the photo-conductive way of using a photocell to control a small motor with...
Synchronized Adjustable Sinusoidal Oscillator (CB18248E)
This circuit, which can be used on percussion instruments, has the oscillation point adjustment made in...