LM3900 Rectangular Oscillator (CB25179E)

This 1 kHz oscillator uses a Norton LM3900 operating system. The frequency depends on C1 and R1 and can be changed.

Simple Locked Alarm (CB18097E)
This circuit, when triggered, locks, and remains so until the source is switched off for a moment or...
Variable Timer 555 (CB15097E)
With the values of the components indicated, this timer controls intervals from a few seconds to a...
DC to AC Converter (CB25843E)
This circuit with a few watts of power was found in the April 1995 issue of Electronics Now...