NE602 Crystal Oscillator (CB26005E)

This oscillator reaches 50 MHz with an overtone crystal. The circuit is from Electronics Now magazine from February 1997.

Water Tank Sensor with Alarm (CB16458E)
This circuit has a programmable alarm that can be triggered with different water levels. The...
Battery Power Monitor (CB5894E)
This circuit was obtained from the Linear Technology 2005 Application Manual. The circuit sensing...
Double Christmas Flasher (CB25106E)
This circuit was published in the December 1987 Radio Electronics magazine. It uses two 555s to...