Micro metronome (CB20743E)

This simple CMOS metronome circuit can be mounted in a small box, providing both sound and light sources.

CMOS Output Zero Crossing Detector (CB14158E)
We found this circuit in the Linear Applications Handbook published by National Semiconductor in...
555 Fixed Period Generator (CB25498E)
In a September 1992 Radio Electronics article, we found this basic 555 circuit used to generate fixed...
LM3914 Peak Meter (CB24635E)
In the figure we have a simple way to have a peak bargraph indicator. The amplifier is of the...