1 kHz low pass filter (CB7579E)

This filter can be implemented with almost any operational. The power suppply must be symmetrical.

CMOS Crystal Oscillator and Divider (CB16000E)
The circuit presented is a 10 MHz oscillator with crystal, which already has several splitters for...
Adjustable continuity tester (CB25750E)
We found this circuit in the August 1994 Electronics Now magazine. The circuit is based on the...
Speed control using the 555 (CB7523E)
This circuit was obtained in a 1982 Maplin magazine. The circuit can be applied to equivalent power...