This circuit was obtained in an old Popular Electronics. It makes use of quite common components. The speed of the effect is set to R7. The circuit drives 20 LEDs.
This circuit was found in a 1980s telecommunications publication. The circuit uses a diode bridge to...
Mounting an oscilloscope is the dream of many of our Internet users, although it comes up against...
This is the traditional version of an astable multivibrator that makes two LEDs flash alternately at a...