3 V LED Pulsator (CB16932E)

This circuit causes an LED to flash at a frequency determined by the capacitor. The circuit is powered by only 3 V and can be used for signaling.

| Clique na imagem para ampliar |

Timer 555 (CB24402E)
This circuit from a Radio Electronics from February 1976 activates the relay in two different ways...
White Noise Generator (CB19614E)
The integrated circuit used in this project is unusual and it includes internal transistors that...
Headphone Amplifier (CB4518E)
This circuit is quite old, from 1964, but can still be mounted with BC558 transistors. The circuit is...