Night Light (CB25088E)

This circuit controls an external light that turns on at dusk and off in the morning. The circuit is from a Radio Electronics from October 1987.

| Clique na imagem para ampliar |

Powerful Fire Siren (CB17503E)
This circuit was found in a 1986 publication. However, it can still be easily assembled, as the...
Debouncer 4093 (CB11565E)
In the figure we have an anti-ring circuit with 4093. The duration of the pulse is given by R1 and...
4 5 MHz Oscillator (CB18284E)
This circuit was originally indicated to generate audio signal for analog TV sound. The circuit is from...