Manually Triggered VCO 4046 (CB25758E)

We found this circuit with the CMOS4046 in the August 1994 Electronics Now magazine. The circuit is activated by pressing switch S1.

| Clique na imagem para ampliar |

Operational switching (CB9230E)
Found in Electronics Today International in the 90s, this circuit turns an operational on and off...
Night Switch (CB896E)
At dusk this circuit triggers a relay switching lamps. The circuit can be powered from 6 to 12 V...
Salen Key Low Pass Filter (CB4865E)
This second-order low-pass Salen-Key filter was obtained from an American 1980s documentation. Formulas...