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 |

Astable using operational amplifier (CB8004E)
Found in a 90’s Popular Electronics, this circuit applies to almost any operational amplifier. With...
Shutdown circuit 2 (CB8419E)
Found in a 90s Popular Electronics, this circuit triggers a relay in case of overvoltage. Can be used as a...
Low Pass 1 kHz Filter (CB909E)
The CUT frequency for this filter is determined by the capacitors. The µA4138 is a quad version of...