Heartbeat Detector (CB25472S)

This heartbeat sensor circuit was found in the July 1992 issue of Radio Electronics magazine. The circuit uses a 741 with a single power supply.

| Clique na imagem para ampliar |

4046 oscillator (CB9221E)
This oscillator with the PLL 4046B was obtained from a 90s Radio Electronics. The circuit...
Crowbar (CB8361E)
This protection circuit trips by quickly blowing the fuse in the event of an overcurrent. The circuit is...
Complete FET Test (CB19255E)
This circuit is intended for the testing of junction FETs, providing several reading options...