CMOS Siren (CB26157E)

Found in the 1991 Electronics Experimenter Handbook magazine, this circuit has good power and is recommended to be triggered by light.

| Clique na imagem para ampliar |

Timer CA3140 and 555 (CB14932E)
This timer produces a continuous sound at the end of the timer set in potentiometer RV1. The...
Volt Test (CB18727E)
This 3-and-a-half-digit voltmeter was obtained in a 1991 documentation. Actuating integrated...
Temperature Control Triac and L121 A (CB15127E)
We found this temperature control in the SGS manual of linear integrated circuits of 1982. The...