Touch sensor (CB8723E)

Found in a 90s Popular Electronics, this circuit uses two PLL tone recognizers to trigger by touch an external load.

| Clique na imagem para ampliar |

Monostable with the 4001 (CB25119E)
This two-port monostable of the 4001 was suggested by an article in the April 1988 Radio...
Precision Ramp Generator (CB10042E)
We found this circuit in a documentation from the 70s. Semiconductors are from the era and can be...
Economic Switched Power Supply (CB16693E)
This circuit is from 1992 documentation. The transistor can be a TIP42 with a good heat sink for...