Digital Oil Pressure Gauge (CB25336E)

This circuit was found in the July 1990 Radio Electronics magazine. It is based on the 3-digit indicator ICs CA3161 and CA3162.

| Clique na imagem para ampliar |

Touch sensor (CB8723E)
Found in a 90s Popular Electronics, this circuit uses two PLL tone recognizers to trigger by touch an...
Unit Gain MOSFET Amplifier (CB6128E)
This Hughes circuit is from 1968. Equivalent modern components can be used. The input impedance is...
Guitar Amplifier (CB17061E)
This circuit is from 1995 documentation. In the original, the source is symmetrical at 12 V, but...