Digital Fuel Gauge (CB26173E)

This two-digit circuit was found in the 1999 Radio Experimenter Handbook. It uses the CA3161 and CA3162 A/D converter pair common at the time.

| Clique na imagem para ampliar |

Remote Control Extender (CB26151E)
This circuit appeared in the 1991 Electronics Experimenter Handbook. The circuit is for remote...
Power control (CB23586E)
This circuit was found in Radio Electronics magazine from January 1959. The power transistor must...
Atmospheric noise monitor (CB21066E)
This circuit uses an MW radio tuned to around 540 kHz to detect atmospheric signals, for example, from...