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.

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Integrated Amplifier and Driver (CB24771E)
This 50 W amplifier was found in the November 1983 Radio Electronics issue. The circuit is...
Digital Windshield Wiper Timer (CB24567E)
This sophisticated circuit was found in the November 1978 issue of Radio Electronics magazine. Based on...
Pass Monitor (CB24892E)
This circuit is from Radio Electronics from March 1985. The circuit uses common components at the...