Digital Fuel Gauge (CB25338E)

Based on the CA3161 and CA3162, this circuit was found in the July 1990 Radio Electronics magazine. The circuit is two digits only.

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AC Switch with Triac (CB25855E)
The load controlled by this circuit depends on the triac used. The circuit is from Electronics Now magazine...
Dual Power Supply with 9 V Battery (CB1344E )
The operational amplifier of this low current source may be any of the JFET type. The output...
Old Push Pull Lower Power Amplifier (CB944E)
This stage was used in old audio ampliiers and radios from the 1950s and 1960s. It uses one of the...