This circuit implements a 3-way control, with outputs in A, B and C, using CMOS integrated circuits. I found this circuit in an old publication from 1978.
This is a bridge for the measurement of low value resistances and high values too. The circuit...
We found this circuit in a publication for radio amateurs of 1976. The operational amplifier is a...
This circuit, with two operationals, was obtained from an old American publication. Operational...