The RCA integrated circuit used in this control is uncommon today. The circuit is from an Electronics Now from July 1995. The sensor determines the value of the adjustment potentiometer.
This crystal configuration can be made with triggers of any logic. The frequency is given by the...
This circuit was obtained from an 80s factory manual. The integrated circuits used are uncommon...
We found this circuit in an old American documentation. It is an electronic rheostat with a...