This is the circuit of a modified Heathkit kit. The circuit was found in a Radio Electronics from December 1965. The author of the circuit included improvements to the original circuit.
We found this circuit in the June 1991 issue of Radio Electronics magazine. The circuit can be...
This precision circuit, which also functions as a bridge, was found in a February 1967 Popular...
We found this circuit in an old documentation from the 70s. The text is the original one of the...