Found in 1967 General Electric documentation, this circuit is intended for the control of electroluminescent panels used at the time, Valid as a reference for restoration.
Published in Popular Electronics with the curious name of Obnoxious Noisemaker, this 1968 circuit...
This preamplifier circuit for turntable cartridges was found in the March 1994 issue of...
E) This circuit was found in documentation from the 1980s. The integrated circuit used is not very...