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.
This circuit indicates the polarity of a voltage applied to the input. The circuit can make use of...
This circuit was obtained in a Teledyne documentation from 1972. The operational amplifier admits...
The sound produced by this circuit, from a 1978 publication, depends on the humidity between the...