This circuit was suggested by Signetics in 1980s documentation. The circuit makes use of the hard-to-obtain component of our day. It is for reference only.
This preamplifier circuit for turntable cartridges was found in the March 1994 issue of...
The circuit presented is a receiver for the medium wave band. Again, the components are all...
The SCR sector of this circuit can be powered by high voltage AC and instead of the LEDs we can...