This preamplifier circuit for turntable cartridges was found in the March 1994 issue of Electronics Now magazine. The circuit is suitable for magnetic cartridges.
In the diagram, from a documentation from the 90s, we have the way to use an SCR in a full wave...
This circuit, from a 1988 documentation, activates a relay for a period and has a touch shutdown as...
This circuit sequentially drives loads connected to its outputs or even applies the signals to the...