This preamplifier circuit for turntable cartridges was found in the March 1994 issue of Electronics Now magazine. The circuit is suitable for magnetic cartridges.
We found this circuit in the April 1978 issue of Radio Electronics magazine. The power supply must...
The presented circuit is used to test ordinary fluorescent lamps. This circuit also has a mains...
Found in an American documentation from 1969, this circuit operates at a frequency determined by the...