This preamplifier circuit for turntable cartridges was found in the March 1994 issue of Electronics Now magazine. The circuit is suitable for magnetic cartridges.
Many oscilloscopes have high impedance inputs that make it difficult to observe high frequency signals...
This common operational configuration can be implemented with modern equivalent. Next to the...
It is the traditional version of a Galena radio with a germanium diode and a high impedance phone....