This circuit for VCR recording heads was found in the February 1990 issue of Radio Electronics magazine. The circuit is use do observe signal in an oscilloscope.
This sensitive Japanese mid-wave receiver from the 1960s has an output power of 45 mW and is...
This circuit appeared in a Radio Electronics magazine in March 1962. The circuit uses two...
What's different about this transistorized circuit is the fact that it doesn't use a voltage...