This MOSFET circuit for microphone applications was found in the December 1969 issue of Radio Electronics magazine. The transistors are uncommon today.
This is a bridge for the measurement of low value resistances and high values too. The circuit...
This circuit was found in Radio Electronics magazine from April 1961. The device has a slot for...
We found this circuit in an English publication. The transistor can be a BC558. The instrument can be...