Suggested by a 1965 Electronic Design, this circuit has a gain of 15 dB at 45 MHz and can be changed to operate on other frequencies. The tetrode FET is an uncommon component today.
This circuit was found in an American documentation from the 90's. The circuit is intended for...
This circuit was found in an American documentation from the 80's. The sensor is a special...
With the presented circuit it is possible to measure resistances of many megohms using a low...