This RF monitor or field strength meter can use instruments from 100 uA to 1 mA full scale. The diode is germanium type.
This circuit is from the July 1973 Radio Electronics magazine. The circuit is based on the XR-205,...
Indicated as a joke or challenge this circuit shows how it is possible to control two lamps using...
September 2016 - Mouser Electronics is providing new ultraviolet LEDs VLMU1610 of Vishay suitable...