This super regenerative detector circuit was found in an English documentation from 1963. The coil is frequency compliant. The transistors are germanium of the time.
This circuit was found in the March 1980 issue of Radio Electronics magazine. It is based on the...
This circuit (2009) has driver control through the RTS signal or in automatic mode through the...
This monotone alarm oscillator circuit was found in July 1975 Radio Electronics magazine. Power is...