Using a sensor from the time, this circuit was found in the 1992 Radio Electronics Handbook magazine. The circuit uses a pair of integrated two-digit A/D converters.
This circuit was obtained from HAM Radio magazine in an 80's issue. The FETs are types of the time...
Found in the September 1992 issue of Radio Electronics magazine. This circuit generates pulses that...
This blocking oscillator circuit was found in a Radio Electronics from November 1963. The...