This PLL circuit was found in the April 1978 issue of Radio Electronics magazine. The circuit is powered with up to 15 V voltages from a symmetrical source.
Using an operational amplifier, this circuit was found in the March 1996 issue of Electronics Now...
This simple transistor gain test acts as an oscillator for the transistor under test. The circuit is...
Found in a 1980 documentation, this circuit drives a transducer (X1) when the car battery has its...