We found this sensitive high input impedance voltage amplifier in the November 1970 Radio Electronics magazine. The circuit is powered by 18 V power source.
This circuit called “surf man” was published in the August 1992 Radio Electronics magazine. It...
This Hartley oscillator uses an audio output transformer that can be obtained from small, unused...
The oscillator shown in the figure can generate signals between 3 and 15 MHz approximately, depending...