Hartley for 1 MHz (CB25588E)

This oscillator was found in the July 1993 Electronics Now magazine. The coil is wound with 28-wire in a 0.5 cm shape.

600 ohms line Amplifier (CB16795E)
This circuit uses a 741 operational amplifier that must be powered by a symmetrical source of 6 to...
1 kHz Transistor Oscillator 1 (CB12906E)
This oscillator generates a 1 kHz signal, using an old germanium PNP transistor. The circuit was...
Audio Visual Output Indicator (CB25193E)
This circuit was obtained from a Radio Electronics issue from January 1989. The indicator is a...