This dual-tuned 60 Hz oscillator was found in the Radio Experimenter Special projects of 1993. The circuit has the timing ranges given by C1 which can be changed.
The integrated circuit used in this filter is like to a double 741 and must be powered by a...
This Hartley telegraphy oscillator operates with the transmitter signal generating a tone in a...
This circuit, which appears at other points on this site, can be designed with both 4011 and 4001...