We found this circuit in the Radio Electronics magazine of December 1972. It generates signals in 6 frequency bands, being indicated for experimental applications with TTL circuits.
This circuit was obtained from an ancient American documentation. The coil consists of 80 to 100...
In this very simple circuit, the LED flashes at a frequency of 60 Hz. It is convenient to check the...
We found this circuit in the October 1991 issue of Radio Electronics magazine. The circuit uses...