This circuit for the 60 kHz range was found in 73 magazine and published in 1995. The circuit uses a ferrite rod. Note the direction of the coil windings.
This circuit was found in an American documentation from the 90s. It consists of a variable with a...
The circuit shown in the figure generates a pulse train whose frequency is determined by the...
We found this circuit in a 1994 Linear Applications Handbook by National Semiconductor. The LM10...