This circuit for signals up to 30 MHz can improve your reception in the medium and short-wave band. We found it in the Radio Electronics magazine of February 1989.
This filter has a cutoff frequency of 0.026 Hz given by R and C. These components can be...
This circuit is from the 1990 Motorola Linear Databook. The circuit can be implemented with other...
This circuit allows selective relay actuation in the same line according to the applied voltage....