This circuit has the function of automating some type of equipment when a powerful transmitter is activated nearby. The circuit was found in a 1967 documentation.
This inverter, of a few dozen watts of power, was found in a 1985 documentation. The transformer has a 12...
The circuit shown in the figure has a more efficient action, with an attenuation of 12 dB per...
The circuit shown in the figure is from a 1985 documentation. It can be assembled in two very...