This is a two-input audio switching circuit. The operational can be of any type and more entries can be added. The power supply must be symmetrical.
This circuit has a full scale of 1 kW, being indicated for the 110 V power grid. Adaptations can...
This crystal filter is normally used in receivers and the frequency depends on the crystal used...
This simple 2004 circuit uses a common sensor used in television and other equipment. It checks...