Raytheon's used integrated circuit is no longer common today. The circuit was obtained in a documentation from the 80's and must be powered by a symmetrical source.
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...