DS51884A, Reference Design Using MCP3909 and PIC18F85J90 Single Phase Energy Meter

DS51884A, Reference Design Using MCP3909 and PIC18F85J90 Single Phase Energy Meter. The MCP3909/PIC18F85J90 Single Phase Energy Meter Reference Design is a fully functional single phase meter. The design is intended to be low cost and is transformer less. The design uses a half-wave rectified power supply circuit and a shunt current sensing element. A single MCP3909 acts as the analog front end measurement circuitry. The PIC18F85J90 directly drives the LCD glass and displays active energy consumption