AVR Singlechip do use single-phase meters use the get the maximum RMS calculation approach, the algorithm is relatively simple, and the schematic diagram protel99.

Packet : 109201282singlemeter.rar filelist
singlemeter\display.c
singlemeter\vssver.scc
singlemeter\init.h
singlemeter\key.c
singlemeter\main.c
singlemeter\Makefile
singlemeter\数字显示(单表).ddb
singlemeter\mesure.pnproj
singlemeter\sigmeter.aps
singlemeter\default\Makefile
singlemeter\default\dep\display.o.d
singlemeter\default\dep\init.o.d
singlemeter\default\dep\key.o.d
singlemeter\default\dep\main.o.d
singlemeter\default\display.o
singlemeter\default\init.o
singlemeter\default\key.o
singlemeter\default\main.o
singlemeter\default\testLED.elf
singlemeter\default\testLED.hex
singlemeter\default\testLED.eep
singlemeter\init.c
singlemeter\sigmeter.aws
singlemeter\default\dep
singlemeter\.dep
singlemeter\default
singlemeter

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