參數(shù)資料
型號(hào): DRM040
英文描述: Single Phase Digital Power Meter Reference Design
中文描述: 單相電能表的數(shù)字參考設(shè)計(jì)
文件頁(yè)數(shù): 20/80頁(yè)
文件大小: 1025K
代理商: DRM040
Hardware
Designer Reference Manual
DRM040 — Rev 0
20
Hardware
MOTOROLA
2.1 Main Blocks
Signal acquisition and conditioning:
Current transformer & Voltage transformer
Current attenuator & low-pass filters for both currents and voltage
signal
Baseline (V
refh
/2) voltage generation
V
refh
generation
Power supply and battery backup:
Supply transformer, rectifier-filter, voltage regulator
AC power failure detector
Short term power backup by SuperCap
Long term power backup by MCU controlled Li-Ion battery(ies)
MCU and all other I/O:
Trimmable 32768 Hertz crystal oscillator
LCD display
Infrared communication (IEC 61107) interface
RS-232D serial communication interface
MON08 programming interface
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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