SA9602F データシートの表示（PDF） - South African Micro Electronic Systems

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SA9602F

SINGLE PHASE BIDIRECTIONAL POWER/ENERGY METERING IC WITH INSTANTANEOUS PULSE OUTPUT

South African Micro Electronic Systems 

SA9602F/SA9602J

The diagram below shows the behavior of the direction indication, DIR, when energy

reversal takes place. The timing period for the DIR signal to change state, t , will

DIR

be defined by the time it takes for the integrater to count down from its value at the

time of energy reversal. This is determined by the energy consumption rate.

I

t

V

t

D IR

DR-01 283

t

t D IR

The square wave signal on FMO indicates the polarity of the mains voltage.

V

t

FM O

t

t MAIN S

D R -0 1 2 8 4

Due to comparator offsets, the FMO low to high transition can occur within a range

as shown above. The time between succesive low to high transitions will be equal

to the mains voltage period.

sames

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