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???
02/26/05 14:24
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#88536 - Rich info
Responding to: ???'s previous message
Thank you Ijaz for the valuable reference you recommended.

So do I, Tony. I personally prefer to write the software by Franklin C compiler C51, except the very time critical routines.
Routines such as FFT, gLCD(text,graphics, plot..), ADC, RTC,... are all written in C. The rest are what I asked for it and needs time to cover carefully.

How much accuracy do I lose for comupting power, when voltage and current of one phase are are not at the same time?
Suppose that current is polled 312.5uS later than voltage.
This is for ommitting the sample and hold device and dedicated parts as well.

Thanks

List of 10 messages in thread
TopicAuthorDate
3 phase AC power line measuring center            01/01/70 00:00      
   Required precision            01/01/70 00:00      
   Manufacturer's App. Notes            01/01/70 00:00      
   RMS Measurements            01/01/70 00:00      
      Ready-made            01/01/70 00:00      
         vaporware?            01/01/70 00:00      
            just go down that page            01/01/70 00:00      
      See !            01/01/70 00:00      
      Rich info            01/01/70 00:00      
         Error depends on phase angle            01/01/70 00:00      

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