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MSP430F6779 Frequency calculation

Luis Oliveira
Prodigy 40 points

Other Parts Discussed in Thread: MSP430F6779

Can anyone tell me if the MSP430F6779 needs to be measuring current AND voltage to give me the Frequency (Hz) of the power line?

Can I get this by measuring only the current (using a CT)?

 

Thanks

Luis

  • 0
    Guru 46710 points

    Luis Oliveira said:
    measuring current AND voltage to give me the Frequency (Hz) of the power line

    You don't need to measure current, nor voltage. Zero crossing detection of mains voltage is sufficient to measure mains frequency.

  • 0 in reply to Ilmars
    Prodigy 40 points

    I should had mada my self clearer. 

    The MSP430F6779 can be used with Texas energy libraries.

    Does the code in those libraries use the voltage or current to calculate the frequency?

  • 0 in reply to Luis Oliveira
    Guru 46710 points

    Luis Oliveira said:

    The MSP430F6779 can be used with Texas energy libraries.

    Does the code in those libraries use the voltage or current to calculate the frequency?

    Don't know. You have great opportunity to download library and see for yourself. By using keyword search it is not that difficult job to see whether frequency measurement is there.

    Every energy meter measure voltage, most probably run some zero crossing detection to get exact phase information. So it shall be quite easy to add frequency measurement, if not present

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