digital to frequency converter.

Discussion in 'The Projects Forum' started by Dimpi, Oct 11, 2013.

  1. Dimpi

    Thread Starter Member

    Sep 6, 2013
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    Hi all.

    For a digital to frequency converter,please tell me the frequency at which its works.is there any internal architecture of digital to frequency converter??

    the pdf attached is a IC used in my 3-phse energy meter.i want to know the procedure for finding the frequency output from the IC if the power consumed is 1KWH.Please help.
     
  2. DickCappels

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    Aug 21, 2008
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  3. Dimpi

    Thread Starter Member

    Sep 6, 2013
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    the link u gave is not opening..

    can u please tell me the procedure to calculate the exact frequency using this IC (attached in pdf format)from a power consumption of 1KWH...
    By seeing the functional block diagram i can found out the output of LPF to be varying from 6.1to 9HZ(if i am correct).then wat to do nxt??
    please help.
     
    Last edited: Oct 11, 2013
  4. Alec_t

    AAC Fanatic!

    Sep 17, 2013
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    Why have you got two threads asking the same question? That IC doesn't have a fixed relation between pulse rate and kWh.
     
  5. Dimpi

    Thread Starter Member

    Sep 6, 2013
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    w

    so how to decide the frequency of the output which is to be applied at the microcontroller(neuvoton N79E844AWG)which m using in my project Energy meter??please elaborate.
     
  6. Alec_t

    AAC Fanatic!

    Sep 17, 2013
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    You have to do a calibration run with known power-consuming loads.
     
  7. DickCappels

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    Aug 21, 2008
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    The phase-locked loop is not what you need, I thought you just wanted to multiply or divide a frequency. This appears to be a thread about power conversion.
     
  8. MrChips

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    Oct 2, 2009
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    I don't know what is a digital to frequency converter.

    If you wish to measure frequency there are two ways of doing that.

    1) You can count the number of transitions occurring within a fixed time interval.

    2) You can measure the time interval between successive transitions.
     
  9. shteii01

    AAC Fanatic!

    Feb 19, 2010
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    In my software radio class we had a topic of DDS. Direct Digital Synthesis. You use digital system to create analog sine wave.
     
  10. MrChips

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    Oct 2, 2009
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    Hah! So the op wants a DDS or a digital frequency synthesizer. Then he needs a binary rate multiplier and a PLL (phase-locked loop).
     
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