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You are here: Home / Topics / reading 230v AC

reading 230v AC

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Microcontroller › 8051 › reading 230v AC

  • This topic has 2 replies, 3 voices, and was last updated 9 years, 3 months ago by balaji.n.
Viewing 3 posts - 1 through 3 (of 3 total)
  • Author
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  • May 10, 2013 at 3:54 am #2390
    satish
    Participant

    please anybody can help how to read the 3 phase 230v AC and display on LCD using 8051 microcontroller..

    May 10, 2013 at 7:31 am #9698
    AJISH ALFRED
    Participant

    Hi Satish,

    I’ve done such a thing and it was working perfectly. You might know how to make a simple rectifier using step down transformer. The circuit is the same, step down the 230V into 5V using a step down transformer, rectify using bridge rectifier, eliminate the ripples using a 100uF capacitor.

    Now give the output directly to the ADC and read the value. You might need some caliberation which you can implement in your code.

    Be careful as you are dealing with mains supply!!

    May 11, 2013 at 11:57 am #9710
    balaji.n
    Participant

    dear friends

     

    I agree with the ajiseh commants using rectifier circuit

    but in adc0804  module is 8 bit only so we should uptain the output for every 0.90volt per digitel reading so u want to more accurcy  u try with 10 bit adc  or otherwise use a pic micro controller its have inbuild 10 bit adc

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