high to low voltage dilemma

Replies

• 

  frodo.rok

  sauravgoswami

  hi guys,I am developin an instruments which accepts high voltage as its input,but when I am trying to reduce the voltage using a voltage divider with increse in voltage i am lsoing my accuracy i have tried to amplify it but everytime i had to adjust the gain,it is crucial to me as the input will be fed to the controller board and final results will be depended on this input.

  Though I dont understand exactly what you are looking for I wll still try to answere you.
  If you need to reduce the voltage you can use transformer too.
  And to improve on accuracy you can use feedback path.
• 

  ashuashi

  Can you provide more details to what development you are looking into to help you in some way
• 

  sauravgoswami

  Ok let it make simple,I am integarting a High voltage probe with a device which injects high voltage,and to process the result,i need that high voltage probe to sence the voltage,which reduce it to equivalent voltage,which I can feed to my controller board consisting of DSP,and then display the result,but my problem is as the voltage goes above 1Kv,accuracy shoots from 0.5% to 1% and goes on incresing,hence I cannot claim the accuracy of my device...hope you understand
• 

  ashuashi

  Just a suggestion
  
  Try to step down the high voltage to a level 220V through auto transformer & further reduce it to your desired voltage.
  
  cant say how much it will help you
• 

  sauravgoswami

  definately, i will try to do it!!!
• 

  vasanthmbs

  the first thing is to calculate the voltage needed for components in the controller board & then use some electronics components (viz... mobile phone charger converts 230v to 3v as tis 3v is dc)...
• 

  sauravgoswami

  I welcome your suggestion definately I can use your logic!!!
• 

  vasanthmbs

  you can use phase attuenators , i thinks it is correct element to control voltage... and it will give supply to every component at required voltage.......