sauravgoswami
sauravgoswami
Electronic
12 Jan 2009

high to low voltage dilemma

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.
frodo.rok

frodo.rok

Branch Unspecified
12 Jan 2009
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

ashuashi

Branch Unspecified
12 Jan 2009
Can you provide more details to what development you are looking into to help you in some way
sauravgoswami

sauravgoswami

Electronic
13 Jan 2009
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

ashuashi

Branch Unspecified
13 Jan 2009
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

sauravgoswami

Electronic
13 Jan 2009
definately, i will try to do it!!!
vasanthmbs

vasanthmbs

Branch Unspecified
14 Jan 2009
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

sauravgoswami

Electronic
14 Jan 2009
I welcome your suggestion definately I can use your logic!!!
vasanthmbs

vasanthmbs

Branch Unspecified
15 Jan 2009
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.......

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