high to low voltage dilemma

@sauravgoswami-UAfTlI • Oct 25, 2024

Oct 25, 2024

1.4K

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.

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frodo.rok

@frodorok-KGYXm6 • Jan 12, 2009

sauravgoswamihi 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.

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ashuashi

@ashuashi-Z4179a • Jan 12, 2009

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

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sauravgoswami

@sauravgoswami-UAfTlI • Jan 12, 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

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ashuashi

@ashuashi-Z4179a • Jan 13, 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

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sauravgoswami

@sauravgoswami-UAfTlI • Jan 13, 2009

definately, i will try to do it!!!

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vasanthmbs

@vasanthmbs-3fG5UO • Jan 13, 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)...

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sauravgoswami

@sauravgoswami-UAfTlI • Jan 13, 2009

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

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vasanthmbs

@vasanthmbs-3fG5UO • Jan 15, 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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