High constant current driver

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- Pubs
  
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posted
15 years ago

Fri, Oct 17, 2008 12:18 AM

Hi,

I am looking for a high side constant current driver. Can some one show me some information . . . .

Thank you, Pubudu

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- HardySpicer
  
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posted
15 years ago

Fri, Oct 17, 2008 3:30 AM

A differential compound dc generator should do. Used to be used for arc-welding.

Hardy

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- Spehro Pefhany
  
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posted
15 years ago

Fri, Oct 17, 2008 4:19 AM

Hey, Pubes, assuming you want a VCCS, try a low-side VCCS and a current mirror. You can have a ratio other than 1:1 in the mirror if it is more appropriate.

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- John Larkin
  
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posted
15 years ago

Fri, Oct 17, 2008 4:28 AM

Voltage? Current? Speed? Precision? Truly constant, or controlled by some signal?

John

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- Adam S
  
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posted
15 years ago

Fri, Oct 17, 2008 7:50 AM

I suppose so, but the OP could save his money with a LM317 wired as a constant current source and achieve precisely the same goal.

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