Do I still need a regulator for constant current draw?

Sunsun22 · 7th March 2011, 06:04 AM

I am preparing a LCRC PSU for a 24V 280mA constant current draw device. Since it is constant current, it means I can calculate the R value to maintain 24V. Then is it necessary to have a regulator?

"One less component, one less problem". Is this true in this case?

DF96 · 7th March 2011, 10:54 AM

What does the device expect? How well does it tolerate changes? How stable is your mains voltage?

Sunsun22 · 7th March 2011, 11:47 AM

I don't know what my device (phono amp) expects because it is not my girl friend! I don't know either how much it will tolerate..... but you throw in a good question

How stable is the main voltage?

My main voltage floats between 215V and 232V therefore it is good reason to have a regulator. Thanks

Correction - my constant current draw is 200mA, not 280mA.

7th March 2011, 06:04 AM	#1
Sunsun22 diyAudio Member Join Date: Jul 2004 Location: Hong Kong	Do I still need a regulator for constant current draw? I am preparing a LCRC PSU for a 24V 280mA constant current draw device. Since it is constant current, it means I can calculate the R value to maintain 24V. Then is it necessary to have a regulator? "One less component, one less problem". Is this true in this case?

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7th March 2011, 10:54 AM	#2
DF96 diyAudio Member Join Date: May 2007	What does the device expect? How well does it tolerate changes? How stable is your mains voltage?

7th March 2011, 11:47 AM	#3
Sunsun22 diyAudio Member Join Date: Jul 2004 Location: Hong Kong	I don't know what my device (phono amp) expects because it is not my girl friend! I don't know either how much it will tolerate..... but you throw in a good question How stable is the main voltage? My main voltage floats between 215V and 232V therefore it is good reason to have a regulator. Thanks Correction - my constant current draw is 200mA, not 280mA.

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