Question on choke

BHD · 11th June 2009, 03:09 PM

This may be a dumb question, but if I'm using a choke that's rated at 150mA at 600VDC, can I uprate the amperage if the voltage I'm using on the power supply is significantly less, say 400VDC?

Thanks for any help.

sawreyrw · 11th June 2009, 03:20 PM

No, the current rating of a choke is normally determined by the point (current) that causes the choke to saturate beyond some percent (maybe, 80) of nominal. I^2R also needs to be considered.

BHD · 11th June 2009, 03:45 PM

Thank you for the quick reply, sir.

11th June 2009, 03:09 PM	#1
BHD diyAudio Member Join Date: Jun 2004 Location: Brooklyn Park, MN	Question on choke This may be a dumb question, but if I'm using a choke that's rated at 150mA at 600VDC, can I uprate the amperage if the voltage I'm using on the power supply is significantly less, say 400VDC? Thanks for any help. __________________ My religion is the golden rule. The only time it's forsaken me is when I've forsaken it first.

11th June 2009, 03:45 PM	#3
BHD diyAudio Member Join Date: Jun 2004 Location: Brooklyn Park, MN	Thank you for the quick reply, sir. __________________ My religion is the golden rule. The only time it's forsaken me is when I've forsaken it first.

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11th June 2009, 03:20 PM	#2
sawreyrw diyAudio Member Join Date: Apr 2006 Location: Minnesota	No, the current rating of a choke is normally determined by the point (current) that causes the choke to saturate beyond some percent (maybe, 80) of nominal. I^2R also needs to be considered.

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