pwer supply for cip amp

odysseybmx414 · 23rd March 2005, 06:42 PM

i have to ask a very important question. i have a +-41VDC power supply on hand its the only one i got that is already in DC volts the maximum rating for supply for the chips i am using (opa541) is +-40VDC. i dont want to ruin any chips so i was wanting to know if there is a way i could get rid of a few volts without doing any unwinding of the transformer.

Gcollier · 23rd March 2005, 06:51 PM

Quote:

Originally posted by odysseybmx414
i have to ask a very important question. i have a +-41VDC power supply on hand its the only one i got that is already in DC volts the maximum rating for supply for the chips i am using (opa541) is +-40VDC. i dont want to ruin any chips so i was wanting to know if there is a way i could get rid of a few volts without doing any unwinding of the transformer.

There are quite a few ways to drop a few volts. You coud use a pair of regulators and drop the voltage into a more suitable range, or even add a few diodes in series on each rail to keep the voltage down just a bit. Personally I'd go for the regulated approach, but thats entirely up to you.

leadbelly · 23rd March 2005, 07:00 PM

Quote:

Originally posted by odysseybmx414
i have a +-41VDC power supply on hand its the only one i got that is already in DC volts the maximum rating for supply for the chips i am using (opa541) is +-40VDC.

1 Volt? Worried about 1 volt? Don't sweat it d00d, yo PS be sweet.

carlosfm · 23rd March 2005, 07:06 PM

Quote:

Originally posted by odysseybmx414
i have to ask a very important question. i have a +-41VDC power supply on hand its the only one i got that is already in DC volts the maximum rating for supply for the chips i am using (opa541) is +-40VDC. i dont want to ruin any chips so i was wanting to know if there is a way i could get rid of a few volts without doing any unwinding of the transformer.

If you don't want to unwind, then wind some thick, isolated wire on the opposite direction.

Voltage goes down.
Just a few turns is usually enough to drop some volts.

odysseybmx414 · 23rd March 2005, 08:12 PM

the thing is its not a toroidal so winding would be complicated

23rd March 2005, 06:42 PM	#1
odysseybmx414 diyAudio Member Join Date: Feb 2005 Location: Watertown, NY	pwer supply for cip amp i have to ask a very important question. i have a +-41VDC power supply on hand its the only one i got that is already in DC volts the maximum rating for supply for the chips i am using (opa541) is +-40VDC. i dont want to ruin any chips so i was wanting to know if there is a way i could get rid of a few volts without doing any unwinding of the transformer.

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23rd March 2005, 08:12 PM	#5
odysseybmx414 diyAudio Member Join Date: Feb 2005 Location: Watertown, NY	the thing is its not a toroidal so winding would be complicated

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