pwer supply for cip amp

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odysseybmx414

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Joined 2005
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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Gcollier

Member
Joined 2003
odysseybmx414 said:
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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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. :)
 
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carlosfm

Banned
Joined 2003
odysseybmx414 said:
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.
Click to expand...

If you don't want to unwind, then wind some thick, isolated wire on the opposite direction.:idea:
Voltage goes down.
Just a few turns is usually enough to drop some volts.
 
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