General > General Technical Chat

Sony APS-211 42V power supply

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Little-Sparky:
I'm trying to increase output voltage on this apparatus/device. I would like to increase it to 53.5 volts so I can run a 4pill LD mosfet amp by DXworld. Any advice, looking for a Variable resistor to adjust like on most little power supplies. or is it more complicated like removing a resistor with a lower ohm rating? Any ideas. GaryLordsWay@aol.com thanks Gary.

DavidAlfa:
Tweaking the feedback circuitry will probably do that, but we can't magically guess how!
How about some pictures?

Little-Sparky:
I think I have it figured out I have tow options and one is to trick the IC return signal and make it think it is low and have it increase out put voltage by trickery or use a DC/DC buck converter circuit to get my voltage up to where I need it to run my device I am building to run on the power supply. But I do have a way to get what I need done figured out.

tom66:
Increasing the output voltage will be more practical than building a boost converter, assuming you need the 1500 - 3000W or so that this power supply is capable of providing (highest power output available if the input voltage is >200Vac).

NiHaoMike:
Can also consider adding a 12V server PSU in series with the output, will probably work better than trying to change the output voltage by a fairly large amount.

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