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Convert 12.4v PSU to Automotive 13.8v Battery Maintainer

artfuldodger

New Member
Hi all,

Looking for some help please, trying to convert a desktop PSU (Aero Cool MX600W) ACP-I600MD from 12.4v output up to a stable 13.8v (ish) so I can use it as a car battery maintainer for ECU programming (13v minimum, 14v maximum). The PSU has no variable resistors, so all the tie downs and fixed, does anyone recognise this board, and or know where to start with identifying the voltage regulator and associated resistor responsible for controlling the output? And if any voltage override control needs similar adjustment?

Any advice much appreciated?

Cheers Steve
 

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sagor1

Active Member
In desktop PSU, it is usually the 3.3V or 5V that is regulated, and the 12V just follows along and can vary a bit. That is, there may not be an individual +12V adjustment.
The 3.3/5V regulation may be based on a voltage reference like the TL431 or perhaps something similar (IC of some sort).
Otherwise, not familiar with that unit or how to change the +12V, sorry.
 

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