I have a 19.5V 11.8A 230W laptop/touchscreen desktop PSU. It's for HP machines but is branded Bestec, and seems to be the same one as Dell PA-19.

I'd like to use it for a project that requires 24.0V, so I'd like to modify the PSU's voltage divider according to [url]https://polonai.se/smps/tosh/[/url] and [url]https://hackaday.io/project/3469-modifying-a-notebook-power-supply[/url]

The output caps are rated at 25V, so I'll be close, but not over their limit.

I've identified the opamp/comparator and voltage reference as ST's TSM103 in red, and pin 2 is...

Re: New Members - please post your introductions here

Hello! Just joined to ask a few questions on modifying a laptop PSU to a higher voltage. 19.5V to 24.0V