Thread: Thandar TG2001
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Old 14th May 2021, 11:00 pm   #9
ortek_service's Avatar
Join Date: May 2018
Location: Northampton, Northamptonshire, UK.
Posts: 629
Default Re: Thandar TG2001

It shouldn't be possible for an LM317 etc, to get hot if just that faulty, as the only high-current path is from input to output - As it's an adjustable regulator, there isn't a ground pin, but an adjust pin connected via a resistor potential-divider to it's output.

So for it to get hot, there must be a fault elsewhere, like a short on it's output.
Note: The metal tab on the TO-220 LM317T is the Output connection, so must be electrically insulated from any heatsink that is grounded.
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