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Oldcodger · 12th Jul 2018, 10:26 pm

Biggles- One reason I'd opted for one of the Maplin 2A 7805. I'm using one in my central locking PSU ( CAR nominal 12 dropped to 5v via 7805 and converted to 12v+/- .5 via SMPU chip), and even at .5A this chip remains cool . I'll try one of these in car as a test on DASHCAM, and if getting warm , I'll simply change it for a 7905 ( reversing polarities ,of course) and use a heatsink/ some part of car as heatsink. Thanks for the warning.

12th Jul 2018, 10:26 pm	#13
Oldcodger Nonode Join Date: Oct 2014 Location: West Midlands, UK. Posts: 2,181	Re: 12V to USB convertor. Biggles- One reason I'd opted for one of the Maplin 2A 7805. I'm using one in my central locking PSU ( CAR nominal 12 dropped to 5v via 7805 and converted to 12v+/- .5 via SMPU chip), and even at .5A this chip remains cool . I'll try one of these in car as a test on DASHCAM, and if getting warm , I'll simply change it for a 7905 ( reversing polarities ,of course) and use a heatsink/ some part of car as heatsink. Thanks for the warning.