31336haxx0r Posted August 29, 2012 Share Posted August 29, 2012 How much current can the stock 1040ST/STE power supply deliver? Quote Link to comment Share on other sites More sharing options...
31336haxx0r Posted August 30, 2012 Author Share Posted August 30, 2012 According to this site http://www.maedicke.de/atari/hardware/megast.htm it probably puts out 3 amps on the 5V rail and 1 amp on the +12V rail. Excellent! Quote Link to comment Share on other sites More sharing options...
Rybags Posted August 31, 2012 Share Posted August 31, 2012 Mega would almost certainly be different (more) since they were intended for internal expansions. I measured the power use of my 1040ST/FM with a meter, it was somewhere around 20 Watts. Funnily enough an Amiga 500 was less than that. Generally a power supply will be rated over what an idling computer uses by at least a third, so (3x5) + (1x12) = 27 Watts sounds feasible as a minimum estimate for a standard ST. Quote Link to comment Share on other sites More sharing options...
31336haxx0r Posted August 31, 2012 Author Share Posted August 31, 2012 Apparently, the PSU can draw up to 95 Watts from the mains side. If that's really the case, it has an efficiency of a meager 28.4%. Quote Link to comment Share on other sites More sharing options...
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