The below is an off-site archive of all tweets posted by @mjtsai ever

December 5th, 2011

@grynspan Yeah. Then the next question is why the CyberPower is 1/4 the price of APC. There's got to be a catch.

via Echofon in reply to grynspan

@grynspan But I figure it must be more complicated than that or I would have seen way more written about this problem before.

via Echofon in reply to grynspan

@grynspan What I've read (esp. for Dell XPS but also Macs) is that certain power supplies will instantly shut off with approx sine.

via Echofon in reply to grynspan

@grynspan I've seen mixed reports saying that newer iMacs, Mac Pros, and Mac minis don't work properly with approximated sine wave power.

via Echofon in reply to grynspan

Wondering what the truth is regarding pure sine wave UPSs and Macs.

via Echofon