Heya EEVBlog!
This is my first post here, and I decided to have it on a piece of kit I acquired today. It's a nice APC brand UPS with a shot battery, with a ton of goodies inside!
Take a look!
Pretty case, quite functional, especially if you have a data connection to it.
Input distribution in the back, what a cool concept! I'm pretty sure this is standard for power bars though, I've just never torn one apart
Also note the ethernet and phone line protection off to the right.
High voltage, watch out! *drool*
Note the lack of gunk to keep the tall components from shaking loose... the big filter cap had nearly fallen off (off to the top right of the image)!
Oh sweet Tesla that's a massive inductor. That will be put to good use if I can't find a battery
Speaking of batteries,
What a piece of shiet! 12V, 7.2 Ah (ok, maybe not a piece of shiet... just broken!) bu CSB Battery.
Quite a pretty wiring job with the spade connectors. Also, loving that high current transistor heat sinkage beside the battery relay!
Front end with some mystery chips! Lets take a look!
Unfortunately, I couldn't read the ST Micro package (gunk and such), but it was obviously some sort of main microcontroller processor for the data I/O in the back, because the other chip is
A Cypress Semi USB controller! Coolio! Loving the front end layout of the board, with the on board replaceable fuses scattered about and such.
Everything else was a little bland, mostly passives and some voltage control circuitry, what one would expect from the power supply with a digital front end.
I learned quite a bit from this in terms of layout and design, as I am an Electrical Engineering student (aspiring in Analog Hardware/Silicon Chip design!), and university is (almost too much) theoretical (which is nice, but being able to play with the real deal is even better!)
I'm hoping you guys enjoyed the very brief look at this piece of office gear, I'm hoping to get into the swing of things again since I just got out of exams and am now on a Co-op term (Woohoo free research time)! If you want to check out more of my stuff, with this teardown in particular, check out
www.codyshaw.ca.
Comments? Questions? Would you like to see more of the UPS? I am willing to take more detailed pictures if anyone wants to see something closer. Have any of you designed something like this before? Is this a nice design, and is there anything that could be improved?
Best,
Cody