Dissection – Part 2
Disclaimer: Power supplies can have dangerous voltages inside them even after being unplugged, DO NOT OPEN POWER SUPPLIES. It’s just not a good idea. Opening a power supply and poking around inside could very well kill you. Don’t try this at home. Don’t try this at work. Just don’t do it.
A secondary side overview:
The rack of polymer capacitors just after the transformer helps explain the low ripple, especially being followed by a pair of big fat Nippen Chemi-Con electrolytics. The 5V and 3.3V DC-DC boards get some polymers as well.
12V gets four (two per heatsink) of these FB3206G MOSFETs for rectification, I cannot find any specs on them.
5V and 3.3V DC-DC boards have three MOSFETs each, I can’t read the numbers off ’em.
Protections by PS231. The -12V rail gets its own DC-DC board too, Enermax went hard core on this PSU (excluding the transient filter of course).
On the back of the modular connector board we find good soldering and a pair of capacitors:
The soldering on the rest of the PSU is disappointing. Here’s an overview:
There isn’t anything dangerous, but there are a fair number of spots with too much solder or sloppily applied solder. We do see three 12V current sense resistors though, that’s a nice plus.
Bit too much solder there, don’t you think?
Those two spots are just weird.
Again, there aren’t any actual problems with the solder, it’s just not very neatly done.
All told, the interior isn’t as impressive as the performance.
