Direct off-line AC regulators are becoming easier and easier to use which raises the possibility to take the AC-DC conversion deeper and deeper into some designs, closer to the point of use of the power.
The lump-in-a-cord PSU is a no-brainer for some jobs, but when that won't cut it, taking the AC power far into your product to a few square inches of off-line converter make a lot of sense compared to building your own multi-level power distribution. The cost of insulation and isolation is not high and all the support parts are available.
Much better in some apps than distributing high DC current busses.
Blog Doing Math in FPGAs Tom Burke 24 comments For a recent project, I explored doing "real" (that is, non-integer) math on a Spartan 3 FPGA. FPGAs, by their nature, do integer math. That is, there's no floating-point ...