The specs are simple: convert mains voltage to 5 volts ... On the other hand, this was a great introduction to switch-mode power supply designs, and what not to do with our own builds.

He started by using a linear voltage regulator but after a few calculations he discovered that 72% of what he put in was lost to heat. The solution to this is a switched-mode power supply.

DUBLIN--(BUSINESS WIRE)--The "Switching Mode ... power supplies. As the number of electronic devices per household increases, so does the demand for SMPS, which helps regulate voltage and prevent ...