|
|
Power
Supplies: UPS
|
Basic UPS: |
|
Build a UPS for USB devices: 04/11/2002 EDN -
Design Ideas / Portable systems often include
circuitry that derives power from an external
source, such as USB. When the system disconnects
from the USB supply, a battery takes over and
supplies current via a dc/dc converter. A diode-OR
connection |
|
|
|
