Department of Computer Science
and Electrical Engineering
Low Power 1W Off Line
(240V) Power Supply Options/ Implementation
Wai-Ling
NG
(Miranda)
Abstract:
Most microcontroller-based electronic devices nowadays have some degree
of energy wasted in their "stand-by" mode. Household electrical appliances
in stand-by mode, such as microwaves, washing machines, audio and video
equipments have been estimated to consume about 37 to 50 TWh annually
in the U. S. (Thorne & Suozzo 1998). Although individual loads
of this type are very insignificant, these items are consuming power 24
hr/day and 365 days/year in this idle state. This causes a rise in
electricity bills and excess fuel burnt in power stations.
This thesis aims to minimize the total power consumption (<1W) in an
idle state. This will be evaluated through a number of options in switchmode
technology. Switchmode power supply solutions will be compared to
the existing power supply solutions found in domestic electronic equipments.
conference_paper.pdf
TOP221P from Power Integration, Inc.
Printed Circuit Board Drawings : TOP210
Transformer Datasheet : TOP210
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Last Updated: 18th October 1999