The Design and Implementation of Zero Standby Power using Fixed-Frequency Flyback Converter

MELVIN VALDEZ

doi:10.35974/isc.v11i5.3629

Authors

MELVIN VALDEZ ADVENTIST UNIVERSITY OF THE PHILIPPINES

https://doi.org/10.35974/isc.v11i5.3629

Keywords:

Standby Power, Zero, Appliances, PIR, Current Sensor

Abstract

A zero standby power used for electric home appliances is presented in this thesis. Household appliances generally require standby power when they are plug-in. In this work, it will minimize the standby power consumption by using fixed- frequency flyback converter technology. The work is composed of designing fixed-frequency flyback controller, designing zero standby power consisting of flyback converter, current sensor, and passive infrared sensor. The fixed-frequency flyback controller is used to control the flyback which supplies the necessary voltage to PIR sensor and current sensor circuit. A PIR sensor circuit detects motion and turned on the AC relay when the user is approaching. A current sensor circuit provides a signal to keep AC relay turned on until the user is finished its work. The zero standby power consumption of the design from low to high line input- 85Vrms to 265Vrms showed that actual measurements are within acceptable values of 70-90mW. The efficiency is also high in the range of 80-95% with load power at 1.5KW.

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