A magnetic coupled charger with no-load protection

A novel magnetic coupled charger is proposed, that is suitable for small electric devices. In this charger, standby power is reduced for energy saving. Eddy current heating in metal placed near it, is reduced by using a feedback transformer. In this circuit, a power factor correction is also realize...

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Bibliographic Details
Published in:IEEE transactions on magnetics 1998-07, Vol.34 (4), p.2057-2059
Main Authors: Sakamoto, H., Harada, K., Abe, H., Tokuomi, S.
Format: Article
Language:English
Subjects:
Applied sciences
Coupling circuits
Direct energy conversion and energy accumulation
Eddy currents
Electrical engineering. Electrical power engineering
Electrical power engineering
Exact sciences and technology
Magnetic devices
Miscellaneous
MOSFET circuits
Other topics in electronics, radiowave and microwave technology, and direct energy conversion and storage
Power factor correction
Power MOSFET
Protection
Threshold voltage
Voltage control
Voltage-controlled oscillators
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Description
Summary:A novel magnetic coupled charger is proposed, that is suitable for small electric devices. In this charger, standby power is reduced for energy saving. Eddy current heating in metal placed near it, is reduced by using a feedback transformer. In this circuit, a power factor correction is also realized to be 99%.
ISSN:0018-9464
1941-0069
DOI:10.1109/20.706793