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Title:
POWER CONSUMPTION MEASUREMENT APPARATUS, POWER CONSUMPTION CALCULATION METHOD, POWER CONSUMPTION CALCULATION APPARATUS, SWITCHING MODE POWER SUPPLY
Document Type and Number:
Japanese Patent JP3947139
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To measure and display actual power consumption of electric equipment currently used.
SOLUTION: A measurement apparatus is provided with a rectifying means 300 for rectifying and smoothing an input AC voltage, a voltage transforming means 303 supplied with a voltage from the rectifying means and generating a predetermined voltage on a secondary side by turning on and off a current in a primary winding, a switching means 301 for turning on and off a primary output voltage of the voltage transforming means by a pulse width modulation control signal, a voltage regulating means 304 for regulating the primary voltage of the voltage transforming means so as to calculate a turn-on time of the switching means and a controlling means 305 for calculating the turn-on time of the switching means based on an output from the voltage regulating means and measuring the power consumption based on the calculated turn-on time, a switching frequency and an inductance of the voltage transforming means.


Inventors:
Choi
Application Number:
JP2003285696A
Publication Date:
July 18, 2007
Filing Date:
August 04, 2003
Export Citation:
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Assignee:
Samsung Electronics Co.,Ltd.
International Classes:
G01R21/127; H04N5/63; G01R21/06; H02M3/28; (IPC1-7): G01R21/127; G01R21/06; H02M3/28
Domestic Patent References:
JP3060374A
JP10042569A
JP2000341950A
Foreign References:
US6381151
Attorney, Agent or Firm:
Miaki Kametani
Tetsuo Kanamoto