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Patent Searching and Data


Title:
AUDIO SYSTEM AND POWER SUPPLY CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2018/173220
Kind Code:
A1
Abstract:
A power supply circuit that supplies voltage from a DC power supply to an audio processing device. The power supply circuit comprises: a conversion circuit that converts an AC power supply to the DC power supply; a detection circuit that detects when the AC power supply voltage has been continuously lower than a threshold value for a prescribed time; and a notification circuit that notifies the audio processing device about the voltage drop, if the detection circuit has detected a continuous reduction in the AC power supply voltage.

Inventors:
KATAOKA TAKUYA (JP)
SHIMA HITOSHI (JP)
Application Number:
JP2017/011842
Publication Date:
September 27, 2018
Filing Date:
March 23, 2017
Export Citation:
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Assignee:
YAMAHA CORP (JP)
International Classes:
H03G3/20
Domestic Patent References:
WO2006132202A12006-12-14
Foreign References:
JP2007288995A2007-11-01
JP2009141670A2009-06-25
JP2014007817A2014-01-16
Attorney, Agent or Firm:
OHBAYASHI, Akira et al. (JP)
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