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Patent Searching and Data


Title:
AMPLIFYING DEVICE, AND CONTROLLING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2019/008630
Kind Code:
A1
Abstract:
This amplifying device is provided with: a first amplifier for amplifying an input signal; a voltage limiting circuit for limiting, to a limited range, a voltage of an output signal from the first amplifier; a second amplifier for amplifying an output signal from the voltage limiting circuit; a first control unit for controlling the limited range according to a current supplied to a load from the second amplifier; and a second control unit for reducing the amplification rate of the first amplifier in a state where the voltage limiting circuit limits the voltage of the output signal from the first amplifier.

Inventors:
TOGAWA, Takeshi (Nakazawa-cho Naka-ku, Hamamatsu-sh, Shizuoka 50, 〒4308650, JP)
Application Number:
JP2017/024344
Publication Date:
January 10, 2019
Filing Date:
July 03, 2017
Export Citation:
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Assignee:
YAMAHA CORPORATION (10-1, Nakazawa-cho Naka-ku, Hamamatsu-sh, Shizuoka 50, 〒4308650, JP)
International Classes:
H03G3/30
Foreign References:
JP2004214793A2004-07-29
JP2010130288A2010-06-10
JP2011055032A2011-03-17
JP2009077356A2009-04-09
Attorney, Agent or Firm:
OHBAYASHI, Akira et al. (Ochanomizu Wing Building, 6th Floor 2-15-13 Hongo Bunkyo-k, Tokyo 33, 〒1130033, JP)
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