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Patent Searching and Data


Title:
CONTROL CIRCUIT, CONTROL DEVICE, AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/002233
Kind Code:
A1
Abstract:
This control circuit is provided with: a voltage output circuit control unit which controls a voltage output circuit so as to apply a voltage corresponding to a second control signal across an electrostatic transducer when a first control signal is at a first level, and so as to stop the voltage output circuit when the first control signal is at a second level; a voltage clamp unit which outputs a clamp voltage obtained by clamping a voltage across the terminals of the electrostatic transducer to a first threshold voltage or lower; and a control signal output unit which, when the clamp voltage is lower than or equal to a second threshold voltage, outputs the first control signal of the second level and which, when the second control signal is higher than a third threshold voltage, outputs the first control signal of the first level.

Inventors:
HAYASHI MASAAKI (JP)
SAITO KAZUHIKO (JP)
HARA HIROKI (JP)
MURASE TAKANORI (JP)
Application Number:
JP2020/024366
Publication Date:
January 07, 2021
Filing Date:
June 22, 2020
Export Citation:
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Assignee:
SHINDENGEN ELECTRIC MFG (JP)
SUMITOMO RIKO CO LTD (JP)
International Classes:
H04R3/00; H02M7/48; H04R29/00
Foreign References:
JP2006121202A2006-05-11
JP2013046385A2013-03-04
US20160173994A12016-06-16
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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