Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Takahiro Hayakawa

Noboru Katta

Kenichi Noguchi

Satoshi Azuhata

Junichi Matsuda

A power supply device according to the present disclosure includes a first resistor and a second resistor connected in series between an output terminal and a reference potential; a power converter connected to the output terminal and a reference point between the first resistor and the second resistor, configured to supply a first voltage to the output terminal, and configured to control the first voltage to cause a second voltage generated at the reference point, to have a predetermined value; a protective current output circuit configured to output a protective current depending on an output current supplied to the output terminal and a limit current; and a control circuit to which the protective current is input, the control circuit being configured to draw in, from the reference point, a drawn-in current obtained by subtracting the protective current from a set current depending on a set value.

Power supply device and overcurrent protective device

A loudspeaker system capable of simultaneously providing listeners with a listening environment not giving them a feeling of strangeness. The loudspeaker system () comprises drive motors (toto) for so driving at least first R-channel loudspeaker () that the current first listening position is substantially included in the perpendicularly bisecting plane of a line joining the intersecting point of the first R-channel speaker () and its directivity axis and the intersecting point of the second R-channel loudspeaker () and its directivity axis and so driving at least fourth L-channel loudspeaker () that the current second listening point is substantially included in the perpendicularly bisecting plane of the line joining the intersecting point of a third L-channel loudspeaker () and its directivity axis and the intersecting point of a fourth L-channel loudspeaker () and its directivity axis. The loudspeaker system () further comprises their motor driver section ().

Growing community of inventors

Kanagawa-ken, Japan

Takahiro Hayakawa