Mitsubishi Denki Kabushiki Kaisha

Panasonic Corporation

Mitsubishi Electric Corporation

Mitsubishi Jidosha Kogyo Kabushiki Kaisha

Panasonic Intellectual Property Management Co., Ltd.

Jun Yoshida

Junji Morita

Akinori Yukimasa

Kohei Teramoto

Takahisa Aoyagi

Tsuyoshi Nakada

Taizo Nakamura

Fujio Hayakawa

Ikuo Saga

Seiki Suzuki

Hiroaki Fujii

Hisanori Ishino

Ryoichi Hamahashi

A hydrogen generating apparatus includes a reformer generating hydrogen-containing gas through a reforming reaction, a raw material supplier supplying a raw material to the reformer, a reaction gas supplier supplying reaction gas other than the raw material to the reformer, a hydro-desulfurizer removing a sulfur compound in the raw material supplied to the reformer, a recycle flow passage through which part of the hydrogen-containing gas generated by the reformer is supplied to the hydro-desulfurizer, a closing device that closes the recycle flow passage, and a controller that, when stopping operation, closes the closing device and controls the raw material supplier and the reaction gas supplier such that the raw material and the reaction gas are supplied to the reformer, before a temperature of the reformer drops down to a temperature at which deposition of carbon from the raw material on a reformation catalyst disposed inside the reformer is suppressed.

Hydrogen generating apparatus, fuel cell system, and methods of operating them

A complementary pulse width modulation circuit is composed of a signal generating circuitfor generating first and second pulse width modulation signals (PWM#and PWM#) that are complementary to each other from an input signal (IN) in response to a sampling synchronous signal (Sample) generated in synchronization with a clock (CLK); and a signal output circuitfor combining a positive signal and a negative signal of the first pulse width modulation signal (PWM#) generated by the signal generating circuit, and for combining the first pulse width modulation signal (PWM#) combined with the second pulse width modulation signal (PWM#), followed by outputting.

Digital to-analog converter

In order to reduce the possibility of moisture, which has seeped into a door from its lower side, contacting with a speaker and also of air pressure building up behind the speaker and hindering the movement of the diaphragm, a waterproof cover 3 is provided which includes a magnet cover 31 which follows the circumference of a magnet 16, a frame cover 32 which partially overlaps with the magnet cover 31 and follows the circumference of the frame 15 when it is combined with a speaker 2, a first aperture 33 placed between the magnet 16 and the magnet cover 31 and a second aperture 34 placed between the magnet cover 31 and the frame cover 32.

Speaker apparatus and waterproof cover therefor

Growing community of inventors

Hyogo, Japan

Jun Yoshida