公开(公告)号：US10211036B2

公开(公告)日：2019-02-19

申请号：US15744491

申请日：2016-08-11

Applicant: DENSO CORPORATION ,  SOKEN, INC.

Inventor： Noboru Maeda ,  Koji Ito ,  Kiyokazu Akiyama ,  Masayoshi Satake

IPC: H01J41/12 ,  H01T19/04 ,  F04D33/00 ,  F03G7/06 ,  H01T23/00

Abstract: A jet flow generation device includes: a discharge electrode; a reference electrode that is disposed away from the discharge electrode; a power supply circuit that generates an output voltage to control a potential difference between the discharge electrode and the reference electrode; a controller that switches the output voltage of the power supply circuit between a first voltage that does not induce corona discharge between the discharge electrode and the reference electrode and a second voltage that induces corona discharge between the discharge electrode and the reference electrode; and a case housing at least the reference electrode has an injection port that injects an ion wind of ions generated by the corona discharge.

公开(公告)号：US10356897B2

公开(公告)日：2019-07-16

申请号：US16065140

申请日：2016-11-30

Applicant: DENSO CORPORATION

Inventor： Kiyokazu Akiyama ,  Yasunari Yanagiba

IPC: H05K1/03 ,  H05K1/02 ,  H01L23/66 ,  H05K3/46 ,  H05K1/11

Abstract: A first land and a first ground pattern generate a first parasitic capacitance CLAND by capacitive coupling with a first insulating layer interposed therebetween. Then, the first parasitic capacitance CLAND is defined as a predetermined capacitance that suppresses an impedance of a via part from changing due to a change in an inductance component of the via part with respect to a first transmission line. As a result, it is possible to match the impedance of the via part with a impedance of the first transmission line by adjusting the first parasitic capacitance CLAND caused by the first land and the first ground pattern. Therefore, it is possible to prevent the transmission characteristics of the multilayer substrate from deteriorating without requiring the disposition of cavities such as through holes in the multilayer substrate.

公开(公告)号：US09667149B2

公开(公告)日：2017-05-30

申请号：US14743596

申请日：2015-06-18

Applicant: DENSO CORPORATION

Inventor： Kiyokazu Akiyama ,  Shinji Ohoka ,  Yuuki Takemoto

IPC: H02M1/14 ,  H02M3/28 ,  H02M3/335

CPC classification number: H02M3/285 ,  H02M1/14 ,  H02M3/3353 ,  H02M3/33569

Abstract: An electric power converter apparatus incorporates a plurality of electric power converter circuits having respective output terminals connected in common, with output power being produced from the common output terminals. Each converter circuit uses an identical switching frequency, in executing power conversion based on PWM control of switching by a plurality of switching elements. The switching operations of the respective converter circuits mutually differ in phase, by an amount determined in accordance with the currently applied PWM duty ratio. The phase difference value is predetermined for minimizing the amplitude of specific harmonic frequency components of a ripple current component in the output current from the apparatus.