[특허]Load drive apparatus including power transistor protection circuit from overcurrent

Load drive apparatus including power transistor protection circuit from overcurrent 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H02H-007/16
출원번호	US-0311938 (1994-09-26)
우선권정보	JP-0240036 (1993-09-27); JP-0296580 (1993-10-20); JP-0296566 (1993-11-26)
발명자 / 주소	Ishikawa Fukuo (Kariya JPX) Konishi Shuuichi (Nagoya JPX) Nakamura Katsumi (Okazaki JPX) Ikemoto Hideyuki (Anjo JPX) Ishida Toshio (Kariya JPX)
출원인 / 주소	Nippondenso Co., Ltd. (Kariya JPX 03) Anden Co., Ltd. (Anjo JPX 03)
인용정보	피인용 횟수 : 24 인용 특허 : 0

초록 ▼

A load drive apparatus is used in a vehicle direction indicating apparatus operable free from overcurrents and overvoltage. The load drive apparatus includes: a charging/recharging capacitor; a charging/recharging circuit for charging/recharging the capacitor at a preselected time constant in such a manner that a voltage across the capacitor is varied between a preset upper limit voltage and a preset lower limit voltage; a drive circuit for turning ON a power transistor series-connected to a current path employed to supply a current from a DC power source to a load, thereby driving the load when the charging/discharging circuit causes the capacitor to be charged, or the voltage across the capacitor is higher than, or equal to a predetermined voltage defined between the upper limit voltage and the lower limit voltage; overcurrent judging means for judging whether or not a voltage across terminals of the power transistor connected to the above-described current path exceed an overcurrent judging voltage.

대표청구항 ▼

A load drive apparatus comprising: a charging/discharging capacitor; a charging/discharging circuit for charging/recharging said capacitor at a predetermined time constant in such a manner that a voltage across said capacitor is varied between a preset upper limit voltage and a preset lower limit voltage; a drive circuit for turning ON a power transistor series-connected to a current path employed to supply a current from a DC power source to a load, thereby driving the load when said charging/discharging circuit causes said capacitor to be charged, or said voltage across said capacitor is higher than, or equal to a predetermined voltage defined between said upper limit voltage and said lower limit voltage; overcurrent judging means for judging whether or not a voltage across terminals of said power transistor connected to said current path exceeds an overcurrent judging voltage; upper limit voltage changing means for changing said upper limit voltage at which said charging/discharging circuit stops the charging operation of said capacitor and starts the discharging operation thereof, into a value normally higher than a drive stopping judgement voltage when said overcurrent judging means judges that said voltage across terminals of said power transistor exceeds said overcurrent judging voltage; and. first drive stopping means for compulsorily turning OFF said power transistor and further for holding said charging/discharging circuit to the charging state of said capacitor by judging whether or not said voltage across said capacitor is higher than, or equal to said drive stopping judgement voltage when said voltage across said capacitor becomes higher than, or equal to said drive stopping judgement voltage.

이 특허를 인용한 특허 (24)

Shoda, Kazuo; Nomura, Yuki; Nagato, Yoshifumi, AC motor driving apparatus and control method.
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Suttie, Peter; Schmidt, Dennis E.; Mehrer, Michael E.; Mack, Tarrence LaMar, Control system for an auxiliary power unit.
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Omori Koji,JPX ; Kataoka Tomohiro,JPX ; Kajitani Kazunori,JPX, DC motor control circuit.
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Baba Akira,JPX, Device and method for supplying electric power to a load.
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Dippold, Gebhart; Fraisse, Stephane; Illing, Robert; Pidutti, Albino, Direction indicator circuit for controlling a direction indicator in a vehicle.
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Ishikawa Fukuo,JPX ; Sugiura Akira,JPX ; Makino Masahisa,JPX ; Ban Hiroyuki,JPX, Load actuation circuit with a surge protecting function.
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Yamamoto, Seiichi; Ota, Takahiro, Load driving device and electrical device using the same.
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Kirlew, Patrick; Cochran, Michael Joseph, Method to decouple battery from high level cranking currents of diesel engines.
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Uchiyama, Yuji, Motor drive circuit.
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Sugiura Akira,JPX ; Ishikawa Fukuo,JPX ; Ban Hiroyuki,JPX, Over-voltage protection apparatus and vehicular direction indicating apparatus with over-voltage protection.
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Yamamoto, Akihisa, Overcurrent protection and masking circuitry for protection against an overcurrent condition.
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Sun, Tuo; Ma, Zhanjie, Pixel compensation circuit, display device and driving method.
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Chen William I. H., Power input protection circuit.
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Watanabe Manabu,JPX, Semiconductor apparatus.
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Koyama, Shinichi; Kusunoki, Takeshi; Zhou, Wei; Suzuki, Hiromasa, Semiconductor device, charge pump circuit, semiconductor system, vehicle, and control method of semiconductor device.
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Fukuda, Yutaka; Okuda, Ryoichi; Makino, Tomoatsu; Yagi, Kenji; Tsuzuki, Yukio, Semiconductor switching element driving circuit.
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Kenji Kouno JP, Surge preventing circuit for an insulated gate type transistor.
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Misdom, Johannes A. C.; Verhees, Johannes L. M.; Hulshof, Jozef J. M.; Van Rens, Frank J. P., Two-terminal switch circuit and voltage threshold responsive circuit component.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
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연합인증

Load drive apparatus including power transistor protection circuit from overcurrent 원문보기

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Load drive apparatus including power transistor protection circuit from overcurrent 원문보기

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이 특허를 인용한 특허 (24)

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