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公开(公告)号：EP0031283A3
公开(公告)日：1981-10-07
申请号：EP80401811
申请日：1980-12-17
CPC分类号： H05K1/167 , H01L23/647 , H01L27/016 , H01L2924/0002 , H01L2924/3011 , H05K2201/0317 , H05K2201/10045 , H01L2924/00
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2.发明公开A protection clamp circuit for use in a monolithic circuit which inhibits current transients 失效用于阻止当前瞬态的单片电路中使用的保护钳位电路
公开(公告)号：EP0149065A3
公开(公告)日：1987-08-05
申请号：EP84114209
申请日：1984-11-24
申请人： MOTOROLA, INC.
CPC分类号： H01L27/0248 , H01L27/0755 , H03K17/08126
摘要： First and second Schottky diodes are formed in a respective first and second isolated epitaxial (epi) regions of a monolithic integrated circuit to inhibit current spikes that may otherwise occur as the monolithic circuit is inserted or removed from a "hot" socket having both an input signal and an operating potential supplied thereto. The monolithic circuit includes a floating resistor formed in a first isolated epi region which is connected between the input of the monolithic circuit to which the input signal is supplied and the base of a transistor. The transistor is formed in a third epi region which is isolated from both the first and second epi regions. The second epi region, which may contain one or more circuit elements, is contacted to the operating potential. The Schottky diodes provide clamping across the base-emitter junctions of two parasitic transistors which form a SCR that can be rendered conductive by the substrate not being grounded. The SCR is inhibited from being turned on by the two Schottky clamping diodes.
摘要翻译： 第一和第二肖特基二极管形成在单片集成电路的相应的第一和第二隔离外延（epi）区域中，以抑制电流尖峰，否则当单片电路从具有输入 信号和工作电位。 单片电路包括形成在第一隔离外延区域中的浮动电阻器，其连接在被提供输入信号的单片电路的输入端和晶体管基极之间。 晶体管形成在与第一和第二外延区域隔离的第三外围区域中。 可以包含一个或多个电路元件的第二外延区域与工作电位接触。 肖特基二极管在两个寄生晶体管的基极 - 发射极结之间提供钳位，这两个寄生晶体管形成可通过衬底不接地的导电性的SCR。 两个肖特基钳位二极管禁止SCR导通。
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公开(公告)号：EP0150911A3
公开(公告)日：1985-08-28
申请号：EP85300085
申请日：1985-01-07
IPC分类号： H02H09/02 , H02H03/087
摘要： © An intrinsically safe battery pack arrangement for electrically powering electrical devices is disclosed. The power pack has a device for electronically determining a short in a cable or device and switching off the voltage to the power pack. The electronic device includes a transisterized circuit for sensing and controlling currentthrough the cable. When the currentex- ceeds a predetermined maximum, the circuit limits the current in the cable to a maximum value. The circuit is latched in the off position when the short is present for an extended time and the circuit may be reset after the short is removed and the problem corrected. This form of circuitry in power packs for use with mining equipment such as lamps, provides a unit which will not cause hazardous sparks when shorted thereby constituting an intrinsically safe device for use in mines.
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公开(公告)号：EP0150502A3
公开(公告)日：1986-07-16
申请号：EP84116362
申请日：1984-12-27
发明人： Rathmann, Klaus
CPC分类号： B60H1/00857 , G05D3/1481 , H02H7/093
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5.发明公开
公开(公告)号：EP0089049A3
公开(公告)日：1984-07-18
申请号：EP83102503
申请日：1983-03-14
IPC分类号： H02H09/02
CPC分类号： H02H9/001
摘要： Die Erfindung betrifft eine Anordnung zum Unterdrüc ken von Einschaltstromspitzen in einem Versorgungsnetz, welches über eine erste Gleichrichteranordnung (1′) und einen Gleichspannungsleiter (7) mit einem Verbraucher verbunden ist. Der Gleichspannungsleiter ist über einen Ladezweig, welcher einen Ohmschen Widerstand (3) auf weist, und über einen Entladezweig, welcher eine zweite Gleichrichteranordnung (4) aufweist, mit einem Energiespei cher (2) verbunden. Beim Einschalten des Verbrauchers wird der Energiespeicher (2) über den Ladezweig aufgeladen. Im ungestörten Betrieb wird der Energiespeicher (2) nicht entladen. Sobald die Eingangsspannung am Gleichrichter (1′) unterbrochen wird, wird dem Energiespeicher (2) über die Diode (4) Strom entnommen, da die Spannung am Verbraucher kleiner wird wie die Spannung am Energiespei cher (2). Wenn die Eingangsspannung wieder anliegt, wird der Energiespeicher sanft aufgeladen.
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公开(公告)号：EP0167884A3
公开(公告)日：1987-08-05
申请号：EP85107489
申请日：1985-06-18
CPC分类号： H02H3/087 , G01R1/36 , G05F1/573 , H02H1/0007
摘要： The voltage drop at the terminals of a measuring resistor (3) connected in series in the outlet current path (2) of a DC supply unit controls a threshold value circuit (7, 13) operable to disconnect the supply unit when the current flowing through the resistor (3) exceeds a certain value. The measuring resistor comprises a parasitic resistance represented by a section of the output current path. In the case of the supply unit being at least partially formed as a printed circuit, the measuring resistance (3) preferably comprises a section of a conductor path.
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公开(公告)号：EP0167172A3
公开(公告)日：1987-07-22
申请号：EP85108366
申请日：1985-07-05
申请人： FUJITSU LIMITED
发明人： Sato, Kazuhiro , Mori, Hiroyoshi
IPC分类号： H02H09/02 , H02H03/087
CPC分类号： H02H9/02
摘要： An overcurrent protection circuit including a first transistor (Q 1 ), a second transistor (Q 2 ), and an integrator (R B , C B ). The first transistor (Q 1 ) operates to control a current flow from a power source to a load (11). The second transistor (0 2 ) is turned on when an overcurrent flows through tne first transistor (Q 1 ). The overcurrent is detected by watching the collector-emitter voltage of the first transistor (Q 1 ). Thus, the second transistor (Q 2 ) operates to bypass the base current to be supplied to the first transistor (Q 1 ) with a certain delay time defined by a delay part, which enables an instantaneous overcurrent to be ignored.
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公开(公告)号：EP0107359A3
公开(公告)日：1984-07-18
申请号：EP83305693
申请日：1983-09-23
CPC分类号： H02H9/028
摘要： An alternating current limiting type semiconductor current circuit breaker for a transmission or distribution line system comprises: a first circuit formed of a transformer or reactor (1) and a capacitor or capacitors (2, 20) which provide a series resonant circuit during steady-state operation of the line system, a second circuit connected in series with the secondary winding side of the transformer and formed by a resistor (4) and a nonlinear resistance element (30), a third circuit connected in parallel with said first circuit and formed by a series connection of a reactor (5) and resistor (6), and a semiconductor switchin device (7) connected in series with the parallel connection of said first and third circuits. The nonlinear solid-state resistance element (30) is a zinc oxide nonlinear type resistance element the resistance of which is lowered upon occurrence of an earth fault or the like to provide for an increase in the combined impedance of the parallel connection of said first and third circuits for limiting the overcurrent flowing through the current circuit breaker.
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