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公开(公告)号：US4160235A
公开(公告)日：1979-07-03
申请号：US841312
申请日：1977-10-11
申请人： Gerhard Krumrein
发明人： Gerhard Krumrein
IPC分类号： H03K3/0231 , B60Q1/46 , H03K1/08
CPC分类号： H03K3/0231
摘要： A pulse generator comprises a comparator to the inputs of which are connected a capacitor chargeable by a power source and a voltage divider respectively, two transistors being connected to the output of the comparator, one to set the voltage ratio of the voltage divider and one to provide a discharge path for the capacitor and two additional transistors being selectively connected to the comparator output, one providing a different voltage ratio of the voltage divider and the other providing an independent discharge path for the capacitor.
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公开(公告)号：US4589049A
公开(公告)日：1986-05-13
申请号：US660314
申请日：1984-10-12
申请人： Gerhard Krumrein
发明人： Gerhard Krumrein
CPC分类号： H02H9/041
摘要： A protection circuit for an integrated circuit that is connected across a power source includes a first transistor and a zener diode or equivalent circuit arrangement for causing the first transistor to conduct if the integrated circuit receives an excessive voltage from the power source. A measuring resistor is connected to the emitter of the first transistor, and a voltage drop appears across the measuring resistor if the first transistor conducts. A comparator is provided to compare the voltage across the measuring resistor to a reference voltage. The output of the comparator drives the base of a second transistor, the emitter of which is connected to the collector of the first transistor and the collector of which is connected to the base of the first transistor. Current through the second transistor renders the first transistor more conductive.
摘要翻译： 用于跨电源连接的集成电路的保护电路包括第一晶体管和齐纳二极管或等效电路装置，用于如果集成电路从电源接收到过大的电压，则使第一晶体管导通。 测量电阻连接到第一晶体管的发射极，如果第一晶体管导通，测量电阻上会出现电压降。 提供比较器来将测量电阻器两端的电压与参考电压进行比较。 比较器的输出驱动第二晶体管的基极，第二晶体管的基极连接到第一晶体管的集电极，其集电极连接到第一晶体管的基极。 通过第二晶体管的电流使得第一晶体管更具导电性。
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公开(公告)号：US4483605A
公开(公告)日：1984-11-20
申请号：US506818
申请日：1983-06-22
申请人： Gerhard Krumrein , Hartmut Hantsch
发明人： Gerhard Krumrein , Hartmut Hantsch
CPC分类号： G03B15/05 , G03B2215/05
摘要： The invention relates to a circuit for a computerized photoflash control which is supplied, preferably with the aid of a photographic element, with a current corresponding to the reflected light during the flash, from which an electrical quantity terminating the flash is derived. The invention consists in that the circuit contains a comparator, with a voltage derived from the current supplied at one of its inputs, while the other input of the comparator is supplied with an adjustable reference voltage. Connected to the output of the comparator is a switching path which is actuated by the comparator upon signal output, thereby terminating the flash.
摘要翻译： 本发明涉及一种用于计算机化闪光灯控制的电路，其优选地借助于照相元件与在闪光期间的反射光相对应的电流被提供，从该光源终止闪光的电量。 本发明在于该电路包含比较器，该比较器具有从其输入端之一提供的电流导出的电压，而比较器的另一个输入端被提供可调参考电压。 连接到比较器的输出端的是一个切换路径，在信号输出时由比较器启动，从而终止闪光。
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公开(公告)号：US3943384A
公开(公告)日：1976-03-09
申请号：US463361
申请日：1974-04-23
申请人： Gerhard Krumrein , Joachim Kuhlmann
发明人： Gerhard Krumrein , Joachim Kuhlmann
摘要： A monostable trigger arrangement comprises a monostable trigger stage controlled by a switch unit which is triggered by a control pulse to release a pulse from the monostable trigger stage and is returned to its untriggered state by an erase signal.
摘要翻译： 单稳态触发装置包括由开关单元控制的单稳态触发级，其由控制脉冲触发，以从单稳态触发级释放脉冲，并通过擦除信号返回到未触发状态。
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公开(公告)号：US4609880A
公开(公告)日：1986-09-02
申请号：US655724
申请日：1984-09-28
摘要： A broad-band amplifier for the amplification of a photoelectric current triggered by a light signal, including a first transistor connected to receive the photoelectric current, a second transistor connected in series with the first one, a resistance connected between the base of the first transistor and the emitter of the second transistor, a third transistor and a fourth transistor which form a current mirror, the third transistor being connected in series with the second transistor, and a resistance located between the third transistor and ground.
摘要翻译： 一种用于放大由光信号触发的光电流的宽带放大器，包括连接以接收光电流的第一晶体管，与第一晶体管串联连接的第二晶体管，连接在第一晶体管的基极之间的电阻 所述第二晶体管的发射极，形成电流镜的第三晶体管和第四晶体管，所述第三晶体管与所述第二晶体管串联连接，以及位于所述第三晶体管和地之间的电阻。
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公开(公告)号：US4504820A
公开(公告)日：1985-03-12
申请号：US373035
申请日：1982-04-28
申请人： Gerhard Krumrein
发明人： Gerhard Krumrein
摘要： A flasher unit is provided with a comparator whose output signal is fed to a pulse generator for producing the flash frequency signal, the comparator being supplied with a reference voltage at one input and a voltage dependent on the current passing through the flasher lamps at the other input and with a switch element which changes the reference voltage in accordance with the comparator output signal such that the comparator produces an output signal for the whole of the light up time of the lamps.
摘要翻译： 闪光器单元设置有比较器，其输出信号被馈送到脉冲发生器以产生闪光频率信号，比较器在一个输入端被提供参考电压，并且取决于通过另一个的闪光灯的电流的电压 并且具有根据比较器输出信号改变参考电压的开关元件，使得比较器产生用于整个灯的点亮时间的输出信号。
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公开(公告)号：US4389597A
公开(公告)日：1983-06-21
申请号：US244257
申请日：1981-03-16
申请人： Gerhard Krumrein
发明人： Gerhard Krumrein
CPC分类号： B60Q1/385
摘要： A circuit for a flasher unit comprises a flasher relay controlled by an astable multivibrator, the multivibrator having an RC-element with an inverter connected in front thereof, the inverter being controlled in response to the switching condition of the flasher relay.
摘要翻译： 用于闪光器单元的电路包括由不稳定的多谐振荡器控制的闪光继电器，多谐振荡器具有连接在其前面的反相器的RC元件，响应于闪光继电器的开关状态来控制反相器。
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