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1. 发明专利

JPS57124962A Current supply circuit 失效
标题翻译：电流供电电路
公开(公告)号：JPS57124962A
公开(公告)日：1982-08-04
申请号：JP1024481
申请日：1981-01-28
申请人： Hitachi Ltd , Nippon Telegr & Teleph Corp
发明人： TOKUNAGA MICHIO , KITANO JIYUNJIROU , SAGAWA AKIO , HAYASHI TOSHIO , HAMASATO KAZUO
IPC分类号： G05F1/56 , H04M19/00
CPC分类号： H04M19/00 , Y02D70/00
摘要： PURPOSE:To decrease the power consumption of a current supply circuit, by converting the output voltage of a DC-DC conversion circuit into a voltage between a sum of a voltage drop across a load resistor plus a specified value of an operating voltage of a DC power supply circuit, and a power supply voltage, through the use of the DC-DC conversion circuit. CONSTITUTION:When a current Is proportional to a load current flows to a comparison terminal of an error amplifier COMP, an output voltage VOUT of a DC-DC converting circuit 9 changed depending on the current Is, and when the current Is increases, the voltage VOUT is decreased, while the current Is decreases, the voltage VOUT is increased. In this operation, when an output voltage of the circuit 9 is between a sum of a specified value of the operating voltage of a DC supply circuit 8 plus a voltage drop across a load resistor, and a power supply voltage VBB, the power consumption of a current supply circuit 6 is reduced.
摘要翻译：目的：为了降低电源电路的功耗，通过将DC-DC转换电路的输出电压转换为负载电阻之间的电压降和DC的工作电压的指定值之和之间的电压电源电路和电源电压，通过使用DC-DC转换电路。构成：当与负载电流成比例的电流流向误差放大器COMP的比较端时，DC-DC转换电路9的输出电压VOUT根据电流Is而变化，并且当电流Is增加时， VOUT减小，而电流Is降低，电压VOUT增加。在这种操作中，当电路9的输出电压在直流电源电路8的工作电压的指定值加上负载电阻器两端的电压降的和之和和电源电压VBB之间时，功率消耗电流供给电路6减少。

2. 发明专利

JPS5758405A Semiconductor electric circuit 失效
标题翻译：半导体电路
公开(公告)号：JPS5758405A
公开(公告)日：1982-04-08
申请号：JP13294680
申请日：1980-09-26
申请人： Hitachi Ltd , Nippon Telegr & Teleph Corp
发明人： SUZUKI MASAYOSHI , SAGAWA AKIO , KITANO JIYUNJIROU , HAYASHI TOSHIO
IPC分类号： H03F3/343 , H03F3/34 , H03F3/347
摘要： PURPOSE: To reduce error of a constant current output, by setting the voltage operating point of a current setting transistor to a region where a collector current is constant.
CONSTITUTION: A means 20 having a constant voltage characteristics is connected to base and collector of a current setting transistor 10, a voltage between th collector and emitter at setting is increased, and th nonlinear effect can be reduced. A voltage between the collector and emitter of the transistor 10 is increased by a voltage of a means 20 having the constant voltage characteristics, and the operating point is as shown in point (c), the voltage between the collector and emitter can be increased as VB3, and the constant current region of the transistor can be utilized, and the output current characteristics can be improved. As the means 20 of the constant voltage characteristics, battery, constant voltage diode and diode forward series connection can be used.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：通过将电流设定晶体管的电压工作点设置为集电极电流恒定的区域，以减少恒定电流输出的误差。构成：具有恒定电压特性的装置20连接到电流设定晶体管10的基极和集电极，设定时集电极和发射极之间的电压增加，并且可以减小非线性效应。晶体管10的集电极和发射极之间的电压通过具有恒定电压特性的装置20的电压而增加，并且工作点如点（c）所示，集电极和发射极之间的电压可以增加为 VB3，并且可以利用晶体管的恒定电流区域，并且可以提高输出电流特性。作为恒压特性的手段20，可以使用电池，恒压二极管和二极管正向串联连接。

3. 发明专利

JPS57125421A Current supply circuit 失效
标题翻译：电流供电电路
公开(公告)号：JPS57125421A
公开(公告)日：1982-08-04
申请号：JP1024681
申请日：1981-01-28
申请人： Hitachi Ltd , Nippon Telegr & Teleph Corp
发明人： TOKUNAGA MICHIO , KITANO JIYUNJIROU , SAGAWA AKIO , HAYASHI TOSHIO , HAMASATO KAZUO
IPC分类号： H04M19/00 , H02M3/00
CPC分类号： H02M3/00
摘要： PURPOSE:To reduce the power consumption, by detecting a load voltage and by controlling the output voltage of a DC/DC converting circuit so that an ineffective voltage drop of a DC feeding circuit is lowered. CONSTITUTION:A current IS proportional to the load voltage is flowed from a load voltage detecting circuit 7 to the comparison side terminal of a differential amplifier COMP. Since the potential difference between the comparison side terminal and the reference side terminal of the amplifier COMP is O approximately in the balance state, an output voltage VOUT of a DC/DC converting circuit 9 is equal to RREF+RIS (VREF is a reference voltage and R is the resistance value of a resistance R. Therefore, such automatic control is possible that the voltage VOUT is lowered when the load voltage is reduced. Meanwhile, a DC feeding circuit 8 has independent equivalent internal resistance and power source, and a minimum operating voltage VCEM and the voltage VOUT have relation VOUT>=VL+VCEM (VL is a load voltage). Consequently, the voltage VOUT is controlled to lower an ineffective voltage drop of the circuit 8.
摘要翻译：目的：降低功耗，通过检测负载电压和控制DC / DC转换电路的输出电压，降低直流供电电路的无效电压降。构成：与负载电压成比例的电流IS从负载电压检测电路7流向差分放大器COMP的比较侧端子。由于放大器COMP的比较侧端子和参考侧端子之间的电位差大致处于平衡状态，所以DC / DC转换电路9的输出电压VOUT等于RREF + RIS（VREF是参考电压 R为电阻R的电阻值，因此能够在负载电压降低时电压VOUT降低的同时，具有独立的等效内部电阻和功率源的最小值工作电压VCEM和电压VOUT具有关系VOUT> = VL + VCEM（VL是负载电压），因此电压VOUT被控制以降低电路8的无效电压降。

4. 发明专利

JPH03163333A SYNCHRONIZED-MAGNETIC-DOMAIN OBSERVING APPARATUS 失效
公开(公告)号：JPH03163333A
公开(公告)日：1991-07-15
申请号：JP30218589
申请日：1989-11-22
申请人： HITACHI LTD
发明人： AIHARA MAKOTO , NARUMI SHUNICHI , FUKUI HIROSHI , SAGAWA AKIO , MIYAMOTO NORIFUMI
IPC分类号： G01N21/17 , G01N21/21
摘要： PURPOSE:To make it possible to observe a magnetic domain which is dynami cally fluctuated by synchronizing light which is projected on a magnetic film with a magnetic field which excites the magnetic film. CONSTITUTION:Laser light is guided to a polarizer 6 through a high-speed shutter 16, a total reflection mirror 4 and a semitransparent mirror 5. The laser light which is transformed into a linearly polarized light through the polarizer 6 is inputted into one side of an objective lens 8 which does not include the central axis of the lens 8 from a total reflection mirror 7. Then, the laser light which is inputted into one side of the lens 8 is inputted obliquely on the surface of a sample. The obtained reflected light is inputted into the opposite side of the lens 8 which does not include the central axis. Then, the polarizing front of the laser light which is reflected from the surface of the sample is slightly rotated in response to the magnetizing direction of a magnetic film by the effect of the magnetic force. When the reflected light is observed through an analyzer 10 which is set so as to intersect with the polarizer 6 at a right angle, the structure of the magnetic domain of the surface of the magnetic body is obtained as the light and shade image.

5. 发明专利

JPS6410133B2 失效
公开(公告)号：JPS6410133B2
公开(公告)日：1989-02-21
申请号：JP5982781
申请日：1981-04-22
申请人： HITACHI LTD
发明人： IZAKI NAOYUKI , SAGAWA AKIO , SUZUKI MASAYOSHI
IPC分类号： H03K4/02 , H03K4/00 , H03K4/501

6. 发明专利

JPS6226711B2 失效
公开(公告)号：JPS6226711B2
公开(公告)日：1987-06-10
申请号：JP19862381
申请日：1981-12-11
申请人： HITACHI LTD
发明人： SAGAWA AKIO , SUZUKI MASAYOSHI , IZAKI NAOYUKI
IPC分类号： G01R31/26 , G01R31/30

7. 发明专利

JPS61234120A PULSE GENERATING CIRCUIT 失效
公开(公告)号：JPS61234120A
公开(公告)日：1986-10-18
申请号：JP7428485
申请日：1985-04-10
申请人： HITACHI LTD
发明人： IZAKI NAOYUKI , SUZUKI MASAYOSHI , SAGAWA AKIO
IPC分类号： H03K5/02 , H03K17/60
摘要： PURPOSE:To prevent a flowing-in current at a transient time and eliminate any delay time, by inserting an inductance or resistance between two current sources connected in series and leading out an output terminal from the connecting point of a source DC source with the inductance or resistance. CONSTITUTION:When input signals change their level from '0' to '1', a current source 20 operates and another current source 30 through an inverter 11 stops its operations. An electric current I20 produced at this transient period tends to flow to the current source 30, but is made to flow to a load side having a lower impedance by means of a preventing circuit 16 and raises the potential V0 of the load connected with an output terminal 12 without delay. When the potential V0 becomes VSS (V0=VSS), the potential at both ends of the current source 20 becomes the same and the current source 20 is set to a standby state. When the input signals C are switched to '0' level thereafter, the current source 30 is controlled with a prescribed current value and no transient large current is made to flow and, moreover, since the impedance at the time of operation is higher than the preventing circuit 16, the electric current which is pulled out from the load at the time of discharge can be prevented.

8. 发明专利

JPS5937869B2 JPS5937869B2 - 失效
公开(公告)号：JPS5937869B2
公开(公告)日：1984-09-12
申请号：JP14429576
申请日：1976-12-01
申请人： Hitachi Ltd
发明人： SAGAWA AKIO
IPC分类号： H01L31/111 , H01L29/74 , H01L31/12 , H01L31/16

9. 发明专利

JPS5899769A MEASURING CIRCUIT FOR WITHSTAND VOLTAGE 失效
公开(公告)号：JPS5899769A
公开(公告)日：1983-06-14
申请号：JP19686681
申请日：1981-12-09
申请人： HITACHI LTD
发明人： IZAKI NAOYUKI , SAGAWA AKIO , SUZUKI MASAYOSHI
IPC分类号： G01R31/12
摘要： PURPOSE:To obtain a circuit for measuring withstand voltage which can perform high-speed measurement without false operations, by utilizing effectively the charge and discharge of a capacitor connected in parallel with an equivalent capacitance, and thereby reducing the fluctuation of voltage when a switch is charged. CONSTITUTION:A constant-current circuit 1 is connected to an object 4 to be measured, etc. via a switch circuit 3, etc. The input terminal 5 of a voltage detecting circuit 2 is connected to a line 10 linking the constant-current circuit 1 to switch circuits 3-3''. The switch circuit 3, etc. and input terminals (a), (b) and (c), etc. are each connected to the output of a switching pulse generating circuit 6. In addition, a capacitor 7 of electrostatic capacitance C0 is connected between the line 10 and the ground. This constitution enables the reduction of the fluctuation of a voltage which falls down to ground potential at the time of selection of switches under the effect of suspended capacitance entering the line equivalently, so that the voltage does not fall below a value set by a prescribed value R0 serving as a criterion to determine the appropriateness of insulation resistance and by a constant-current value I0, and thus enables the removal of false operations.

10. 发明专利

JPS5827427A PULSE VOLTAGE GENERATING CIRCUIT 失效
公开(公告)号：JPS5827427A
公开(公告)日：1983-02-18
申请号：JP12481581
申请日：1981-08-11
申请人： HITACHI LTD
发明人： SAGAWA AKIO , SUZUKI MASAYOSHI , IZAKI NAOYUKI
IPC分类号： A61B8/00 , G01N29/04 , H03K5/02 , H03K17/66
摘要： PURPOSE:To obtain a pulse of a high voltage at high speeds without using a high resistor, by switching a current source. CONSTITUTION:When a signal of level ''1'' is given to an input controlling terminal 10, a switch circuit 40 is conductive and a constant current circuit 20 is driven. Since a switch circuit 50 is opened, a constant current circuit 30 is not operated. Thus, the current of the constant current circuit 20 flows to an output terminal 12, and at the saturation state, the voltage at the output terminal 12 becomes almost power supply voltage VSS. On the other hand, when a signal of ''0'' level is given to the input controlling terminal 10, the switch circuit 50 is conductive and the circuit 30 is driven. In this case, since the citcuit 40 is opened, the circuit 20 is inoperative. Thus, the signal at the output terminal 12 is decreased to a low level VDD from the output voltage VSS with the current drawn out from the circuit 30.

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