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11. 发明专利

JPS6314588B2 失效
公开(公告)号：JPS6314588B2
公开(公告)日：1988-03-31
申请号：JP9204681
申请日：1981-06-15
申请人： ORIGIN ELECTRIC
发明人： KATO TOYOKAZU , SAITO RYOJI
IPC分类号： H02M3/28

12. 发明专利

JPS61244106A SINE WAVE VOLTAGE GENERATING CIRCUIT 失效
公开(公告)号：JPS61244106A
公开(公告)日：1986-10-30
申请号：JP8617385
申请日：1985-04-22
申请人： ORIGIN ELECTRIC
发明人： SEKINE MASAOKI , SAITO RYOJI
IPC分类号： H03B28/00 , H02M7/48 , H03B27/00 , H03K4/02 , H03K4/501 , H03K4/94
摘要： PURPOSE:To control a reference sine wave voltage easily over a wide range by using a sine wave voltage generating circuit as the reference sine wave voltage generating circuit of a reference wave follow-up type inverter. CONSTITUTION:The 1st and the 2nd DC power sources 1 and 2 which are equal to variable voltage value are connected in series and their connection point is grounded; and positive and negative terminals of the 1st and the 2nd DC power sources 1 and 2 are connected to the input terminal A of an integration circuit 7 through resistances for short-circuit protection and switches 3 and 4 and a low-pass filter 8 is connected to the output terminal B of the integration circuit 7. When the switches 3 and 4 turn on, a positive and a negative voltage EP and EN are impressed to the terminal A from the DC power sources 1 and 2 through the resistances 5 and 6 for short circuit protection and when the switches 3 and 4 turn on at the same time, the terminal is held at a zero potential.

13. 发明专利

JPS61227664A POWER CONVERTER 失效
公开(公告)号：JPS61227664A
公开(公告)日：1986-10-09
申请号：JP6622585
申请日：1985-03-29
申请人： ORIGIN ELECTRIC
发明人： SAITO RYOJI , USHIKI SHUICHI
IPC分类号： H02M1/40 , H02M3/28
摘要： PURPOSE:To prevent a switching semiconductor element from damaging due to the saturation of a transformer by connecting the output of a double voltage rectifying and smoothing circuit connected with the tertiary winding of the transformer with a load through a variable impedance circuit. CONSTITUTION:When operated in a normal state, a variable impedance circuit 8 is driven by a detection drive circuit 7, and an internal impedance in substantially zero. However, when the voltage of a capacitor c3, i.e., the output voltage V0 is remarkably low as compared with the normal state, the voltage VC3 of a capacitor C3 is detected by the circuit 7, the internal impedance of the circuit 8 is varied in response t the voltage to always maintain the VC3 to sufficiently avoid the saturation of a transformer T, thereby continuing the operation in the circuit.

14. 发明专利

JPH10294474A CHARGE STORAGE DIODE 失效
公开(公告)号：JPH10294474A
公开(公告)日：1998-11-04
申请号：JP11427197
申请日：1997-04-16
申请人： ORIGIN ELECTRIC
发明人： SHINOHARA SHINICHI , KOBAYASHI HIDEO , SAITO RYOJI
IPC分类号： H01L29/861
摘要： PROBLEM TO BE SOLVED: To increase a breakdown voltage in inverse direction and to expand its range, by forming a P-type and an N-type regions with a high impurity concentration on a P-type semiconductor substrate with a low impurity concentration, so that the P-type region becomes deeper than the N-type region. SOLUTION: P-type regions 2 and 2' with a high impurity concentration are formed by diffusing a P-type impurity from both main surfaces of a P-type semiconductor substrate 1 with a low impurity concentration. In this case, the P-type region 2 with a high impurity concentration is approximately 100 μm deep and is formed deeply in the P-type semiconductor substrate 1, thus obtaining a desired electric charge accumulation time. Then, by cutting one portion of the P-type region 2' with a high impurity concentration and a P-type semiconductor substrate region 1' by polishing, a substrate region 1" is formed. Further, an N-type impurity is diffused from a main surface that is opposite to the P-type region 2 with a high impurity concentration, thus forming an N-type region 3 with a high impurity concentration. In this case, the N-type region 3 with a high impurity concentration is formed shallower than the P-type region 2 with a high impurity concentration being formed at least at the opposite surface side.

15. 发明专利

JPH05236749A 失效
公开(公告)号：JPH05236749A
公开(公告)日：1993-09-10
申请号：JP7349992
申请日：1992-02-24
申请人： ORIGIN ELECTRIC
发明人： TERAMOTO SUSUMU , SEKINE MASAOKI , SAITO RYOJI
IPC分类号： H02M3/28 , H02M7/06 , H02M7/12
摘要： PURPOSE:To increase the power factor of an AC/DC converter which generates a DC output upon receiving commercial AC power. CONSTITUTION:In the title AC/DC converter the main circuit of which is constituted of a rectifier circuit RC1, a field effect transistor Q1, a transformer Tr1, and rectifier circuit RC2, a choke coil Ll and a diode D1 are connected between the circuit RC1 and a capacitor C1 and a capacitor C3 is connected between the connecting point of the coil L1 and diode D1 and the connecting point of the transistor Q1 and the primary winding n1 of the transformer Tr1. In addition, the input power factor of the AC/DC converter is further improved by making a control circuit U1 stabilize the output voltage of the converter by making time ratio control on the output voltage with a signal obtained through a detection/comparator circuit DET1 and phase control by using the output voltage of the circuit RC1.

16. 发明专利

JPH0435986B2 失效
公开(公告)号：JPH0435986B2
公开(公告)日：1992-06-12
申请号：JP19207283
申请日：1983-10-14
申请人： ORIGIN ELECTRIC
发明人： SAITO RYOJI , SUZUKI YOSHIO , SENOO KAZUHIRO
IPC分类号： H02M3/155 , H02M3/10

17. 发明专利

JPH04165956A RESONANT CONVERTER 失效
公开(公告)号：JPH04165956A
公开(公告)日：1992-06-11
申请号：JP29021690
申请日：1990-10-26
申请人： ORIGIN ELECTRIC
发明人： SUZUKI YOSHIO , SAITO RYOJI
IPC分类号： H02M3/28
摘要： PURPOSE:To prevent parasitic resonance between the junction capacitance of a rectifying diode and a resonant inductance by connecting a nonlinear inductor, exhibiting an inductance several times as high as the resonant inductance when the rectifying diode is not conducting, in series with the rectifying diode. CONSTITUTION:During an interval when the junction capacitance of a rectifying diode 5 contributes to parasitic oscillation, i.e., an interval when a rectifying diode 5 is not conducting, oscillation is induced with the junction capacitance of the rectifying diode 5 and the sum of the inductance in unsaturated region of a nonlinear inductor 10 and the inductances of primary and secondary resonant inductors 9, 9'. At that time, the inductance in unsaturated region of the nonlinear inductor 10 is selected so that the period of oscillation is substantially same as the maximum conduction width of a switching element 1 thus realizing a resonance circuit in which the rectifying diode 5 is conducted or nonconducted with zero voltage. According to the constitution, output control is carried out stably.

18. 发明专利

JPH01252174A RECTIFIER 失效
公开(公告)号：JPH01252174A
公开(公告)日：1989-10-06
申请号：JP3064089
申请日：1989-02-09
申请人： ORIGIN ELECTRIC
发明人： SAITO RYOJI , SUZUKI YOSHIO , SENOO KAZUHIRO
IPC分类号： H02M7/155 , H02M3/28 , H02M7/06 , H02M7/12 , H02M7/162 , H02M7/219 , H02M7/493
摘要： PURPOSE:To reduce harmonic components by controlling the 'ON' period of each switching element through a specified method so that polyphase AC input currents flow in a sinusoidal waveform. CONSTITUTION:A main circuit of a rectifier is composed of inductors Lu-Lw connected in series with each line of respective phase U-W of a three-phase AC input, capacitors Cu-Cw between phases, rectifier circuits Rec 1-3, conversion sections G1-3 consisting of a pair of switching transistors(Tr) Q1-Q1' and a transformer T and the like, rectifiers D9-D9'' for each conversion section G, a capacitor C3 forming a smoothing circuit, etc., and a load F is connected at an output end of the main circuit. In the rectifier, the Trs Q1-Q1' are switched by conversion frequency higher than the frequency of polyphase ACs so that the smoothing circuit need not be provided between said rectifier circuits Rec and the conversion sections G. Accordingly, the harmonic components of the input currents is reduced while a stabilized DC output having a low ripple component can be acquired.

19. 发明专利

JPS62137918A DRIVE CIRCUIT OF SEMICONDUCTOR SWITCHING ELEMENT 失效
公开(公告)号：JPS62137918A
公开(公告)日：1987-06-20
申请号：JP27978585
申请日：1985-12-12
申请人： ORIGIN ELECTRIC
发明人： USHIKI SHUICHI , SAITO RYOJI
IPC分类号： H03K17/73 , H03K17/732
摘要： PURPOSE:To obtain the drive characteristic with high efficiency and high speed by supplying the energy required for turning-off of a semiconductor switching element from a main current path of the semiconductor switching element so as to eliminate the need for a large reverse bias current source. CONSTITUTION:When a drive transformer 15 is saturated after the semiconductor switching element 1 reaches the ON-state completely, a winding N2 is short- circuited and a forward gate current is not supplied. In this case, the short- circuit between the gate and cathode of the element 1 is prevented by the forward voltage drop of diodes 29, 30. When the switch element 3 is closed and the switch element 2 is opened, a voltage taking a mark . as the negative pole is generated in the winding N3, the voltage biases the forward voltage of the diodes 29, 30 to constitute the reverse gate current path, through which the reverse gate current is supplied. In this case, since all the currents supplied from the winding N2 are fed to the gate of the element 1, the efficiency is high.

20. 发明专利

JPS61285071A DC/DC CONVERTER 失效
公开(公告)号：JPS61285071A
公开(公告)日：1986-12-15
申请号：JP12589485
申请日：1985-06-10
申请人： ORIGIN ELECTRIC
发明人： SEKINE MASAOKI , SAITO RYOJI
IPC分类号： H02M3/28 , H02H3/36 , H02J1/10 , H02M3/335
摘要： PURPOSE:To disconnect DC/DC converter units from a parallel operation by comparing the average value of the sum of the currents of switching elements with a current reference signal at every converter unit to judge the unit as a defect with a simple structure. CONSTITUTION:The currents of transistors 1, 1' are detected by current transformers 12, 12', capacitors C2, C2' are charged by currents converted by converters 13, 13' into current sources 14, 14', compared by comparators 24, 24' with a current reference signal, and controlled to turn the transistors 1, 1' to OFF when the currents coincide with the reference signal. When the difference from the reference signal continues for the prescribed time, a malfunction signal is applied to a controller 20, a converter is stopped, and a trip coil 21 is driven to break an input breaker 22.

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