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1. 发明专利

JPS6116617A Composite switch element 失效
标题翻译：复合开关元件
公开(公告)号：JPS6116617A
公开(公告)日：1986-01-24
申请号：JP13699084
申请日：1984-07-02
申请人： Fuji Electric Co Ltd
发明人： ICHIJIYOU MASAMI
IPC分类号： H03K17/60 , H01L21/331 , H01L21/8222 , H01L27/06 , H01L29/06 , H01L29/73 , H01L29/74 , H03K17/567
CPC分类号： H01L29/0692
摘要： PURPOSE:To process a large current with limited chip size and to reduce the size and cost of the composite switch element by using a bipolar transistor (TR) which has a base electrode surrounded with an emitter electrode as a main control valve. CONSTITUTION:The finely worked electrodes of the bipolar TR1 are so arranged that the base electrode B is surrounded with the emitter electrode E. Consequently, the current in turn-off operation converges on the center part where the emitter electrode E has an intersection; the lateral spread resistance of the base layer is large and the dielectric strength of a safe operation region decreases. The current, however, converges in the turn-on state on an edge part at a roundabout side shown in a figure 1c, and the area of current convergence part in the figure 1a is large as compared with the element having the emitter electrode surrounded with the base electrode.
摘要翻译：目的：处理芯片尺寸有限的大电流，并通过使用双极晶体管（TR）来减小复合开关元件的尺寸和成本，双极晶体管（TR）的基极由发射极围绕，作为主控制阀。构成：双极性TR1的精细加工的电极被布置为使得基极B被发射电极E包围。因此，关断电流的电流在发射电极E具有交叉点的中心部分收敛; 基层的横向扩展电阻大，安全工作区域的介电强度降低。然而，电流在图1c所示的迂回侧的边缘部分处的接通状态收敛，并且与具有发射电极的元件相比，图1a中的电流会聚部分的面积大基极。

2. 发明专利

JPS57151269A OVERVOLTAGE PROTECTING CIRCUIT FOR SWITCHING SEMICONDUCTOR ELEMENT 失效
公开(公告)号：JPS57151269A
公开(公告)日：1982-09-18
申请号：JP3596781
申请日：1981-03-14
申请人： FUJI ELECTRIC CO LTD
发明人： ICHIJIYOU MASAMI
IPC分类号： H02M1/00 , H02M1/088
摘要： PURPOSE:To reduce the circuit loss of the overvoltage protecting circuit for a switching semiconductor element by connecting a series circuit of a discharging circuit and an energy storage circuit in parallel with the diode of a snubber circuit in which a series circuit of a capacitor and a diode is connected in parallel with a semiconductor element. CONSTITUTION:A capacitor 14 and a diode 16 are provided in parallel with a switching semiconductor element 10 to form a snubber circuit, and a series circuit of a discharging circuit 18 and an energy storage circuit 20 is connected in parallel with the diode 16. The overvoltage is protected by the capacitor 14 and the diode 16 at the time of breaking the element 10, and when the element 10 is conducted, the charge of the capacitor 14 is discharged through the discharging circuit 18, the energy storage circuit 20, and the element 10. Therefore, the loss of the circuit can be reduced, and the charge of the circuit 20 can be used as the ON or OFF controlling power of the element 10, thereby simplifying the circuit.

3. 发明专利

JPS5694979A SELFFEXCITING TYPE INVERTER 失效
公开(公告)号：JPS5694979A
公开(公告)日：1981-07-31
申请号：JP17196179
申请日：1979-12-28
申请人： FUJI ELECTRIC CO LTD
发明人： ICHIJIYOU MASAMI
IPC分类号： H02M7/515
摘要： PURPOSE:To improve a commutation efficiency without using a commutation capacitor by a method wherein voltage generated at taps of an output transformer provided with center-taps are made arc-suppressing voltages of thyristors, in the self-exciting inverter with the thyristors. CONSTITUTION:Main thyristors 20-23 are provided in bridge-connection between a DC power source 24 and the output transformer 25. The transformer 25 has the center-taps C, D in the primary winding, the center-tap terminals C, D are connected with output terminals of the thyristors 26-29 which are bridge-connected, and further, the diodes 30-33 for the fly-wheel are bridge-connected between the DC power source 24 and the center-tap terminals. In addition, the semiconductor switching elements 34, 35 with the self-arc-suppressing capability are connected between input terminals of the thyristors 26-29 and the power source 24. With the continuities of the switching elements 34, 35 and the thyristors 26, 29, the main thyristors 20, 23 are turned OFF by the voltage generated in the transformer.

4. 发明专利

JPS5694975A SELFFEXCITING TYPE INVERTER 失效
公开(公告)号：JPS5694975A
公开(公告)日：1981-07-31
申请号：JP17195779
申请日：1979-12-28
申请人： FUJI ELECTRIC CO LTD
发明人： HOSHI TOSHIHIKO , ICHIJIYOU MASAMI
IPC分类号： H02M7/515
摘要： PURPOSE:To improve a commutation efficiency without using a commutation capacitor by a method wherein the commutation is made using semiconductor switching elements having self-arc-suppressing capabilities and commutation reactors, in the self-excited type inverter in which thyristors are used. CONSTITUTION:For the thyristors 20-23, thyristors on the positive side and those on the negative side are connected with each other through the commutation reactors 24, 25 and center-taps of the commutation reactors 24, 25 are made output terminals. The semiconductor switching element 26-29 having the self-arc-suppressing capabilities and fly-wheel diodes 31-34 are connected between the output terminals and terminals P, N on the positive and negative side of a power source. Depending on the state that an electric power is supplied to the load 35 through the thyristor 20, striking signals of arc of the thyristor 20 is stopped, and with the continuities in the switching element 26 and the thyristor 21, a voltage reverse- biasing the thyristor 20 is generated in the reactor 24 to turn the thyristor 20 OFF.

5. 发明专利

JPS54161026A CONTROLLER FOR VOLTAGE TYPE PULSEEWIDTH MODULATION INVERTER 失效
公开(公告)号：JPS54161026A
公开(公告)日：1979-12-20
申请号：JP6922178
申请日：1978-06-08
申请人： FUJI ELECTRIC CO LTD
发明人： KURITA SHIGEFUMI , ICHIJIYOU MASAMI , SAWA KUNIHIKO
IPC分类号： H02M7/48 , H02M7/537
摘要： PURPOSE:To assuredly keep the current in a semiconductor element in an inverter within allowable limits by prociding a comparator having hysteresis characteristic. CONSTITUTION:There is provided a comparator 7 having hysteresis characteristic which compares the current limit value I from a setter 8 with the actual current value from a current detector 9, and the output signal is used for control of transistors T1-T3. As far as the actual current value does not rise to an upper limit which is determinded by the current limit set point and the hysteresis width of the comparator 7, a normal pulse-width modulation control is conducted. With the actual current value I risen to the upper limit, the output signal of the comparator 7 is inverted, transistors T1-T3 are turned off, and the actual current value starts decreasing. With the actual current value reached a lower limit which is determined by the current limit set point and the hysteresis width of the comparator 7, the output signal of the comparator 7 returns to its original state and becomes able to pass through a gate 10, restarting normal operation.

6. 发明专利

JPS60152226A PROTECTING CIRCUIT OF INVERTER 失效
公开(公告)号：JPS60152226A
公开(公告)日：1985-08-10
申请号：JP682284
申请日：1984-01-17
申请人： FUJI ELECTRIC CO LTD
发明人： ICHIJIYOU MASAMI
IPC分类号： H02H7/122 , H02M7/48

7. 发明专利

JPS56129582A BASE DRIVING CIRCUIT FOR TRANSISTOR 失效
公开(公告)号：JPS56129582A
公开(公告)日：1981-10-09
申请号：JP3254980
申请日：1980-03-14
申请人： FUJI ELECTRIC CO LTD
发明人： UEKI KOUICHI , ICHIJIYOU MASAMI
IPC分类号： H02M7/537 , H02M3/158
摘要： PURPOSE:To obtain the simple circuit with which a high speed switching can be performed on an alternately operating transistor by a method wherein the base forward current delay circuit, consisting of an RC integration circuit and a transistor switch, is provided on each output side of a pulse transformer. CONSTITUTION:On each output side of the two secondary windings of the pulse transformer 13 on the TR base driving circuit, whereon the two transistors (TR) 11 and 12 are connected in series to a power source, are operated with alternations of ON and OFF, the base forward current delay circuit consisting of the RC integration circuit and the TR switch which performs switching in response to the capacitor voltage of the RC integration circuit are provided. For example, in the circuit as shown in the diagram, the capacitor 16 on the integration circuit is charged through a resistor 15 and when its voltage reaches to the base emitter saturation voltage of a TR switch 17, an ON position is given to the TR switch instantly, the base forward current of the TR11 which is restricted by the resistor 18 begins to flow with a steep rise and the TR11 is turned on quickly.

8. 发明专利

JPS5694978A SELFFEXCITING TYPE INVERTER 失效
公开(公告)号：JPS5694978A
公开(公告)日：1981-07-31
申请号：JP17196079
申请日：1979-12-28
申请人： FUJI ELECTRIC CO LTD
发明人： ICHIJIYOU MASAMI
IPC分类号： H02M7/515
摘要： PURPOSE:To improve a commutation efficiency without using a commutation capacitor by a method wherein a commutated current passed through a commutating bias power source is led to the output side of a thyristor bridge, in the self- exciting type inverter with thyristors. CONSTITUTION:Main thyristors 20-23 connected in antiparallel with diodes 24-27 for a fly-wheel respectively are bridge-connected between a DC power source 28 and a load 29. One sides ends of semiconductor switching elements 30, 31 having self-arc-suppressing capability are connected to the positive and negative sides of the DC power source, a rectifier smoothing circuit 32 is connected between the other side ends. The rectifier smoothing circuit 32 is provided with a secondary winding of a transformer 33 as an input means of which primary winding is connected to an output terminal of the thyristor bridge, and becomes the commutating bias DC power source. With the continuities made in the switching element 30 and the thyristor 34, the voltage having flown in the main thyristor 20 is commutated and turned OFF.

9. 发明专利

JPS5687122A FREQUENCY FUNCTION GENERATOR 失效
公开(公告)号：JPS5687122A
公开(公告)日：1981-07-15
申请号：JP16498179
申请日：1979-12-19
申请人： FUJI ELECTRIC CO LTD
发明人： ICHIJIYOU MASAMI , UEKI KOUICHI
IPC分类号： G06F1/02
摘要： PURPOSE:To reduce not only the operation error but the temperature of the output voltage, by producing the desired cycle waveform through switching of the input resistance and then varying the amplitude of the output voltage in proportion to the control input voltage. CONSTITUTION:A number of branches consisting of the serial circuit of the input resistances Ri1-Rin plus the electronic switches S1-Sn are provided between the terminal to which the control input voltage ec and the input terminal of the operation amplifier OP. Then the switches S1-Sn are made to conduct successively by the pulse distributor PD to which the clock pulse es is supplied. The resistance value is selected previously to an appropriate level for the resistances Ri1-Rin which are made successively by the switches S1-Sn. As a result, the desired cycle function waveform can be extracted out of the output terminal of the operation amplifier OP in the form of the output voltage eo simulated with a staircase form. In this case, the amplitude of the voltage eo can be varied in proportion to the voltage ec. Thus the operation error and the temperature drift of the voltage eo can be reduced.

10. 发明专利

JPS55136878A INVERTER 失效
公开(公告)号：JPS55136878A
公开(公告)日：1980-10-25
申请号：JP4155179
申请日：1979-04-07
申请人： FUJI ELECTRIC CO LTD
发明人： ICHIJIYOU MASAMI , KURITA SHIGEFUMI
IPC分类号： H02M7/515
摘要： PURPOSE:To obtain high-frequency outputs having high voltages and large currents by a simple control method, by connecting a capacitor to the input side of a self- exciting inverter, and charging said capacitor from a DC power supply of a separately excited inverter. CONSTITUTION:A capacitor 16 is connected to the DC input side of a voltage-type three-phase self-exciting inverter 10. While a DC power supply 22, whose voltage can be adjusted, and a reactor 24 are serially connected to the input side of a current-type three-phase separately excited inverter 18. Then, the outputs of the inverters 10 and 18 are connected by a coupling reactor 26, and a load 28 is connected to the output terminal of the inverter 10. Therefore, the capacitor 16 charged by the DC power supply 22 of the separately excited inverter 18 via the self-exciting inverter 10 at the time of starting, and a specified reverse-bias voltage for commutation can be supplied to the separately excited inverter 18, thereby the number of parts can be reduced, and the high-frequency outputs having high voltages and large currents can be obtained.

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