JPS5550741A - Thyristor unit - Google Patents

Thyristor unit

Info

Publication number
JPS5550741A
JPS5550741A JP12266478A JP12266478A JPS5550741A JP S5550741 A JPS5550741 A JP S5550741A JP 12266478 A JP12266478 A JP 12266478A JP 12266478 A JP12266478 A JP 12266478A JP S5550741 A JPS5550741 A JP S5550741A
Authority
JP
Japan
Prior art keywords
current
scr
circuit
resistor
chopper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP12266478A
Other languages
Japanese (ja)
Inventor
Hiroyuki Nomura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12266478A priority Critical patent/JPS5550741A/en
Publication of JPS5550741A publication Critical patent/JPS5550741A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/72—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region
    • H03K17/73—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region for dc voltages or currents

Landscapes

  • Thyristor Switches And Gates (AREA)
  • Dc-Dc Converters (AREA)
  • Power Conversion In General (AREA)

Abstract

PURPOSE:To reduce the loss and to aboid the necessity of complicated operation circuit, by providing the circuit assuring the latch current and holding current. CONSTITUTION:The resistor 1 for the value to assure the holding current, and the resistor 2 and capacitor C3 to assure the required latch current are connected in parallel, and the resulting circuit is connected to the output side if the circuit 11 using the reverse conducting SCR in parallel with the load 12. In the SCR chopper taking the field winding of a rorating machine as a load, when the second SCR chopper ON period comes, C3 is charged up and current ih flow to the resistor 1, and if ih is more than the holding current of SCR, SCR turns on. Further, at the next OFF period, the discharge current id flows through the resistors 2, 1, and at the next period, the charging current can flow, and the chopper can be started by repeating this.
JP12266478A 1978-10-06 1978-10-06 Thyristor unit Pending JPS5550741A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12266478A JPS5550741A (en) 1978-10-06 1978-10-06 Thyristor unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12266478A JPS5550741A (en) 1978-10-06 1978-10-06 Thyristor unit

Publications (1)

Publication Number Publication Date
JPS5550741A true JPS5550741A (en) 1980-04-12

Family

ID=14841571

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12266478A Pending JPS5550741A (en) 1978-10-06 1978-10-06 Thyristor unit

Country Status (1)

Country Link
JP (1) JPS5550741A (en)

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