JPS5479437A - Power supplying circuit - Google Patents

Power supplying circuit

Info

Publication number
JPS5479437A
JPS5479437A JP14601677A JP14601677A JPS5479437A JP S5479437 A JPS5479437 A JP S5479437A JP 14601677 A JP14601677 A JP 14601677A JP 14601677 A JP14601677 A JP 14601677A JP S5479437 A JPS5479437 A JP S5479437A
Authority
JP
Japan
Prior art keywords
circuit
pulse
supplied
output
control
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
JP14601677A
Other languages
Japanese (ja)
Inventor
Hideaki Kunisada
Yasuhiro Yamazaki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP14601677A priority Critical patent/JPS5479437A/en
Publication of JPS5479437A publication Critical patent/JPS5479437A/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

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Inverter Devices (AREA)
  • Thyristor Switches And Gates (AREA)

Abstract

PURPOSE:To supply stable power to a plurality of loads, by phase-controlling the main thyristor which constitutes a feeder interrupter. CONSTITUTION:The load current is detected by a meter current-transformer CT and an overcurrent signal S1 is produced by a comparator 11, and a pulse generating circuit 12a supplies a turn-on pulse to a thyristor SCR 3. An operation signal S2 from an operation-stop control circuit 10 and the signal S1 are coupled to an OR-circuit 15a, whose output is supplied to a soft-start circuit 17 and to a timer circuit 16. The outputs of an ACR control circuit 18 and the circuit 17 are supplied to a control-angle determining circuit 19, whose output is supplied to a pulse generating circuit 12b for producing a turn-on pulse to a thyristor SCR 1. The pulse generating circuit produces a pulse when the operating condition that (S3+S4) S2 (inverted S1) = 1 is satisfied by S1, S2, an output S4 from a zero-discriminating circuit 20 for control-angle, and an output S3 of the circuit 16, besides realization of the appropriate voltage polarity on the inverter side.
JP14601677A 1977-12-07 1977-12-07 Power supplying circuit Pending JPS5479437A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14601677A JPS5479437A (en) 1977-12-07 1977-12-07 Power supplying circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14601677A JPS5479437A (en) 1977-12-07 1977-12-07 Power supplying circuit

Publications (1)

Publication Number Publication Date
JPS5479437A true JPS5479437A (en) 1979-06-25

Family

ID=15398178

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14601677A Pending JPS5479437A (en) 1977-12-07 1977-12-07 Power supplying circuit

Country Status (1)

Country Link
JP (1) JPS5479437A (en)

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