JPS5491109A - Scanning system of thyristor-type channel switch - Google Patents

Scanning system of thyristor-type channel switch

Info

Publication number
JPS5491109A
JPS5491109A JP16069677A JP16069677A JPS5491109A JP S5491109 A JPS5491109 A JP S5491109A JP 16069677 A JP16069677 A JP 16069677A JP 16069677 A JP16069677 A JP 16069677A JP S5491109 A JPS5491109 A JP S5491109A
Authority
JP
Japan
Prior art keywords
constant
current
thyristor
decoder
scanning system
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
JP16069677A
Other languages
Japanese (ja)
Inventor
Haruyuki Yoshino
Wataru Naito
Kenzo Hasegawa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP16069677A priority Critical patent/JPS5491109A/en
Publication of JPS5491109A publication Critical patent/JPS5491109A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/521—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements using semiconductors in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To realize a scanning system of a thyristor channel switch which absorbs on-state resistance deviation, by switching successively only one constant-current power supply path in a row direction to form always a constant-current value path. CONSTITUTION:Constant-current controller 7 and constant-current switch 8 supply the DC bias to a channel. Constant-current switch 8 is controlled by counter 9, decoder 10 and timing circuit 11 and switches only one path for the selectrd constant current in the row direction. Then, register 6 accumulates matrix information from the control system, by which it is decided whether the row should be selected or not, as a decode, and selection gate 5 operates AND between register 6 and decoder 10 to transmit successively the same information to plural outputs at the output timing of decoder 10, thereby absorbing the on-state resistance deviation of a thyristor.
JP16069677A 1977-12-28 1977-12-28 Scanning system of thyristor-type channel switch Pending JPS5491109A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16069677A JPS5491109A (en) 1977-12-28 1977-12-28 Scanning system of thyristor-type channel switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16069677A JPS5491109A (en) 1977-12-28 1977-12-28 Scanning system of thyristor-type channel switch

Publications (1)

Publication Number Publication Date
JPS5491109A true JPS5491109A (en) 1979-07-19

Family

ID=15720482

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16069677A Pending JPS5491109A (en) 1977-12-28 1977-12-28 Scanning system of thyristor-type channel switch

Country Status (1)

Country Link
JP (1) JPS5491109A (en)

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