JPS55107333A - Switch circuit of bridge type - Google Patents

Switch circuit of bridge type

Info

Publication number
JPS55107333A
JPS55107333A JP1334779A JP1334779A JPS55107333A JP S55107333 A JPS55107333 A JP S55107333A JP 1334779 A JP1334779 A JP 1334779A JP 1334779 A JP1334779 A JP 1334779A JP S55107333 A JPS55107333 A JP S55107333A
Authority
JP
Japan
Prior art keywords
current
switches
circuit
circuits
type
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
JP1334779A
Other languages
Japanese (ja)
Inventor
Junjiro Kitano
Shinji Okuhara
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 JP1334779A priority Critical patent/JPS55107333A/en
Publication of JPS55107333A publication Critical patent/JPS55107333A/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

Abstract

PURPOSE:To prevent the leakage of drive current to other power supply circuit, by constituting the bridge with two sets of P and N type PNPN switches and driving the two with the constant current circuit of current supply type and the other with that of current absorption type. CONSTITUTION:The bridge type switch circuit is constituted with P gate PNPN switches 6, 7 and N gate PNPN switches 4, 5. The current supply type constant current circuits 10, 11 drive the switches 6, 7 and the current absorption type constant current circuits 8, 9 drive the switches 4, 5. When the circuits 8-11 stop the current supply and absorption, the switches 4-7 are OFF, the load circuit 3 is separated from the office lines 1, 1', and when the circuits 8-11 are operative, the switches 4-7 are ON and the circuit 3 is connected to the office lines 1, 1'. By keeping equal the current set value IGP of the circuits 8, 9 with that IGN of the circuit 10, 11, the leakage of drive current to the office lines 1, 1' can be prevented.
JP1334779A 1979-02-09 1979-02-09 Switch circuit of bridge type Pending JPS55107333A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1334779A JPS55107333A (en) 1979-02-09 1979-02-09 Switch circuit of bridge type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1334779A JPS55107333A (en) 1979-02-09 1979-02-09 Switch circuit of bridge type

Publications (1)

Publication Number Publication Date
JPS55107333A true JPS55107333A (en) 1980-08-18

Family

ID=11830568

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1334779A Pending JPS55107333A (en) 1979-02-09 1979-02-09 Switch circuit of bridge type

Country Status (1)

Country Link
JP (1) JPS55107333A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0623208U (en) * 1992-05-19 1994-03-25 岡谷電機産業株式会社 Composite electronic components

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0623208U (en) * 1992-05-19 1994-03-25 岡谷電機産業株式会社 Composite electronic components

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