JPS5448150A - Curernt switch circuit - Google Patents

Curernt switch circuit

Info

Publication number
JPS5448150A
JPS5448150A JP11458277A JP11458277A JPS5448150A JP S5448150 A JPS5448150 A JP S5448150A JP 11458277 A JP11458277 A JP 11458277A JP 11458277 A JP11458277 A JP 11458277A JP S5448150 A JPS5448150 A JP S5448150A
Authority
JP
Japan
Prior art keywords
transistor
constant
voltage
turned
features
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
JP11458277A
Other languages
Japanese (ja)
Inventor
Nobuo Kunimi
Kazuo Tada
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 JP11458277A priority Critical patent/JPS5448150A/en
Publication of JPS5448150A publication Critical patent/JPS5448150A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
    • H03K19/08—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using semiconductor devices
    • H03K19/082—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using semiconductor devices using bipolar transistors
    • H03K19/086—Emitter coupled logic

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Logic Circuits (AREA)

Abstract

PURPOSE:To reduce the load of the constant voltage generator cdircuit in case no input signal is applied, by applying the prescribed voltage to constant current load transistor for input signal level shift. CONSTITUTION:When input terminal IN features the floating state, transistor Q8 is turned ON. And the collector voltage of constant current transistor Q7 is clamped to the potential of Vref-2VBE' and the action is stopped at the saturation region. Accordingly, the supply current given from constant voltage VCS terminal is turned to the base current. Thus, the constant voltage generator circuit, even if it features the minimum necessary capacity, does not give negative effects due to the voltage fluctuation to othe circuits regardless of the presence or absence of the input terminal's floating.
JP11458277A 1977-09-26 1977-09-26 Curernt switch circuit Pending JPS5448150A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11458277A JPS5448150A (en) 1977-09-26 1977-09-26 Curernt switch circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11458277A JPS5448150A (en) 1977-09-26 1977-09-26 Curernt switch circuit

Publications (1)

Publication Number Publication Date
JPS5448150A true JPS5448150A (en) 1979-04-16

Family

ID=14641443

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11458277A Pending JPS5448150A (en) 1977-09-26 1977-09-26 Curernt switch circuit

Country Status (1)

Country Link
JP (1) JPS5448150A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7471496B2 (en) * 2004-11-09 2008-12-30 Sanken Electric Co., Ltd. Solenoid driving apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7471496B2 (en) * 2004-11-09 2008-12-30 Sanken Electric Co., Ltd. Solenoid driving apparatus

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