JPS55140330A - Current division unit - Google Patents

Current division unit

Info

Publication number
JPS55140330A
JPS55140330A JP4795279A JP4795279A JPS55140330A JP S55140330 A JPS55140330 A JP S55140330A JP 4795279 A JP4795279 A JP 4795279A JP 4795279 A JP4795279 A JP 4795279A JP S55140330 A JPS55140330 A JP S55140330A
Authority
JP
Japan
Prior art keywords
collectors
injector
type semiconductor
constant current
effective
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
JP4795279A
Other languages
Japanese (ja)
Inventor
Makoto Furuhata
Kyoichi Takahashi
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 JP4795279A priority Critical patent/JPS55140330A/en
Publication of JPS55140330A publication Critical patent/JPS55140330A/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
    • H03K19/091—Integrated injection logic or merged transistor 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 obtain a simplified current dividing circuit by providing plural emitters and collectors, where effective emitter and collector areas are set in respective division ratios, and a base biased commonly. CONSTITUTION:The effective emitter area ratio of P-type semiconductor regions 1a and 1b which constitute the injector of an I<2>L circuit is set to, for example, 1:2, and effective collector areas of P-type semiconductor regions 2a1-2a3 and 2b1-2b4 which constitute collectors corresponding to them are divided into three and four equally respectively. N<-> type semiconductor region 3 constitutes a practical base region and is biased to the earth potential. If emitter regions 1a and 1b are made common and constant current I0 is flowed, the current input from injector 1a to collectors 2a1-2a3 becomes I0/3X1/3=10/9. Meanwhile, the current input from injector 1b to collectors 2b1-2b4 becomes 2I0/3X1/4=I0/6. Consequently, different constant current loads can be obtained from one constant current source by a simplified circuit.
JP4795279A 1979-04-20 1979-04-20 Current division unit Pending JPS55140330A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4795279A JPS55140330A (en) 1979-04-20 1979-04-20 Current division unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4795279A JPS55140330A (en) 1979-04-20 1979-04-20 Current division unit

Publications (1)

Publication Number Publication Date
JPS55140330A true JPS55140330A (en) 1980-11-01

Family

ID=12789684

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4795279A Pending JPS55140330A (en) 1979-04-20 1979-04-20 Current division unit

Country Status (1)

Country Link
JP (1) JPS55140330A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59108344U (en) * 1983-01-13 1984-07-21 三洋電機株式会社 transistor circuit
JPS59114636U (en) * 1983-01-21 1984-08-02 三洋電機株式会社 transistor circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59108344U (en) * 1983-01-13 1984-07-21 三洋電機株式会社 transistor circuit
JPH0336112Y2 (en) * 1983-01-13 1991-07-31
JPS59114636U (en) * 1983-01-21 1984-08-02 三洋電機株式会社 transistor circuit

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