JPS573428A - Interface circuit - Google Patents

Interface circuit

Info

Publication number
JPS573428A
JPS573428A JP7684680A JP7684680A JPS573428A JP S573428 A JPS573428 A JP S573428A JP 7684680 A JP7684680 A JP 7684680A JP 7684680 A JP7684680 A JP 7684680A JP S573428 A JPS573428 A JP S573428A
Authority
JP
Japan
Prior art keywords
base
voltage
trq
collector
emitter
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.)
Granted
Application number
JP7684680A
Other languages
Japanese (ja)
Other versions
JPH0154892B2 (en
Inventor
Tadao Totsuka
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP7684680A priority Critical patent/JPS573428A/en
Publication of JPS573428A publication Critical patent/JPS573428A/en
Publication of JPH0154892B2 publication Critical patent/JPH0154892B2/ja
Granted 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
    • H03K19/0175—Coupling arrangements; Interface arrangements
    • H03K19/018—Coupling arrangements; Interface arrangements using bipolar transistors only
    • H03K19/01806—Interface arrangements

Landscapes

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

Abstract

PURPOSE:To accomplish an economical circuit not affecting on an input signal source, by using a constant voltage characteristic between the emitter and the base and clamping te base voltage to the collector voltage. CONSTITUTION:When a switch SW is open, a transistor (TR)Q is broken down at a reverse voltage VBE, and a constant voltage characteristic appears between the emitter and the base. Since a diode characteristic is given between the base and the collector, the base of the TRQ is clamped at a collector voltage. When the switch SW is closed, the TRQ is turned on and the base voltage is at ground potential. Moreover, a capacitor Cd connected to the base of the TRQ is used for chattering prevention.
JP7684680A 1980-06-06 1980-06-06 Interface circuit Granted JPS573428A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7684680A JPS573428A (en) 1980-06-06 1980-06-06 Interface circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7684680A JPS573428A (en) 1980-06-06 1980-06-06 Interface circuit

Publications (2)

Publication Number Publication Date
JPS573428A true JPS573428A (en) 1982-01-08
JPH0154892B2 JPH0154892B2 (en) 1989-11-21

Family

ID=13617020

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7684680A Granted JPS573428A (en) 1980-06-06 1980-06-06 Interface circuit

Country Status (1)

Country Link
JP (1) JPS573428A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61241048A (en) * 1985-04-16 1986-10-27 Shimada Phys & Chem Ind Co Ltd Supervisory method for ultrasonic machining

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5082674U (en) * 1973-12-05 1975-07-16

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5082674U (en) * 1973-12-05 1975-07-16

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61241048A (en) * 1985-04-16 1986-10-27 Shimada Phys & Chem Ind Co Ltd Supervisory method for ultrasonic machining

Also Published As

Publication number Publication date
JPH0154892B2 (en) 1989-11-21

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