KR960024391A - Input circuit structure of digital multimeter - Google Patents

Input circuit structure of digital multimeter Download PDF

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Publication number
KR960024391A
KR960024391A KR1019940039191A KR19940039191A KR960024391A KR 960024391 A KR960024391 A KR 960024391A KR 1019940039191 A KR1019940039191 A KR 1019940039191A KR 19940039191 A KR19940039191 A KR 19940039191A KR 960024391 A KR960024391 A KR 960024391A
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KR
South Korea
Prior art keywords
selection switch
input terminal
digital multimeter
input
switch
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Application number
KR1019940039191A
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Korean (ko)
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KR0122463B1 (en
Inventor
황동원
Original Assignee
손기락
Lg 정밀 주식회사
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Application filed by 손기락, Lg 정밀 주식회사 filed Critical 손기락
Priority to KR1019940039191A priority Critical patent/KR0122463B1/en
Publication of KR960024391A publication Critical patent/KR960024391A/en
Application granted granted Critical
Publication of KR0122463B1 publication Critical patent/KR0122463B1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/12—Circuits for multi-testers, i.e. multimeters, e.g. for measuring voltage, current, or impedance at will
    • G01R15/125—Circuits for multi-testers, i.e. multimeters, e.g. for measuring voltage, current, or impedance at will for digital multimeters

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

본 발명은 디지탈멀티미터(Digital Multi-meter)에 관한 것으로, 더욱 상세하게는 입력단자를 2개로 구성한 디지탈멀티미터의 기능선택부의 구성에 관한 것이다. 이 장치는 소정 물체의 전류, 저항 및 전압 측정을 위한 측정기능을 선택하는 기능선택스위치를 구비한 디지탈멀티미터에 있어서 기저전위와 접속한 제1입력단자와 소정물체와 연결되는 제2입력단자와 상기 기능선택스위치와 기계적으로 연동되어, 상기 기능선택스위치에서 선택한 기능에 따라 온/오프되는 3개의 접점스위치와 상기 제2입력단자와 상기 3개의 접점스위치 사이에 병렬 접속한 3개의 입력선택스위치로 구성하여, 상기 접점스위치의 동작에 연동되어 직렬 접속한 입력선택스위치가 온/오프됨을 특징으로 한다.The present invention relates to a digital multimeter, and more particularly, to a configuration of a function selection unit of a digital multimeter having two input terminals. The device is a digital multimeter having a function selection switch for selecting a measurement function for measuring current, resistance, and voltage of a predetermined object, the first input terminal connected to the ground potential, and the second input terminal connected to the predetermined object. 3 contact switches mechanically interlocked with the function selection switch and turned on / off according to the function selected by the function selection switch and three input selection switches connected in parallel between the second input terminal and the three contact switches. The input selection switch connected in series with the operation of the contact switch is characterized in that the on / off.

Description

디지탈멀티미터의 입력회로부 구조Input circuit structure of digital multimeter

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제5도는 본 발명에 의한 디지탈멀티미터의 정면도, 제6도는 본 발명에 의한 디지탈멀티미터의 기능선택부의 내부회로도.5 is a front view of a digital multimeter according to the present invention, and FIG. 6 is an internal circuit diagram of a function selection unit of the digital multimeter according to the present invention.

Claims (2)

소정 물체의 전류, 저항 및 전압 측정을 위한 측정기능을 선택하는 기능선택스위치(32)를 구비한 디지탈멀티미터에 있어서; 기저전위와 접속한 제1입력단자와; 소정물체와 연결되는 제2입력단자와; 상기 기능선택스위치와 기계적으로 연동되어, 상기 기능선택스위치에서 선택한 기능에 따라 온/오프되는 3개의 접점스위치(S1,S2,S3)와; 상기 제2입력단자와 상기 3개의 접점스위치 사이에 병렬 접속한 3개의 입력선택스위치(S4,S5,S6)로 구성하여, 상기 접점스위치의 동작에 연동되어 직렬 접속한 입력선택스위치가 온/오프됨을 특징으로 하는 디지탈멀티미터의 입력회로부 구조.A digital multimeter having a function selection switch 32 for selecting measurement functions for measuring current, resistance, and voltage of a predetermined object; A first input terminal connected to the base potential; A second input terminal connected to a predetermined object; Three contact switches (S1, S2, S3) mechanically interlocked with the function selection switch and turned on / off according to a function selected by the function selection switch; The input selection switch (S4, S5, S6) connected in parallel between the second input terminal and the three contact switches is configured to be connected in series with the operation of the contact switch. Input circuit part structure of the digital multimeter. 소정 물체의 전류, 저항 및 전압 측정을 위한 측정기능을 선택하는 기능선택스위치(32)를 구비한 디지탈멀티미터에 있어서; 기저전위와 접속한 제1입력단자(48)와; 소정물체와 연결되는 제2입력단자(47)와; 상기 기능선택스위치와 기계적으로 연동되어, 상기 기능선택스위치에서 선택한 높은 전류 측정, 낮은 전류 측정, 저항과 전압측정기능에 따라온/오프되는 제1,2,3접점스위치(S3,S2,Sl)와; 상기 제1입력단자(47)와 높은 전류 측정기능 선택에 따라 동작하는 상기 제l접점스위치(S3) 사이에 직렬 접속하여, 상기 제1접점스위치의 동작에 연동되어 온/오프되는 제1입력선택스위치(S8)와; 상기 제2입력단자(47)와 상기 제2,3접점스위치(S2,S1) 사이에 접속하여, 상기 제2,3스위치의 동작에 연동되어 온/오프되는 제2입력선택스위치(S7)로 구성하는 것을 특징으로 하는 디지탈멀티미터의 입력회로부 구조.A digital multimeter having a function selection switch 32 for selecting measurement functions for measuring current, resistance, and voltage of a predetermined object; A first input terminal 48 connected to the ground potential; A second input terminal 47 connected to a predetermined object; Mechanically interlocked with the function selection switch, the first, second and third contact switches (S3, S2, Sl) turned on / off according to the high current measurement, low current measurement, resistance and voltage measurement functions selected by the function selection switch. ; A first input selection connected in series between the first input terminal 47 and the first contact switch S3 operating according to the selection of the high current measurement function, and interlocked with the operation of the first contact switch; A switch S8; A second input selection switch S7 connected between the second input terminal 47 and the second and third contact switches S2 and S1 to be turned on / off in conjunction with the operation of the second and third switches; The structure of the input circuit part of a digital multimeter characterized by the above-mentioned. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940039191A 1994-12-30 1994-12-30 Input circuit structure of digital multimeter KR0122463B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940039191A KR0122463B1 (en) 1994-12-30 1994-12-30 Input circuit structure of digital multimeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940039191A KR0122463B1 (en) 1994-12-30 1994-12-30 Input circuit structure of digital multimeter

Publications (2)

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KR960024391A true KR960024391A (en) 1996-07-20
KR0122463B1 KR0122463B1 (en) 1997-12-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102296457B1 (en) * 2020-05-28 2021-09-02 울산과학기술원 Electronic measuring instrument

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102296457B1 (en) * 2020-05-28 2021-09-02 울산과학기술원 Electronic measuring instrument

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KR0122463B1 (en) 1997-12-05

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