JPS5710462A - Current difference detection circuit - Google Patents

Current difference detection circuit

Info

Publication number
JPS5710462A
JPS5710462A JP8536780A JP8536780A JPS5710462A JP S5710462 A JPS5710462 A JP S5710462A JP 8536780 A JP8536780 A JP 8536780A JP 8536780 A JP8536780 A JP 8536780A JP S5710462 A JPS5710462 A JP S5710462A
Authority
JP
Japan
Prior art keywords
mos
fet
difference
current
flowing
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
JP8536780A
Other languages
Japanese (ja)
Inventor
Masunori Sugimoto
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP8536780A priority Critical patent/JPS5710462A/en
Priority to EP84105146A priority patent/EP0139078B1/en
Priority to EP81104892A priority patent/EP0045841B1/en
Priority to DE8484105146T priority patent/DE3176981D1/en
Priority to DE8181104892T priority patent/DE3173056D1/en
Priority to US06/276,742 priority patent/US4427903A/en
Publication of JPS5710462A publication Critical patent/JPS5710462A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/10—Measuring sum, difference or ratio

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

PURPOSE:To obtain simply the difference of the currents flowing through two MOS- FET by making the potential difference of the MOS-FET connected with two MOS- FET to be detected negative feedback through a differential amplification circuit. CONSTITUTION:In the range of working potential the characteristics of the MOS- FET 1 and 2 are selected so that the current flowing through the MOS-FET 5 from the power source 14 in the state wherein the MOS-FET 3 is removed may be bigger than the current flowing through the MOS-FET 6. The potential difference between the points 11 and 12 is made to make negative feed-back to the MOS-FET 3 through a differential amplifier 7 for making the values of the currents flowing through the load elements 5 and 6 equal. Accordingly, the current flowing through the MOS-FET is equal to the difference between the currents flowing through the MOS-FET 1 and 2 so that the current proportional to said current difference can be obtained at the output terminal 10 of the MOS-FET 4. Thereby in case the linear voltage current characteristic is required the difference of the current flowing through the MOS-FET can be easily obtained.
JP8536780A 1980-06-24 1980-06-24 Current difference detection circuit Pending JPS5710462A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP8536780A JPS5710462A (en) 1980-06-24 1980-06-24 Current difference detection circuit
EP84105146A EP0139078B1 (en) 1980-06-24 1981-06-24 Amplifier transistor circuit
EP81104892A EP0045841B1 (en) 1980-06-24 1981-06-24 Linear voltage-current converter
DE8484105146T DE3176981D1 (en) 1980-06-24 1981-06-24 Amplifier transistor circuit
DE8181104892T DE3173056D1 (en) 1980-06-24 1981-06-24 Linear voltage-current converter
US06/276,742 US4427903A (en) 1980-06-24 1981-06-24 Voltage current converter circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8536780A JPS5710462A (en) 1980-06-24 1980-06-24 Current difference detection circuit

Publications (1)

Publication Number Publication Date
JPS5710462A true JPS5710462A (en) 1982-01-20

Family

ID=13856738

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8536780A Pending JPS5710462A (en) 1980-06-24 1980-06-24 Current difference detection circuit

Country Status (1)

Country Link
JP (1) JPS5710462A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5827086A (en) * 1996-02-08 1998-10-27 Yazaki Corporation Half-fitting prevention connector
JP2009275836A (en) * 2008-05-15 2009-11-26 Hitachi Koki Co Ltd Engine tool
US9410513B2 (en) 2011-02-14 2016-08-09 Makita Corporation Engine configured to drive a diaphragm fuel pump using pressure fluctuation in a crank chamber of the engine
CN114047798A (en) * 2022-01-12 2022-02-15 苏州贝克微电子股份有限公司 High-precision current detection device inside integrated circuit chip

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5827086A (en) * 1996-02-08 1998-10-27 Yazaki Corporation Half-fitting prevention connector
JP2009275836A (en) * 2008-05-15 2009-11-26 Hitachi Koki Co Ltd Engine tool
US9410513B2 (en) 2011-02-14 2016-08-09 Makita Corporation Engine configured to drive a diaphragm fuel pump using pressure fluctuation in a crank chamber of the engine
CN114047798A (en) * 2022-01-12 2022-02-15 苏州贝克微电子股份有限公司 High-precision current detection device inside integrated circuit chip
CN114047798B (en) * 2022-01-12 2022-04-29 苏州贝克微电子股份有限公司 High-precision current detection device inside integrated circuit chip

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