JPS54121777A - Current applying voltage measuring circuit - Google Patents

Current applying voltage measuring circuit

Info

Publication number
JPS54121777A
JPS54121777A JP2868178A JP2868178A JPS54121777A JP S54121777 A JPS54121777 A JP S54121777A JP 2868178 A JP2868178 A JP 2868178A JP 2868178 A JP2868178 A JP 2868178A JP S54121777 A JPS54121777 A JP S54121777A
Authority
JP
Japan
Prior art keywords
measuring object
voltage
current
measuring
hence
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
JP2868178A
Other languages
Japanese (ja)
Other versions
JPS608751B2 (en
Inventor
Takeshi Hattori
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 JP2868178A priority Critical patent/JPS608751B2/en
Publication of JPS54121777A publication Critical patent/JPS54121777A/en
Publication of JPS608751B2 publication Critical patent/JPS608751B2/en
Expired legal-status Critical Current

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  • Testing Of Individual Semiconductor Devices (AREA)

Abstract

PURPOSE: To prevent oscillation and accurately detect voltages by inserting a resistance in series to the measuring object to make the synthesized resistance value with the measuring object to positive characteristics and obtaining voltage detecting terminals from both ends of the measuring object.
CONSTITUTION: A series resistance R0 is held inserted between the measuring object 1 such as MISFET of ground connection, etc. and the measuring output terminal T to which the constant current (i) outputted by the inversion amplifier circuit constituted by operational amplifers OP1 thru OP3 and the synthesized resistance value with the measuring object 1 becomes always of positive characteristics. Hence, such oscillation wherein the current (i) increases resulting in decreased voltage of the measuring object 1 and the current (i) further increased to reach supply capacity thence conversely decreases does not occur. Hence, the voltage drop by the measuring object 1 wherein the both ends of the measuring object 1 are voltage detecting terminals is connected to the operational amplifier OP0 which acts as a voltage follower and is accurately detected with the high impedance voltmeter V whose other end is ground connection.
COPYRIGHT: (C)1979,JPO&Japio
JP2868178A 1978-03-15 1978-03-15 Current applied voltage measurement circuit Expired JPS608751B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2868178A JPS608751B2 (en) 1978-03-15 1978-03-15 Current applied voltage measurement circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2868178A JPS608751B2 (en) 1978-03-15 1978-03-15 Current applied voltage measurement circuit

Publications (2)

Publication Number Publication Date
JPS54121777A true JPS54121777A (en) 1979-09-21
JPS608751B2 JPS608751B2 (en) 1985-03-05

Family

ID=12255230

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2868178A Expired JPS608751B2 (en) 1978-03-15 1978-03-15 Current applied voltage measurement circuit

Country Status (1)

Country Link
JP (1) JPS608751B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467273A (en) * 1978-12-22 1984-08-21 Technicare Corporation Interchangeable component identification system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4856276U (en) * 1971-10-29 1973-07-18
JPS491804Y1 (en) * 1968-09-06 1974-01-17

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS491804Y1 (en) * 1968-09-06 1974-01-17
JPS4856276U (en) * 1971-10-29 1973-07-18

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467273A (en) * 1978-12-22 1984-08-21 Technicare Corporation Interchangeable component identification system

Also Published As

Publication number Publication date
JPS608751B2 (en) 1985-03-05

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