JPS5496377A - Automatic surge rating measuring device - Google Patents

Automatic surge rating measuring device

Info

Publication number
JPS5496377A
JPS5496377A JP280578A JP280578A JPS5496377A JP S5496377 A JPS5496377 A JP S5496377A JP 280578 A JP280578 A JP 280578A JP 280578 A JP280578 A JP 280578A JP S5496377 A JPS5496377 A JP S5496377A
Authority
JP
Japan
Prior art keywords
current
voltage
value
measured
different
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
JP280578A
Other languages
Japanese (ja)
Other versions
JPS5749871B2 (en
Inventor
Satoru Todoroki
Riichi Uetsuki
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 JP280578A priority Critical patent/JPS5496377A/en
Publication of JPS5496377A publication Critical patent/JPS5496377A/en
Publication of JPS5749871B2 publication Critical patent/JPS5749871B2/ja
Granted legal-status Critical Current

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  • Testing Of Individual Semiconductor Devices (AREA)

Abstract

PURPOSE: To realize a device with which the surge resistance quantity can be easily and automatically measured for the component parts by supplying three different prescribed current value sequentially to each terminal pair of plural number of the semiconductor parts via the switching means and then measuring memorizing and calculating the voltage corresponding to the three different current value.
CONSTITUTION: The signals sent from control part 10 using the microcomputer are applied to terminal switching part 2, and the current given from current setting part 3 is supplied through switching from the first place of measured object terminal array part 1 in sequence to be then measured at voltage/current measuring part 4. At part 3, 1st set current I0 of the first-half breakdown period of the element, 2nd set cuttent I1 of the breakdown region of over I0 and 3rd set current I3 different from I1 are obtained previously with the average value of the lot to which the element belongs. At part 4, voltage V0, V1 and V3 are measured corresponding to current I0, I1 and I2 respectively and this output is compared 5 with the reference voltage value. When the output is over the reference voltage, A/D conversion 6, memorization 7 and operation 8 are given respectively. Then voltage limit exponent α and surge resistance quantity N are calculated based on Eqs (1) and (2), and thus the agerage value and the reference deviation are obtained to be delivered through printing part 9.
COPYRIGHT: (C)1979,JPO&Japio
JP280578A 1978-01-17 1978-01-17 Automatic surge rating measuring device Granted JPS5496377A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP280578A JPS5496377A (en) 1978-01-17 1978-01-17 Automatic surge rating measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP280578A JPS5496377A (en) 1978-01-17 1978-01-17 Automatic surge rating measuring device

Publications (2)

Publication Number Publication Date
JPS5496377A true JPS5496377A (en) 1979-07-30
JPS5749871B2 JPS5749871B2 (en) 1982-10-25

Family

ID=11539587

Family Applications (1)

Application Number Title Priority Date Filing Date
JP280578A Granted JPS5496377A (en) 1978-01-17 1978-01-17 Automatic surge rating measuring device

Country Status (1)

Country Link
JP (1) JPS5496377A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57203672A (en) * 1981-06-08 1982-12-14 Fujitec Kk Annunciator for elevator

Also Published As

Publication number Publication date
JPS5749871B2 (en) 1982-10-25

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