JPS546473A - Protection unit - Google Patents

Protection unit

Info

Publication number
JPS546473A
JPS546473A JP7111477A JP7111477A JPS546473A JP S546473 A JPS546473 A JP S546473A JP 7111477 A JP7111477 A JP 7111477A JP 7111477 A JP7111477 A JP 7111477A JP S546473 A JPS546473 A JP S546473A
Authority
JP
Japan
Prior art keywords
protection unit
fet
thermister
overcurrent
temperature characteristics
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
JP7111477A
Other languages
Japanese (ja)
Inventor
Gichu Oota
Toru Sanbe
Shinichi Ohashi
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 JP7111477A priority Critical patent/JPS546473A/en
Publication of JPS546473A publication Critical patent/JPS546473A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • H02H9/026—Current limitation using PTC resistors, i.e. resistors with a large positive temperature coefficient

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To protect FET from overcurrent, by connecting a thermister of positive temperature characteristics to the drain electrode or source electrode of a FET.
JP7111477A 1977-06-17 1977-06-17 Protection unit Pending JPS546473A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7111477A JPS546473A (en) 1977-06-17 1977-06-17 Protection unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7111477A JPS546473A (en) 1977-06-17 1977-06-17 Protection unit

Publications (1)

Publication Number Publication Date
JPS546473A true JPS546473A (en) 1979-01-18

Family

ID=13451200

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7111477A Pending JPS546473A (en) 1977-06-17 1977-06-17 Protection unit

Country Status (1)

Country Link
JP (1) JPS546473A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6318862U (en) * 1986-07-19 1988-02-08
FR2631173A1 (en) * 1988-05-04 1989-11-10 Meca Sarl Ste Nle SECURITY POWER VARIATOR
JP2014099689A (en) * 2012-11-13 2014-05-29 Nippon Dempa Kogyo Co Ltd Temperature control circuit with crystal oscillator with thermostat
JP6031169B1 (en) * 2015-09-16 2016-11-24 株式会社オーバル Instrumentation equipment with pulse output function

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6318862U (en) * 1986-07-19 1988-02-08
FR2631173A1 (en) * 1988-05-04 1989-11-10 Meca Sarl Ste Nle SECURITY POWER VARIATOR
WO1989011175A1 (en) * 1988-05-04 1989-11-16 Societe Nouvelle Meca S.A.R.L. Protective power variator
JP2014099689A (en) * 2012-11-13 2014-05-29 Nippon Dempa Kogyo Co Ltd Temperature control circuit with crystal oscillator with thermostat
JP6031169B1 (en) * 2015-09-16 2016-11-24 株式会社オーバル Instrumentation equipment with pulse output function
WO2017047823A1 (en) * 2015-09-16 2017-03-23 株式会社オーバル Instrumentation device having pulse output function
KR20180042393A (en) * 2015-09-16 2018-04-25 가부시키가이샤 오바루 Measuring instrument with pulse output function
US10320377B2 (en) 2015-09-16 2019-06-11 Oval Corporation Instrumentation device having pulse output function

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