JPS5585267A - Trouble diagonosing circuit for driving trasistor - Google Patents

Trouble diagonosing circuit for driving trasistor

Info

Publication number
JPS5585267A
JPS5585267A JP15746778A JP15746778A JPS5585267A JP S5585267 A JPS5585267 A JP S5585267A JP 15746778 A JP15746778 A JP 15746778A JP 15746778 A JP15746778 A JP 15746778A JP S5585267 A JPS5585267 A JP S5585267A
Authority
JP
Japan
Prior art keywords
trouble
transistor
drive
diagonosing
trasistor
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
JP15746778A
Other languages
Japanese (ja)
Inventor
Tetsuzo Tanimoto
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 JP15746778A priority Critical patent/JPS5585267A/en
Publication of JPS5585267A publication Critical patent/JPS5585267A/en
Pending legal-status Critical Current

Links

Landscapes

  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

PURPOSE: To quickly discriminate the trouble location and trouble conditions of a transistor which drives a relay, a solenoid or the like by detecting and diagonosing by an on-line operation the unsatisfactory function of the transistor due to damage or trouble.
CONSTITUTION: In response to a drive instraction produced as output from a control circuit 1 a transistor 4 connected to a load 6 such as a relay or the like is turned on only during a period where a drive instruction exists, and is put in a driving state to drive the load 6. By a detection signal from drive detection means provided in the transistor 4 and a timing signal produced from the drive instruction, any damage or trouble of the transistor 4 is digitally detected. the detection signal thus obtained is immediately subjected to an on-line operation.
COPYRIGHT: (C)1980,JPO&Japio
JP15746778A 1978-12-22 1978-12-22 Trouble diagonosing circuit for driving trasistor Pending JPS5585267A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15746778A JPS5585267A (en) 1978-12-22 1978-12-22 Trouble diagonosing circuit for driving trasistor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15746778A JPS5585267A (en) 1978-12-22 1978-12-22 Trouble diagonosing circuit for driving trasistor

Publications (1)

Publication Number Publication Date
JPS5585267A true JPS5585267A (en) 1980-06-27

Family

ID=15650301

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15746778A Pending JPS5585267A (en) 1978-12-22 1978-12-22 Trouble diagonosing circuit for driving trasistor

Country Status (1)

Country Link
JP (1) JPS5585267A (en)

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