JPS63109501A - Safety device for equipment - Google Patents

Safety device for equipment

Info

Publication number
JPS63109501A
JPS63109501A JP61256005A JP25600586A JPS63109501A JP S63109501 A JPS63109501 A JP S63109501A JP 61256005 A JP61256005 A JP 61256005A JP 25600586 A JP25600586 A JP 25600586A JP S63109501 A JPS63109501 A JP S63109501A
Authority
JP
Japan
Prior art keywords
power supply
capacitor
turn
power switch
trq
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
JP61256005A
Other languages
Japanese (ja)
Inventor
Masashi Kanetake
Gihei Oiwa
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP61256005A priority Critical patent/JPS63109501A/en
Publication of JPS63109501A publication Critical patent/JPS63109501A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To ensure the safety of an equipment by using a runaway detection circuit to detect it if a microcomputer runs away and the control of a load is disabled thereby opening the contact of a power switch and interrupting a main power supply to interrupt the power supply to the load forcibly.
CONSTITUTION: If a microcomputer 1 runs away due to a cause such as external disturbance, a signal at an output port P2 is not a normal pulse signal but latched at an L or H level. In this case, a transistor (TR)Q1 of the runaway detection circuit 2 remains turned on or off, a capacitor C1 is not charged/ discharged and a charging current to a capacitor C2 is blocked by the capacitor C1. Thus, the main power supply is interrupted in the order of turn-off of TRQ2, turn-on of TRQ3, turn-on of triac TR1, power supply to coil 3b of power switch and opened contact 3a of power switch.
COPYRIGHT: (C)1988,JPO&Japio
JP61256005A 1986-10-28 1986-10-28 Safety device for equipment Pending JPS63109501A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61256005A JPS63109501A (en) 1986-10-28 1986-10-28 Safety device for equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61256005A JPS63109501A (en) 1986-10-28 1986-10-28 Safety device for equipment

Publications (1)

Publication Number Publication Date
JPS63109501A true JPS63109501A (en) 1988-05-14

Family

ID=17286580

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61256005A Pending JPS63109501A (en) 1986-10-28 1986-10-28 Safety device for equipment

Country Status (1)

Country Link
JP (1) JPS63109501A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01265313A (en) * 1988-04-15 1989-10-23 Sanyo Electric Co Ltd Energization control system and circuit thereof for equipment
JP2009099403A (en) * 2007-10-17 2009-05-07 Panasonic Electric Works Co Ltd Electronic circuit breaker

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58117326A (en) * 1982-01-05 1983-07-12 Nissan Motor Co Ltd Preventive device for danger for automobile
JPS6057801B2 (en) * 1979-12-29 1985-12-17 Isao Minagawa

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057801B2 (en) * 1979-12-29 1985-12-17 Isao Minagawa
JPS58117326A (en) * 1982-01-05 1983-07-12 Nissan Motor Co Ltd Preventive device for danger for automobile

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01265313A (en) * 1988-04-15 1989-10-23 Sanyo Electric Co Ltd Energization control system and circuit thereof for equipment
JP2786854B2 (en) * 1988-04-15 1998-08-13 三洋電機株式会社 Power supply control circuit of compressor
JP2009099403A (en) * 2007-10-17 2009-05-07 Panasonic Electric Works Co Ltd Electronic circuit breaker

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