JPS5534813A - Relay-driving circuit with fall-safe output - Google Patents

Relay-driving circuit with fall-safe output

Info

Publication number
JPS5534813A
JPS5534813A JP10626278A JP10626278A JPS5534813A JP S5534813 A JPS5534813 A JP S5534813A JP 10626278 A JP10626278 A JP 10626278A JP 10626278 A JP10626278 A JP 10626278A JP S5534813 A JPS5534813 A JP S5534813A
Authority
JP
Japan
Prior art keywords
relay
transistor
output
failure
fall
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
JP10626278A
Other languages
Japanese (ja)
Other versions
JPS6032403B2 (en
Inventor
Eiichi Toyoda
Akiyoshi Hayashi
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 JP53106262A priority Critical patent/JPS6032403B2/en
Publication of JPS5534813A publication Critical patent/JPS5534813A/en
Publication of JPS6032403B2 publication Critical patent/JPS6032403B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

PURPOSE: To actuate a failure-sensing relay by driving individual output relays by an alternating signals from individual logic circuits, obtaining "or" of currents flowing into these output relays, taking out only an ac component of the "or", and rectifying it.
CONSTITUTION: When the circuit 11 among logic circuits 11W1N fails, and high- level dc output is sent out to an amplification transistor 21 to turn it on, or when the transistor 21 fails and its output, which is used to drive an output relay 31, is continuously applied to the relay 31, a bias current is continuously flown through a transistor 4, and it is turned on. Therefore, a current does not flow to a failure- sensing relay 8, which is connected to the transistor 4 through a transistor 5, a transformer 6, and a rectifier 7, and the relay is turned off, thereby the failure can be sensed.
COPYRIGHT: (C)1980,JPO&Japio
JP53106262A 1978-09-01 1978-09-01 Fail-safe signal output device Expired JPS6032403B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53106262A JPS6032403B2 (en) 1978-09-01 1978-09-01 Fail-safe signal output device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53106262A JPS6032403B2 (en) 1978-09-01 1978-09-01 Fail-safe signal output device

Publications (2)

Publication Number Publication Date
JPS5534813A true JPS5534813A (en) 1980-03-11
JPS6032403B2 JPS6032403B2 (en) 1985-07-27

Family

ID=14429174

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53106262A Expired JPS6032403B2 (en) 1978-09-01 1978-09-01 Fail-safe signal output device

Country Status (1)

Country Link
JP (1) JPS6032403B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01150608U (en) * 1988-04-02 1989-10-18
JPH0614202U (en) * 1992-07-27 1994-02-22 勝也 平岡 Sidewalk concrete panel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4734142U (en) * 1971-04-29 1972-12-16

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4734142U (en) * 1971-04-29 1972-12-16

Also Published As

Publication number Publication date
JPS6032403B2 (en) 1985-07-27

Similar Documents

Publication Publication Date Title
JPS52114915A (en) Dc-dc converter
NO902819D0 (en) TRANSFER WITH GENERATION OF IS VALUE FOR STREAM.
JPS5534813A (en) Relay-driving circuit with fall-safe output
JPS5577372A (en) Multi-output converter
JPS5556495A (en) A.c. motor controller
JPS5544038A (en) Flash device for car
JPS5499922A (en) Switching regulator
JPS54161850A (en) Magnetic bubble device
JPS5295459A (en) Hanging up magnet control device
JPS558249A (en) Free wheeling circuit
JPS5726176A (en) Power source device for electric prevention for corrosion provided with switch controlling output current
JPS5376339A (en) Trouble detecting device of induction motor
JPS5535556A (en) Two-wire system alternating current switching contactless switch
JPS5527979A (en) Voltage frequency detector of ac power supply
JPS56134832A (en) Two-wire photoelectric switch for alternating current and direct current
JPS54129344A (en) Protective device for dc power source
JPS5317924A (en) Dc-dc converter
JPS54147449A (en) Protective circuit
JPS5340824A (en) Combining circuit
JPS54124248A (en) Constant-voltage circuit with reset signal generating circuit
JPS5387159A (en) Relay circuit
JPS52150519A (en) Power converter
JPS5317259A (en) Contactless output relay
JPS5356906A (en) Ring trip circuit
JPS5576479A (en) Driving circuit for printer electromagnet