CA935544A - Power failure detection circuit - Google Patents

Power failure detection circuit

Info

Publication number
CA935544A
CA935544A CA113928A CA113928A CA935544A CA 935544 A CA935544 A CA 935544A CA 113928 A CA113928 A CA 113928A CA 113928 A CA113928 A CA 113928A CA 935544 A CA935544 A CA 935544A
Authority
CA
Canada
Prior art keywords
detection circuit
power failure
failure detection
power
circuit
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.)
Expired
Application number
CA113928A
Other languages
English (en)
Other versions
CA113928S (en
Inventor
O. Halfhill Martin
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.)
Information Storage Systems Inc
Original Assignee
Information Storage Systems Inc
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 Information Storage Systems Inc filed Critical Information Storage Systems Inc
Application granted granted Critical
Publication of CA935544A publication Critical patent/CA935544A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Rotational Drive Of Disk (AREA)
  • Control Of Linear Motors (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
CA113928A 1970-06-29 1971-05-26 Power failure detection circuit Expired CA935544A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5063170A 1970-06-29 1970-06-29

Publications (1)

Publication Number Publication Date
CA935544A true CA935544A (en) 1973-10-16

Family

ID=21966403

Family Applications (1)

Application Number Title Priority Date Filing Date
CA113928A Expired CA935544A (en) 1970-06-29 1971-05-26 Power failure detection circuit

Country Status (6)

Country Link
US (1) US3629679A (ja)
JP (1) JPS51262B1 (ja)
CA (1) CA935544A (ja)
FR (1) FR2100028A5 (ja)
GB (1) GB1359511A (ja)
NL (1) NL163040C (ja)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49117008A (ja) * 1973-03-09 1974-11-08
JPS5916330B2 (ja) * 1974-02-08 1984-04-14 日本ビクター株式会社 回転記録媒体を用いる記録再生装置におけるヘツド待避装置
JPS575738Y2 (ja) * 1979-07-19 1982-02-03
JPS55105448U (ja) * 1980-02-15 1980-07-23
JPS586560A (ja) * 1981-06-30 1983-01-14 Fujitsu Ltd 磁気デイスク装置
JPS5845670A (ja) * 1981-09-07 1983-03-16 Matsushita Electric Ind Co Ltd 磁気デイスク装置
US4371903A (en) * 1981-09-28 1983-02-01 Dma Systems Corporation Emergency head retract system for magnetic disc drives
FR2528213B1 (fr) * 1982-06-03 1987-12-18 Tandon Corp Dispositif de memoire a disque magnetique
JPS59192160U (ja) * 1983-06-07 1984-12-20 沖電気工業株式会社 感光ドラム帯電装置
JPS60136976A (ja) * 1983-12-26 1985-07-20 Toshiba Corp 磁気ヘツド制御装置
JPS6276077A (ja) * 1985-09-30 1987-04-08 Toshiba Corp 磁気デイスク装置
US4679102A (en) * 1985-11-20 1987-07-07 Seagate Technology Method and means for parking read/write heads in a disc drive using the back-EMF of the spindle motor to operate a stepper motor
GB2187031B (en) * 1986-01-21 1990-10-17 Raymond Engineering Magnetic disc memory unit
GB2229852B (en) * 1986-01-21 1991-01-23 Raymond Engineering Magnetic disc memory unit
US4658308A (en) * 1986-03-05 1987-04-14 Miniscribe Corporation Method and apparatus for retracting head and braking motor of a disc drive device
US4786995A (en) * 1986-11-06 1988-11-22 Peripheral Technology, Inc Automatic head retract system for disk drive
US4870703A (en) * 1986-12-15 1989-09-26 Raymond Engineering Inc. Magnetic disc memory unit
US4967188A (en) * 1989-07-26 1990-10-30 Ncr Corporation Method for detecting low battery voltage in portable scanning systems
US5422808A (en) * 1993-04-20 1995-06-06 Anthony T. Catanese, Jr. Method and apparatus for fail-safe control of at least one electro-mechanical or electro-hydraulic component
US5769912A (en) * 1995-10-16 1998-06-23 Mansur Industries Inc. System and method of vapor recovery in industrial washing equipment
US6639749B1 (en) 1999-01-21 2003-10-28 Seagate Technology Llc Supplying power from a spindle motor in a disc drive system
US6859340B2 (en) 2001-03-09 2005-02-22 Seagate Technology Llc Method and device for retracting an actuator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3405337A (en) * 1965-04-13 1968-10-08 Sperry Rand Corp Fail operational control system for redundant servos with torque signal equalization
US3483455A (en) * 1967-03-30 1969-12-09 Sperry Rand Corp Malfunction detection circuit

Also Published As

Publication number Publication date
US3629679A (en) 1971-12-21
NL163040B (nl) 1980-02-15
FR2100028A5 (ja) 1972-03-17
DE2124188A1 (ja) 1972-01-05
DE2124188B2 (de) 1975-11-20
JPS471917A (ja) 1972-01-31
JPS51262B1 (ja) 1976-01-06
GB1359511A (en) 1974-07-10
NL163040C (nl) 1980-07-15
NL7108923A (ja) 1971-12-31

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