GB1368686A - Electrical control circuit - Google Patents

Electrical control circuit

Info

Publication number
GB1368686A
GB1368686A GB197372A GB197372A GB1368686A GB 1368686 A GB1368686 A GB 1368686A GB 197372 A GB197372 A GB 197372A GB 197372 A GB197372 A GB 197372A GB 1368686 A GB1368686 A GB 1368686A
Authority
GB
United Kingdom
Prior art keywords
voltage
control circuit
switch
inadequate
resistor
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
GB197372A
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.)
Bull HN Information Systems Italia SpA
Bull HN Information Systems Inc
Original Assignee
Honeywell Information Systems Italia SpA
Honeywell Information 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 Honeywell Information Systems Italia SpA, Honeywell Information Systems Inc filed Critical Honeywell Information Systems Italia SpA
Publication of GB1368686A publication Critical patent/GB1368686A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
    • G05F1/577—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices for plural loads

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Electronic Switches (AREA)
  • Static Random-Access Memory (AREA)

Abstract

1368686 Digital data storage HONEYWELL INFORMATION SYSTEMS Inc 14 Jan 1972 [29 March 1971] 1973/72 Heading G4A [Also in Division H2] A control circuit 10 draws a biasing current from a first source V B which it disconnects from a load 18 by opening a switch 26 when the voltage of a second source V A falls below a threshold or the biasing current disappears. An address register 12 will supply incorrect information to a store if its supply voltage V A is inadequate, therefore a control circuit 10 operates the switch 26 to shut down the feed circuit 18 of the store if the supply voltage V A is inadequate. The control circuit comprises a first transistor 30 with a base connected by a resistor 34 and Zener diode 38 to the voltage V A while its collector is fed from the voltage V B by resistor 36 and controls the base of a second transistor 32; the latter is supplied by a third voltage V C or by V A and controls the switch 26 through gate 24. The circuit is such that the load 18 will be disconnected if either V A or V B drop below predetermined values.
GB197372A 1971-03-29 1972-01-14 Electrical control circuit Expired GB1368686A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00128836A US3725675A (en) 1971-03-29 1971-03-29 Power sequencing control circuit

Publications (1)

Publication Number Publication Date
GB1368686A true GB1368686A (en) 1974-10-02

Family

ID=22437215

Family Applications (1)

Application Number Title Priority Date Filing Date
GB197372A Expired GB1368686A (en) 1971-03-29 1972-01-14 Electrical control circuit

Country Status (6)

Country Link
US (1) US3725675A (en)
JP (1) JPS5632805B2 (en)
CA (1) CA985369A (en)
DE (1) DE2215379A1 (en)
FR (1) FR2132037B1 (en)
GB (1) GB1368686A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4307455A (en) 1978-02-27 1981-12-22 Rockwell International Corporation Power supply for computing means with data protected shut-down
GB2252186A (en) * 1990-11-30 1992-07-29 Mitsubishi Electric Corp Input and input/output buffer circuits for a portable semiconductor storage device

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1429307A (en) * 1972-04-04 1976-03-24 Cav Ltd Control systems for engines
JPS578268Y2 (en) * 1973-11-27 1982-02-17
FR2304788A1 (en) * 1975-03-18 1976-10-15 Ducellier & Cie PROTECTION DEVICE FOR AN IGNITION DEVICE FOR MOTOR VEHICLES
DE2514466B2 (en) * 1975-04-03 1977-04-21 Ibm Deutschland Gmbh, 7000 Stuttgart INTEGRATED SEMI-CONDUCTOR CIRCUIT
CA1079804A (en) * 1977-03-14 1980-06-17 Ibm Canada Limited - Ibm Canada Limitee Voltage sequencing circuit for sequencing voltage to an electrical device
JPS5493351A (en) * 1977-12-30 1979-07-24 Matsushita Electric Works Ltd Timer
JPS5832535B2 (en) * 1978-05-17 1983-07-13 富士電機株式会社 delay circuit
US4236087A (en) * 1978-10-30 1980-11-25 Sperry Corporation Programmable bus driver isolation
US4266145A (en) * 1979-05-09 1981-05-05 Ncr Corporation Time dependent master reset
US4433390A (en) * 1981-07-30 1984-02-21 The Bendix Corporation Power processing reset system for a microprocessor responding to sudden deregulation of a voltage
JPS58124964A (en) * 1982-01-22 1983-07-25 Nec Corp Voltage detecting circuit
DE3377185D1 (en) * 1982-04-21 1988-07-28 Toshiba Kk Transistor circuit
US4439805A (en) * 1982-05-21 1984-03-27 Gte Automatic Electric Labs Inc. Low voltage protection circuit
US4481430A (en) * 1982-08-02 1984-11-06 Fairchild Camera & Instrument Corp. Power supply threshold activation circuit
US4736116A (en) * 1986-05-16 1988-04-05 Denning Mobile Robotics, Inc. Power-up sequencing apparatus
US5469101A (en) * 1993-11-30 1995-11-21 Hughes Aircraft Company Analog signal selection and summing circuit having multiplexing capability
US5563455A (en) * 1995-02-27 1996-10-08 Sun Microsystems, Inc. Method and apparatus for sequencing and controlling power distribution
US5949153A (en) * 1997-03-06 1999-09-07 Consolidated Natural Gas Service Company, Inc. Multi-engine controller
CN103365335A (en) * 2012-03-27 2013-10-23 鸿富锦精密工业(武汉)有限公司 Signal processing circuit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3191073A (en) * 1963-03-14 1965-06-22 Lawrence K Mooney Threshold indicator
JPS4020070Y1 (en) * 1964-07-11 1965-07-13
FR1440099A (en) * 1965-04-15 1966-05-27 Labo Cent Telecommunicat Improvements to destructively read memories operating in semi-permanent memories
US3412314A (en) * 1965-07-12 1968-11-19 Magnavox Co Cyclically regulated power supply

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4307455A (en) 1978-02-27 1981-12-22 Rockwell International Corporation Power supply for computing means with data protected shut-down
GB2252186A (en) * 1990-11-30 1992-07-29 Mitsubishi Electric Corp Input and input/output buffer circuits for a portable semiconductor storage device
US5309396A (en) * 1990-11-30 1994-05-03 Mitsubishi Denki Kabushiki Kaisha Input buffer circuit, input/output buffer circuit and portable semiconductor memory device with back-up power
GB2252186B (en) * 1990-11-30 1994-09-14 Mitsubishi Electric Corp Input buffer circuit,input/output buffer circuit and portable semiconductor storage

Also Published As

Publication number Publication date
US3725675A (en) 1973-04-03
JPS4735738A (en) 1972-11-25
FR2132037A1 (en) 1972-11-17
DE2215379A1 (en) 1972-10-05
CA985369A (en) 1976-03-09
FR2132037B1 (en) 1976-10-29
JPS5632805B2 (en) 1981-07-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee