GB1364501A - Electronic switch supervision - Google Patents

Electronic switch supervision

Info

Publication number
GB1364501A
GB1364501A GB4913771A GB4913771A GB1364501A GB 1364501 A GB1364501 A GB 1364501A GB 4913771 A GB4913771 A GB 4913771A GB 4913771 A GB4913771 A GB 4913771A GB 1364501 A GB1364501 A GB 1364501A
Authority
GB
United Kingdom
Prior art keywords
pulse
conducting
rectifier
signal
switching devices
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
GB4913771A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1364501A publication Critical patent/GB1364501A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/72—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region
    • H03K17/73—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region for dc voltages or currents
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/35—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region
    • H03K3/352—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region the devices being thyristors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H01H9/167—Circuits for remote indication

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Protection Of Static Devices (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Rectifiers (AREA)

Abstract

1364501 Semi-conductor switching circuits PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 22 Oct 1971 [22 Oct 1970] 49137/71 Heading H3T [Also in Division H2] An arrangement for supervising a plurality of switching devices S1 ... Sn each of which is connected to one side of a respective load B1 ... Bn, e.g. coils for moving printing mallets in a line printer, the other side of each load being connected to a supply source V1 through a common controlled rectifier CR, which after having been rendered conducting by a starting pulse C1 can only be rendered non-conducting by an extinguishing pulse C2 when the current through the rectifier CR has fallen to a low value due to all switching devices being open or non-conducting, is provided with a detector circuit which detects when an extinguishing pulse fails to render the rectifier non-conducting because the current through the rectifier is above the low value due to one or more of the switching devices remaining closed or conducting. When all the switching devices S1 ... Sn are open, a small current flows through the rectifier CR and an impedance Z. When the extinguishing pulse C2 is not able to render the rectifier CR non-conducting, the voltage produced by the small current through the impedance Z remains and a threshold device 3 is unable to provide a reset signal A to a flip-flop memory device FF. The extinguishing pulse C2 is also applied to a pulse shaper 4 which provides a time pulse B, the leading edge of which sets the device FF to provide a signal FF1 to an AND gate 5. The pulse B is also applied to an invertor input of the gate 5 so that when the extingushing pulse C1 ceases, without the flip-flop having been reset, the AND gate provides a signal, e.g. an alarm signal, or a signal effective to stop any further starting signal and to disconnect the supply V1,
GB4913771A 1970-10-22 1971-10-22 Electronic switch supervision Expired GB1364501A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7015436A NL7015436A (en) 1970-10-22 1970-10-22

Publications (1)

Publication Number Publication Date
GB1364501A true GB1364501A (en) 1974-08-21

Family

ID=19811350

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4913771A Expired GB1364501A (en) 1970-10-22 1971-10-22 Electronic switch supervision

Country Status (5)

Country Link
US (1) US3717863A (en)
JP (1) JPS536835B1 (en)
FR (1) FR2113071A5 (en)
GB (1) GB1364501A (en)
NL (1) NL7015436A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4959513A (en) * 1972-10-05 1974-06-10
SE392301B (en) * 1974-10-18 1977-03-21 Rydborn S A O APPARATUS FOR DETECTING THE MOVEMENT OF ONE OR SEVERAL FORMS
US4274156A (en) * 1978-01-18 1981-06-16 Bird Electronic Corporation Monitor for RF transmitter
JPS5575260U (en) * 1978-11-17 1980-05-23

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1931862A (en) * 1927-05-16 1933-10-24 Felten Karl High tension switch
US2129143A (en) * 1936-01-06 1938-09-06 Weston Electrical Instr Corp Arc detector and suppressor
US2459186A (en) * 1943-07-19 1949-01-18 Sherman Ralph Testing and protection of electrical distribution systems
US2701965A (en) * 1946-12-31 1955-02-15 Sherman Alex Maintenance of conductivity in electrical distribution systems
US3215996A (en) * 1962-08-21 1965-11-02 Schwartz Melvin High speed circuit interruption detector
DE1563824A1 (en) * 1966-07-19 1970-05-14 Standard Elek K Lorenz Ag Electronic message entry
US3524179A (en) * 1967-11-13 1970-08-11 Burroughs Corp Audible multiswitch transition detector
US3548398A (en) * 1968-01-11 1970-12-15 Walter E Strimling Switch position and continuity indicator for a pair of heating circuits
US3662372A (en) * 1969-04-23 1972-05-09 Marvin J Levy Monitoring system for door stations

Also Published As

Publication number Publication date
JPS536835B1 (en) 1978-03-11
DE2151230B2 (en) 1976-06-16
JPS478710A (en) 1972-05-08
DE2151230A1 (en) 1972-04-27
FR2113071A5 (en) 1972-06-23
NL7015436A (en) 1972-04-25
US3717863A (en) 1973-02-20

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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