GB1444537A - Electrical switching circuit for a timer - Google Patents

Electrical switching circuit for a timer

Info

Publication number
GB1444537A
GB1444537A GB3854672A GB3854672A GB1444537A GB 1444537 A GB1444537 A GB 1444537A GB 3854672 A GB3854672 A GB 3854672A GB 3854672 A GB3854672 A GB 3854672A GB 1444537 A GB1444537 A GB 1444537A
Authority
GB
United Kingdom
Prior art keywords
timer
switching circuit
electrical switching
aug
load
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
GB3854672A
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.)
United Gas Industries Ltd
Original Assignee
United Gas 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 United Gas Industries Ltd filed Critical United Gas Industries Ltd
Priority to GB3854672A priority Critical patent/GB1444537A/en
Publication of GB1444537A publication Critical patent/GB1444537A/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
    • H03K17/725—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 ac voltages or currents
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/28—Modifications for introducing a time delay before switching
    • H03K17/292—Modifications for introducing a time delay before switching in thyristor, unijunction transistor or programmable unijunction transistor switches

Landscapes

  • Control Of Combustion (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

1444537 Semi-conductor switching circuits; radio receivers UNITED GAS INDUSTRIES Ltd 17 Aug 1973 [18 Aug 1972] 38546/72 Headings H3T and H3Q Current flowing through a load 12, e.g. a TV receiver, causes a voltage drop across silicon diode network 13 ... 16 sufficient to trigger a switch, e.g. triac 20, and energize motor 21. The motor forms part of a timer for indicating how long the load is energized.
GB3854672A 1972-08-18 1972-08-18 Electrical switching circuit for a timer Expired GB1444537A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3854672A GB1444537A (en) 1972-08-18 1972-08-18 Electrical switching circuit for a timer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3854672A GB1444537A (en) 1972-08-18 1972-08-18 Electrical switching circuit for a timer

Publications (1)

Publication Number Publication Date
GB1444537A true GB1444537A (en) 1976-08-04

Family

ID=10404173

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3854672A Expired GB1444537A (en) 1972-08-18 1972-08-18 Electrical switching circuit for a timer

Country Status (1)

Country Link
GB (1) GB1444537A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2547689A1 (en) * 1983-06-16 1984-12-21 Hayashibara Ken DEVICE FOR REGULATING AN AC CIRCUIT
GB2144593A (en) * 1983-06-14 1985-03-06 Hayashibara Ken A circuit for reducing surge current

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144593A (en) * 1983-06-14 1985-03-06 Hayashibara Ken A circuit for reducing surge current
FR2547689A1 (en) * 1983-06-16 1984-12-21 Hayashibara Ken DEVICE FOR REGULATING AN AC CIRCUIT
GB2144281A (en) * 1983-06-16 1985-02-27 Hayashibara Ken A device for regulating ac current

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee