GB1143687A - - Google Patents

Info

Publication number
GB1143687A
GB1143687A GB1143687DA GB1143687A GB 1143687 A GB1143687 A GB 1143687A GB 1143687D A GB1143687D A GB 1143687DA GB 1143687 A GB1143687 A GB 1143687A
Authority
GB
United Kingdom
Prior art keywords
supply
load
oscillator
dec
conduct
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
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.)
Publication date
Publication of GB1143687A publication Critical patent/GB1143687A/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
    • H03K17/722—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 with galvanic isolation between the control circuit and the output circuit
    • H03K17/723—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 with galvanic isolation between the control circuit and the output circuit using transformer coupling
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/097—Supervising of traffic control systems, e.g. by giving an alarm if two crossing streets have green light simultaneously
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electronic Switches (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

1,143,687. Road-traffic signalling apparatus. E. W. BLISS CO. 5 Dec., 1967 [7 Dec., 1966], 55202/67. Heading G4Q. [Also in Divisions H2 and H3] Simultaneous energization of load A and load B from a common A.C. supply V is prevented by an anti-coincidence circuit adapted to interrupt the A.C. supply. The loads may be road traffic signal lamps energized through respective switches S1 and S2, which may be relays or transistors, and each load circuit includes a bidirectional semi-conductor device 76 which is maintained conductive by oscillations from oscillator H. If both switches S1 and S2 are closed simultaneously, the A.C. supply is connected to rectifier 24 in units C and D, thereby making both transistors 10 conduct; this causes transistor 36 (unit F) to cut off and transistor 44 (unit G) to conduct, thereby preventing the RC oscillator H from oscillating. This prevents each SCR 72 in units I and J from conducting and thereby interrupts the A.C. supply through diode bridge 74 to the gate electrode 104 of the semi-conductor 76 which is therefore blocked and inhibits energization of the load.
GB1143687D 1966-12-07 Expired GB1143687A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US59993266A 1966-12-07 1966-12-07

Publications (1)

Publication Number Publication Date
GB1143687A true GB1143687A (en) 1900-01-01

Family

ID=24401709

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1143687D Expired GB1143687A (en) 1966-12-07

Country Status (4)

Country Link
US (1) US3457430A (en)
DE (1) DE1537043A1 (en)
FR (1) FR1562854A (en)
GB (1) GB1143687A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4490771A (en) * 1981-12-09 1984-12-25 Black & Decker Inc. Control circuit arrangement for an electromagnetically operated power tool

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3515998A (en) * 1967-12-08 1970-06-02 Ibm Real-time detection of latch resolution using threshold means
US3543139A (en) * 1968-08-21 1970-11-24 Electronic Associates Multiple regulated outputs in a single pulse regulator
US3801832A (en) * 1969-06-02 1974-04-02 Philips Corp Solid-state relay
US3806739A (en) * 1971-06-02 1974-04-23 Matsushita Electric Ind Co Ltd Contactless switch
US3740587A (en) * 1971-09-20 1973-06-19 Gen Electric Solid state unipole relay
FR2206609B1 (en) * 1972-11-15 1975-11-07 Trt Telecom Radio Electr
US4242554A (en) * 1978-05-31 1980-12-30 General Electric Company Effective time ratio browning in a microwave oven employing high thermal mass browning unit
US4227062A (en) * 1978-05-31 1980-10-07 General Electric Company Optimum time ratio control system for microwave oven including food surface browning capability
US4188520A (en) * 1978-05-31 1980-02-12 General Electric Company Effective concurrent microwave heating and electrical resistance heating in a countertop microwave oven
US4196330A (en) * 1978-06-01 1980-04-01 General Electric Company Combination oven fully utilizing the current-supplying capability of a power source
US4198553A (en) * 1978-06-01 1980-04-15 General Electric Company Combination oven fully utilizing the capability of a limited power source
WO1981000795A1 (en) * 1979-09-11 1981-03-19 Towmotor Corp Method of and means for controlling electrical devices
US4564733A (en) * 1983-08-11 1986-01-14 Whirlpool Corporation Current limiting control circuit for induction range
US4876468A (en) * 1986-10-16 1989-10-24 Square D Company Thyristor driver turn-off circuit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE26150E (en) * 1958-07-03 1967-01-31 Traffic controllers khfi.oy i.ng static, logic control lllwlnts
US3107306A (en) * 1959-07-01 1963-10-15 Westinghouse Electric Corp Anticoincident pulse responsive circuit comprising logic components
US3240948A (en) * 1962-06-29 1966-03-15 Johnson Service Co Electronic control responsive to opposite senses of condition deviation
US3278758A (en) * 1962-12-17 1966-10-11 Int Standard Electric Corp Anti-coincidence logic circuits
US3337741A (en) * 1964-10-14 1967-08-22 Systems Matrix Inc Semiconductor-controlled power circuit having a single-pole, doublethrow switching action

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4490771A (en) * 1981-12-09 1984-12-25 Black & Decker Inc. Control circuit arrangement for an electromagnetically operated power tool

Also Published As

Publication number Publication date
DE1537043A1 (en) 1969-12-04
US3457430A (en) 1969-07-22
FR1562854A (en) 1969-04-11

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