GB628575A - Improvements in or relating to electric timing systems - Google Patents

Improvements in or relating to electric timing systems

Info

Publication number
GB628575A
GB628575A GB26597/46A GB2659746A GB628575A GB 628575 A GB628575 A GB 628575A GB 26597/46 A GB26597/46 A GB 26597/46A GB 2659746 A GB2659746 A GB 2659746A GB 628575 A GB628575 A GB 628575A
Authority
GB
United Kingdom
Prior art keywords
potential
valve
condenser
resistance
relay
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
GB26597/46A
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.)
Cutler Hammer Europe Ltd
Original Assignee
Igranic Electric Co 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 Igranic Electric Co Ltd filed Critical Igranic Electric Co Ltd
Publication of GB628575A publication Critical patent/GB628575A/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
    • H03K17/28—Modifications for introducing a time delay before switching
    • H03K17/288—Modifications for introducing a time delay before switching in tube switches
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/18—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual dc motor
    • H02P1/20—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual dc motor by progressive reduction of resistance in series with armature winding

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Particle Accelerators (AREA)
  • Electron Sources, Ion Sources (AREA)
  • X-Ray Techniques (AREA)

Abstract

628,575. Electric control systems. IGRANIC ELECTRIC CO., Ltd. Sept. 4, 1946, No. 26597. Convention date, Sept. 4, 1945. [Class 38 (iv)] [Also in Groups XXXVII and XL (c)] Condenser arrangements; switching control.- To obtain a linear change of voltage with time for tuning the energization of a relay a condenser is charged while the voltage applied to the charging circuit is being increased in accordance with the state of charge. A resistance 18 is connected in series with a high vacuum valve 17 and a condenser 20 in series with a resistance 19 is connected across the resistance 18. The control electrode 17c of the valve is connected to the junction 19, 20. When this valve circuit is closed at 13c across the source 10, 11 the cathode 17a rises in potential to A<SP>1</SP>, Fig. 2, and the condenser 20 begins to charge. Every increase of'potential of electrode 17c increases the conductivity of the valve so that the potential drop across resistance 18 rises as at A, Fig. 2. Curve B shows the potential of the control electrode 17c and either of these variables may be used for timing. Fig. 1 shows a relay 15 energized through an electron valve 16 of which the control electrode is subject to the potential of the cathode 17a, the potential of cathode 16a being adjusted by potentiometer 21 to determine the interval between operation of a switch 24 and energization of the relay 15.
GB26597/46A 1945-09-04 1946-09-04 Improvements in or relating to electric timing systems Expired GB628575A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US614134A US2602888A (en) 1945-09-04 1945-09-04 Electronic timer

Publications (1)

Publication Number Publication Date
GB628575A true GB628575A (en) 1949-08-31

Family

ID=24459992

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26597/46A Expired GB628575A (en) 1945-09-04 1946-09-04 Improvements in or relating to electric timing systems

Country Status (2)

Country Link
US (1) US2602888A (en)
GB (1) GB628575A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2617024A (en) * 1948-08-31 1952-11-04 Rca Corp Time delay circuits

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124723A (en) * 1964-03-10 Stutz
US2760066A (en) * 1946-07-11 1956-08-21 Leo P Delsasso Delayed tripping circuit
US2650514A (en) * 1950-06-01 1953-09-01 Robotti Joseph Reed organ wind supply
US3013144A (en) * 1959-09-04 1961-12-12 Westinghouse Electric Corp Arc-welding apparatus
US3231809A (en) * 1961-12-01 1966-01-25 Galion Jeffrey Mfg Co Motor acceleration control with controlled rectifier circuit
US3818299A (en) * 1968-04-27 1974-06-18 Bosch Gmbh Robert Motor arrangement
US3649896A (en) * 1970-02-12 1972-03-14 Gen Electric Control circuits for an electric tractor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL65992B (en) * 1931-05-21
BE411610A (en) * 1934-10-05
US2203468A (en) * 1938-02-12 1940-06-04 Rca Corp Regulator for time delay circuits
US2279007A (en) * 1939-03-25 1942-04-07 Rca Corp Time delay circuit and relaxation oscillator
US2372005A (en) * 1942-06-22 1945-03-20 Gen Electric Electric control circuit
US2406429A (en) * 1943-11-20 1946-08-27 Westinghouse Electric Corp Electronic control system
US2495919A (en) * 1944-08-29 1950-01-31 Hazeltine Research Inc Quick-reset time-delay electronic control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2617024A (en) * 1948-08-31 1952-11-04 Rca Corp Time delay circuits

Also Published As

Publication number Publication date
US2602888A (en) 1952-07-08

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