GB1142166A - Electronic time sequence switch - Google Patents

Electronic time sequence switch

Info

Publication number
GB1142166A
GB1142166A GB21583/66A GB2158366A GB1142166A GB 1142166 A GB1142166 A GB 1142166A GB 21583/66 A GB21583/66 A GB 21583/66A GB 2158366 A GB2158366 A GB 2158366A GB 1142166 A GB1142166 A GB 1142166A
Authority
GB
United Kingdom
Prior art keywords
switch
motor
cam
transistor
timing circuit
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
GB21583/66A
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.)
MALLORY TIMERS Ltd
Original Assignee
MALLORY TIMERS 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 MALLORY TIMERS Ltd filed Critical MALLORY TIMERS Ltd
Publication of GB1142166A publication Critical patent/GB1142166A/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
    • H03K17/292—Modifications for introducing a time delay before switching in thyristor, unijunction transistor or programmable unijunction transistor switches
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • G04F5/10—Apparatus for producing preselected time intervals for use as timing standards using electric or electronic resonators
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/07—Programme control other than numerical control, i.e. in sequence controllers or logic controllers where the programme is defined in the fixed connection of electrical elements, e.g. potentiometers, counters, transistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H43/00—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
    • H01H43/02—Details
    • H01H43/022—Bases; Housings; Mountings

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Motor And Converter Starters (AREA)
  • Measurement Of Predetermined Time Intervals (AREA)

Abstract

1,142,166. Timed switching in electric circuits. MALLORY TIMERS Ltd. May 16, 1966 [July 1, 1965], No. 21583/66. Heading G3T. A step advance mechanism for use in a time sequence switch comprises a motor 11, a rectifier circuit 20, an electronic switch 34, a timing circuit 21 and a cam 37 driven by the motor. The cam 37 is mounted on a shaft 19 and the periodicity of the timing circuit may be adjusted by rotating a shaft 17 of a variable resistor 18. On completion of each period of the timing circuit a unijunction transistor 30 is triggered and supplies a pulse to the electronic switch 34 which comprises a silicon controlled rectifier. The transistor 34 therefore conducts and is held in this state by a capacitor 27. The resistance of circuit 22 thus decreases allowing a large current to flow through and switch on the motor 11. The rotation of the cam closes a switch 36 and the transistor 34 ceases to conduct. The motor, however, continues to rotate until the cam allows the switch 36 to reopen and stop the motor in readiness for the next cycle. Instead of the variable resistor 18 a switch contacting a network of fixed and/or variable resistors may be used or the time interval may be made dependent on the resistance of a temperature sensor.
GB21583/66A 1965-07-01 1966-05-16 Electronic time sequence switch Expired GB1142166A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US468699A US3350606A (en) 1965-07-01 1965-07-01 Means for intermittently driving a cam-carrying shaft

Publications (1)

Publication Number Publication Date
GB1142166A true GB1142166A (en) 1969-02-05

Family

ID=23860874

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21583/66A Expired GB1142166A (en) 1965-07-01 1966-05-16 Electronic time sequence switch

Country Status (3)

Country Link
US (1) US3350606A (en)
DE (1) DE1665053A1 (en)
GB (1) GB1142166A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3405352A (en) * 1965-10-21 1968-10-08 Allis Chalmers Mfg Co Square wave switching circuit having sharp turn-on and turn-off characteristics
US3480792A (en) * 1967-08-16 1969-11-25 Amerace Esna Corp Programmer
US3525021A (en) * 1968-10-07 1970-08-18 Joy Mfg Co Precipitator rapper control
US3780360A (en) * 1971-12-15 1973-12-18 David Green Ass Ltd Shaft positioning means
US4766331A (en) * 1987-09-18 1988-08-23 Reliance Time Controls, Inc. Timer switch with auxiliary actuator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045150A (en) * 1958-10-13 1962-07-17 Leach Corp Time delay circuit
US3114079A (en) * 1961-05-31 1963-12-10 Gen Electric Automatic circuit recloser with improved coordinating ability
US3188502A (en) * 1961-11-02 1965-06-08 Bendix Corp Electrical cycling timer
US3193711A (en) * 1962-01-18 1965-07-06 Collins Radio Co Step-start circuit
US3182228A (en) * 1962-03-05 1965-05-04 Gen Motors Corp Circuit for repeatedly energizing a load
US3211958A (en) * 1962-03-08 1965-10-12 Gen Electric Tripping arrangement for an electric circuit breaker
US3195029A (en) * 1962-09-10 1965-07-13 Texas Instruments Inc Series motor control

Also Published As

Publication number Publication date
DE1665053A1 (en) 1970-10-08
US3350606A (en) 1967-10-31

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