GB848047A - Time delay relay - Google Patents

Time delay relay

Info

Publication number
GB848047A
GB848047A GB371659A GB371659A GB848047A GB 848047 A GB848047 A GB 848047A GB 371659 A GB371659 A GB 371659A GB 371659 A GB371659 A GB 371659A GB 848047 A GB848047 A GB 848047A
Authority
GB
United Kingdom
Prior art keywords
transistor
time delay
relay
current
capacitor
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
GB371659A
Inventor
William Franklin Horton
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.)
Lear Inc
Original Assignee
Lear Inc
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 Lear Inc filed Critical Lear Inc
Priority to GB371659A priority Critical patent/GB848047A/en
Publication of GB848047A publication Critical patent/GB848047A/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

Landscapes

  • Relay Circuits (AREA)

Abstract

848,047. Transistor relay circuits. LEAR Inc. Feb. 3, 1959, No. 3716/59. Class 40(6). A time delay apparatus comprises a transistor associated with a time delay network which, upon switching on the apparatus, delays the build-up of transistor current, the current being used to operate a relay arranged, when operated, to provide itself with a holding circuit independent of the transistor and to restore the time delay circuit to its initial condition so that the operation can be reinitiated without delay. In the figure, the operation of contact 10 causes a capacitor 20 to charge through resistor 28 until the resulting bias applied to the transistor causes sufficient collector current to flow to operate a relay 30. Contact 36 thereupon provides a holding circuit for the relay and completes a discharge path for the capacitor. Compensation for changes in temperature may be effected by connecting a temperature dependant resistor in series with resistors 18 or 28.
GB371659A 1959-02-03 1959-02-03 Time delay relay Expired GB848047A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB371659A GB848047A (en) 1959-02-03 1959-02-03 Time delay relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB371659A GB848047A (en) 1959-02-03 1959-02-03 Time delay relay

Publications (1)

Publication Number Publication Date
GB848047A true GB848047A (en) 1960-09-14

Family

ID=9763617

Family Applications (1)

Application Number Title Priority Date Filing Date
GB371659A Expired GB848047A (en) 1959-02-03 1959-02-03 Time delay relay

Country Status (1)

Country Link
GB (1) GB848047A (en)

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