GB593482A - Improvements in or relating to thermionic time delay circuits for electric pulses - Google Patents

Improvements in or relating to thermionic time delay circuits for electric pulses

Info

Publication number
GB593482A
GB593482A GB30945A GB30945A GB593482A GB 593482 A GB593482 A GB 593482A GB 30945 A GB30945 A GB 30945A GB 30945 A GB30945 A GB 30945A GB 593482 A GB593482 A GB 593482A
Authority
GB
United Kingdom
Prior art keywords
valve
pulse
capacitor
thermionic
relating
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
GB30945A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Filing date
Publication date
Priority to BE477834D priority Critical patent/BE477834A/fr
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to ES0178439A priority patent/ES178439A1/en
Publication of GB593482A publication Critical patent/GB593482A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/37—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of gas-filled tubes, e.g. astable trigger circuits

Landscapes

  • Fire Alarms (AREA)

Abstract

593,482. Pulse delaying and modulation circuits. STANDARD TELEPHONES & CABLES, Ltd., CHATTERJEA, P. K., and HOUGHTON, L. W. Jan. 3, 1945, No. 309. [Class 40 (v)] In a pulse-delaying circuit in which a first gas-filled valve 6 is biassed to be normally non-conducting and a second valve 7 conducting, the pulse fires the first valve momentarily to discharge a capacitor 18, thereby extinguishing valve 7, the capacitor 18 recharging over resistor 9 to re-fire valve 7 after a delay, a rectangular pulse being derived from the second valve. The negative square wave from the anode of the second valve may be differentiated over capacitor-resistor combination 26, 27, the delayed pulse being passed through a shaping circuit 28. A modulating voltage may be applied over terminal 22 to vary the grid potential of valve 7 and hence the width of the pulse from the anode of valve 7 and the delay of the pulse from shaping circuit 28. Specification 593,461 and U.S.A. Specification 2,244,513 are referred to.
GB30945A 1945-01-03 1945-01-03 Improvements in or relating to thermionic time delay circuits for electric pulses Expired GB593482A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BE477834D BE477834A (en) 1945-01-03
ES0178439A ES178439A1 (en) 1945-01-03 1947-06-14 IMPROVEMENTS IN OR RELATED TO SIGNALING SYSTEMS BY ELECTRICAL IMPULSES

Publications (1)

Publication Number Publication Date
GB593482A true GB593482A (en) 1947-10-17

Family

ID=1593315

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30945A Expired GB593482A (en) 1945-01-03 1945-01-03 Improvements in or relating to thermionic time delay circuits for electric pulses

Country Status (1)

Country Link
GB (1) GB593482A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1012327B (en) * 1954-01-30 1957-07-18 Deutsche Bundespost Arrangement for the time shifting of periodic or non-periodic pulses

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1012327B (en) * 1954-01-30 1957-07-18 Deutsche Bundespost Arrangement for the time shifting of periodic or non-periodic pulses

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