GB659799A - Improvements in or relating to pulse-operated thermionic valve apparatus, such as for example, frequency dividers, electrical counters and the like - Google Patents

Improvements in or relating to pulse-operated thermionic valve apparatus, such as for example, frequency dividers, electrical counters and the like

Info

Publication number
GB659799A
GB659799A GB131446A GB131446A GB659799A GB 659799 A GB659799 A GB 659799A GB 131446 A GB131446 A GB 131446A GB 131446 A GB131446 A GB 131446A GB 659799 A GB659799 A GB 659799A
Authority
GB
United Kingdom
Prior art keywords
pulse
capacitor
input pulses
valve
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
GB131446A
Inventor
Ivanhoe John Penfound James
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB701549A priority Critical patent/GB659837A/en
Priority to GB131446A priority patent/GB659799A/en
Priority to FR942191D priority patent/FR942191A/en
Publication of GB659799A publication Critical patent/GB659799A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K21/00—Details of pulse counters or frequency dividers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K25/00—Pulse counters with step-by-step integration and static storage; Analogous frequency dividers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/06—Generation of synchronising signals

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Manipulation Of Pulses (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

659,799. Pulse frequency dividing circuits. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Jan. 15, 1946, No; 1314. [Class 40 (vi)] In a circuit of the type in which a stepped waveform is generated under the control of input pulses to operate a triggered device, the input pulses are also applied to the triggered device to improve the timing of the output pulse. Each positive pulse applied to normally non-conducting valve V1 causes the anode potential to fall, capacitor C1 discharging over diode V2 so that upon the pulse ceasing the anode of diode V3 is carried positive, thus charging capacitor C2 from capacitor C1. When valve V1 conducts the input pulses appear across cathode resistor R3 and due to coupling resistor R2 are superimposed on the stepped waveform developed across capacitor C2, Fig. 2 (not shown), and applied to the grid of blocking oscillator V<SP>1</SP>1. Valve V<SP>1</SP>1 is thus triggered by the leading edge of an input pulse after a sufficient number of steps have been developed across capacitor C2. A similar circuit is used in the next dividing stage. Alternatively, the input pulses may be fed directly to the second stage. Specification 471,731 is referred to.
GB131446A 1946-01-15 1946-01-15 Improvements in or relating to pulse-operated thermionic valve apparatus, such as for example, frequency dividers, electrical counters and the like Expired GB659799A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB701549A GB659837A (en) 1946-01-15 1946-01-15 Improvements in or relating to pulse generating apparatus and to television apparatus in which pulse generating apparatus is utilised
GB131446A GB659799A (en) 1946-01-15 1946-01-15 Improvements in or relating to pulse-operated thermionic valve apparatus, such as for example, frequency dividers, electrical counters and the like
FR942191D FR942191A (en) 1946-01-15 1947-02-12 Thermionic lamps, pulsed actuated

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB131446A GB659799A (en) 1946-01-15 1946-01-15 Improvements in or relating to pulse-operated thermionic valve apparatus, such as for example, frequency dividers, electrical counters and the like

Publications (1)

Publication Number Publication Date
GB659799A true GB659799A (en) 1951-10-31

Family

ID=9719830

Family Applications (2)

Application Number Title Priority Date Filing Date
GB131446A Expired GB659799A (en) 1946-01-15 1946-01-15 Improvements in or relating to pulse-operated thermionic valve apparatus, such as for example, frequency dividers, electrical counters and the like
GB701549A Expired GB659837A (en) 1946-01-15 1946-01-15 Improvements in or relating to pulse generating apparatus and to television apparatus in which pulse generating apparatus is utilised

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB701549A Expired GB659837A (en) 1946-01-15 1946-01-15 Improvements in or relating to pulse generating apparatus and to television apparatus in which pulse generating apparatus is utilised

Country Status (2)

Country Link
FR (1) FR942191A (en)
GB (2) GB659799A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1046687B (en) * 1957-08-02 1958-12-18 Siemens Ag Circuit arrangement for frequency division using double base diodes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1046687B (en) * 1957-08-02 1958-12-18 Siemens Ag Circuit arrangement for frequency division using double base diodes

Also Published As

Publication number Publication date
GB659837A (en) 1951-10-31
FR942191A (en) 1949-02-01

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