GB711072A - Improvements in or relating to thermionic valve circuits - Google Patents

Improvements in or relating to thermionic valve circuits

Info

Publication number
GB711072A
GB711072A GB2500351A GB2500351A GB711072A GB 711072 A GB711072 A GB 711072A GB 2500351 A GB2500351 A GB 2500351A GB 2500351 A GB2500351 A GB 2500351A GB 711072 A GB711072 A GB 711072A
Authority
GB
United Kingdom
Prior art keywords
rectangular pulses
signals
suppressor grid
resistor
returned
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
GB2500351A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB2500351A priority Critical patent/GB711072A/en
Priority to FR1064894D priority patent/FR1064894A/en
Priority to DEG10053A priority patent/DE1010106B/en
Publication of GB711072A publication Critical patent/GB711072A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/08—Separation of synchronising signals from picture signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Particle Accelerators (AREA)

Abstract

711,072. Television. GENERAL ELECTRIC CO., Ltd., and GRIFFITH, G. W. S. Sept. 19, 1952 [Oct. 25, 1951, No. 25003/51. Class 40 (3). [Also in Group XL(c)] A circuit for amplifying television or like signals, i.e. signals comprising rectangular pulses of one polarity with respect to a datum level and further components of opposite polarity, incorporates a single pentode 1 and is arranged to provide two outputs, one from across cathode load 5, 6 and corresponding to the whole of the input signal and the other from across anode load 7 and corresponding to the rectangular pulses. The input signal is applied at terminals 2 with the rectangular pulses in a negative-going direction, and the effective suppressor grid bias due to the drop across resistors 3, 4 and 5 is selected so that the anode current is cut off for input signals positive in excess of the datum level. Accordingly anode current is allowed to flow only during the rectangular pulses to produce a corresponding output voltage across resistor 7. In the case of a pentode having a short suppressor grid base, the suppressor grid may be returned to a voltage positive with respect to earth obtained from a potentiometer connected across voltage source 8. Also the screen decoupling condenser 10 may be returned to cathode and resistor 4 omitted. Suitable component values are given for the circuit shown.
GB2500351A 1951-10-25 1951-10-25 Improvements in or relating to thermionic valve circuits Expired GB711072A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB2500351A GB711072A (en) 1951-10-25 1951-10-25 Improvements in or relating to thermionic valve circuits
FR1064894D FR1064894A (en) 1951-10-25 1952-10-20 Thermionic lamp circuit
DEG10053A DE1010106B (en) 1951-10-25 1952-10-24 Circuit for the simultaneous amplification of video signals and separation of the square-wave pulses they contain

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2500351A GB711072A (en) 1951-10-25 1951-10-25 Improvements in or relating to thermionic valve circuits

Publications (1)

Publication Number Publication Date
GB711072A true GB711072A (en) 1954-06-23

Family

ID=10220643

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2500351A Expired GB711072A (en) 1951-10-25 1951-10-25 Improvements in or relating to thermionic valve circuits

Country Status (3)

Country Link
DE (1) DE1010106B (en)
FR (1) FR1064894A (en)
GB (1) GB711072A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1141326B (en) * 1959-07-17 1962-12-20 Telefunken Patent Video frequency amplifier stage in cathode follower circuit

Also Published As

Publication number Publication date
FR1064894A (en) 1954-05-18
DE1010106B (en) 1957-06-13

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