GB702325A - Improvements in or relating to electrical control circuits - Google Patents

Improvements in or relating to electrical control circuits

Info

Publication number
GB702325A
GB702325A GB7106/50A GB710650A GB702325A GB 702325 A GB702325 A GB 702325A GB 7106/50 A GB7106/50 A GB 7106/50A GB 710650 A GB710650 A GB 710650A GB 702325 A GB702325 A GB 702325A
Authority
GB
United Kingdom
Prior art keywords
valve
signal
gain
cathode
fed
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
GB7106/50A
Other languages
English (en)
Inventor
Ronald Thomas Clayden
Leslie Robert Free
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 GB29343/51A priority Critical patent/GB702359A/en
Priority to GB7106/50A priority patent/GB702325A/en
Priority to DEE5024A priority patent/DE912701C/de
Priority to DEE3468A priority patent/DE888263C/de
Priority to NL159946A priority patent/NL89009C/xx
Priority to FR1042804D priority patent/FR1042804A/fr
Publication of GB702325A publication Critical patent/GB702325A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/02—Volume compression or expansion in amplifiers having discharge tubes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/04—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings operated by hand
    • H03J5/12—Settings determined by a number of separately-actuated driving means which adjust the tuning element directly to desired settings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response
    • H04N5/202—Gamma control

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Feedback Control In General (AREA)
  • Television Receiver Circuits (AREA)
  • Control Of Non-Electrical Variables (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Control Of Turbines (AREA)
GB7106/50A 1950-03-22 1950-03-22 Improvements in or relating to electrical control circuits Expired GB702325A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB29343/51A GB702359A (en) 1950-03-22 1950-03-22 Improvements relating to non-linear electrical circuits
GB7106/50A GB702325A (en) 1950-03-22 1950-03-22 Improvements in or relating to electrical control circuits
DEE5024A DE912701C (de) 1950-03-22 1951-03-16 Nichtlineare elektrische Schaltung
DEE3468A DE888263C (de) 1950-03-22 1951-03-16 Elektrische Steuerschaltung
NL159946A NL89009C (xx) 1950-03-22 1951-03-20
FR1042804D FR1042804A (fr) 1950-03-22 1951-03-22 Circuit électrique de commande

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7106/50A GB702325A (en) 1950-03-22 1950-03-22 Improvements in or relating to electrical control circuits

Publications (1)

Publication Number Publication Date
GB702325A true GB702325A (en) 1954-01-13

Family

ID=40626970

Family Applications (2)

Application Number Title Priority Date Filing Date
GB29343/51A Expired GB702359A (en) 1950-03-22 1950-03-22 Improvements relating to non-linear electrical circuits
GB7106/50A Expired GB702325A (en) 1950-03-22 1950-03-22 Improvements in or relating to electrical control circuits

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB29343/51A Expired GB702359A (en) 1950-03-22 1950-03-22 Improvements relating to non-linear electrical circuits

Country Status (4)

Country Link
DE (2) DE912701C (xx)
FR (1) FR1042804A (xx)
GB (2) GB702359A (xx)
NL (1) NL89009C (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3047656A (en) * 1957-03-09 1962-07-31 Philips Corp Television background and contrast control

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2878326A (en) * 1955-09-16 1959-03-17 Bendix Aviat Corp Amplitude selective translation circuit
GB927993A (en) * 1961-03-10 1963-06-06 Emi Ltd Improvements relating to non-linear electrical circuits

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3047656A (en) * 1957-03-09 1962-07-31 Philips Corp Television background and contrast control

Also Published As

Publication number Publication date
DE888263C (de) 1953-08-31
GB702359A (en) 1954-01-13
NL89009C (xx) 1958-04-15
DE912701C (de) 1954-06-03
FR1042804A (fr) 1953-11-04

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