US2129037A - Detector - Google Patents

Detector Download PDF

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Publication number
US2129037A
US2129037A US83704A US8370436A US2129037A US 2129037 A US2129037 A US 2129037A US 83704 A US83704 A US 83704A US 8370436 A US8370436 A US 8370436A US 2129037 A US2129037 A US 2129037A
Authority
US
United States
Prior art keywords
grids
detector
valve
grid
push
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 - Lifetime
Application number
US83704A
Other languages
English (en)
Inventor
Schlesinger Kurt
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.)
Loewe Opta GmbH
Original Assignee
Loewe Opta GmbH
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
Priority to NL43274D priority Critical patent/NL43274C/xx
Priority to US751927A priority patent/US2072315A/en
Priority claimed from US751927A external-priority patent/US2072315A/en
Priority to GB32403/34A priority patent/GB450241A/en
Priority to GB11261/36A priority patent/GB450351A/en
Application filed by Loewe Opta GmbH filed Critical Loewe Opta GmbH
Priority to US83704A priority patent/US2129037A/en
Application granted granted Critical
Publication of US2129037A publication Critical patent/US2129037A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/14—Demodulation of amplitude-modulated oscillations by means of non-linear elements having more than two poles
    • H03D1/16—Demodulation of amplitude-modulated oscillations by means of non-linear elements having more than two poles of discharge tubes

Definitions

  • the present invention is an improvement of grid-current detector arrangements preferably of those operated in push-pull connection and is a division of Patent 2,072,315.
  • therectifier valve By the arrangement according to the present invention it is possible by special construction of therectifier valve to have in fact a sufficient blocking of the modulation potential against short-circuiting by the high frequency input coil of the detector valve and at the same time good efiiciency.
  • the present invention is relative to a particlular embodiment of a grid current detector arrangement, more particularly for television purposes, wherein a detector valve is employed having control electrodes comprising at least one grid, which is insulated completely or incompletely from the inner electronic discharge space and is furnished with a conductive layer arranged on the insulating coating thereof.
  • a double grid detector valve is employed in push-pull fashion in connection with transformer input coupling.
  • valve l9 having an insulated grid, or preferably two insulated grids 20, 2
  • Valves of this character have for television purposes, in accordance with the invention, the following advantages.
  • transformer coil 4 may be applied directly and unweakened to the grids 20, 2
  • a push-pull grid-current detector arrangement more particularly for television purposes comprising a detector valve having two separate grids connected in push-pull, anda secondary of an input transformer, said two grids being arranged with the same amplification factor opposite a common cathode which is directly earthed and being insulated from the inner electronic discharge space by an insulating coating and furnished with a conductive coating arranged on the insulating coating, and common to both grids, the ends of said secondary being earthed in its midpoint and connected directly to the grids, said conductive coating being connected to the oathode of said valve.
  • a push-pull grid-current detector arrangement more particularly for television purposes comprising a detector valve having two separate grids connected in push-pull, and a secondary of an input transformer, said two grids being arranged with the same amplification factor oppoan input transformer, said two grids being arranged With the same amplification factor opposite a common cathode which is directly earthed and being insulated from the inner electronic discharge space by an insulating coating and furnished with a conductive coating arranged on the insulating coating thereof, and common to both grids, the ends of said secondary earthed in its midpoint connected directly to the grids, said conductive coating being directly connected to the cathode of said valve, said insulating coating consisting of a semi-conductive material.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Measurement Of Radiation (AREA)
  • Testing Relating To Insulation (AREA)
US83704A 1933-11-10 1936-06-05 Detector Expired - Lifetime US2129037A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL43274D NL43274C (xx) 1933-11-10
US751927A US2072315A (en) 1933-11-10 1934-11-07 Push-pull detector
GB32403/34A GB450241A (en) 1933-11-10 1934-11-10 Push-pull detector for television purposes
GB11261/36A GB450351A (en) 1933-11-10 1934-11-10 Grid-current detector for television purposes
US83704A US2129037A (en) 1933-11-10 1936-06-05 Detector

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE450241X 1933-11-10
US751927A US2072315A (en) 1933-11-10 1934-11-07 Push-pull detector
US83704A US2129037A (en) 1933-11-10 1936-06-05 Detector

Publications (1)

Publication Number Publication Date
US2129037A true US2129037A (en) 1938-09-06

Family

ID=32045522

Family Applications (1)

Application Number Title Priority Date Filing Date
US83704A Expired - Lifetime US2129037A (en) 1933-11-10 1936-06-05 Detector

Country Status (3)

Country Link
US (1) US2129037A (xx)
GB (2) GB450351A (xx)
NL (1) NL43274C (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462153A (en) * 1945-05-28 1949-02-22 Hilmar A Andresen Electron discharge device
US3418882A (en) * 1966-09-02 1968-12-31 Max K. Brand Key making machine for tubular-type key

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462153A (en) * 1945-05-28 1949-02-22 Hilmar A Andresen Electron discharge device
US3418882A (en) * 1966-09-02 1968-12-31 Max K. Brand Key making machine for tubular-type key

Also Published As

Publication number Publication date
NL43274C (xx)
GB450241A (en) 1936-07-10
GB450351A (en) 1936-07-10

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