US2164906A - Television apparatus - Google Patents

Television apparatus Download PDF

Info

Publication number
US2164906A
US2164906A US152337A US15233737A US2164906A US 2164906 A US2164906 A US 2164906A US 152337 A US152337 A US 152337A US 15233737 A US15233737 A US 15233737A US 2164906 A US2164906 A US 2164906A
Authority
US
United States
Prior art keywords
transformers
tube
television apparatus
mains
axes
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
US152337A
Inventor
Deserno Peter
Messner Maximilian
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.)
Alcatel Lucent Deutschland AG
C Lorenz AG
Original Assignee
Standard Elektrik Lorenz AG
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 Standard Elektrik Lorenz AG filed Critical Standard Elektrik Lorenz AG
Application granted granted Critical
Publication of US2164906A publication Critical patent/US2164906A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
    • H04N5/645—Mounting of picture tube on chassis or in housing

Definitions

  • the invention proposes to furnish the mains-connecting part with ring type transformers adapted to be rotated on their axes or with only one such transformer, as will be understood from the following description, reference being had to the accornpanying drawing in which an arrangement as provided by the invention is shown by way of example.
  • the invention thus merely requires the ring transformers to be rotatable and is therefore very easy to practice.
  • the invention is not only adapted for use with television receivers but may be employed whenever a cathode ray tube and a mains-connecting device are so comprised in one assembly that the leakage fields of the transformers and chokes can influence the beam.
  • a television apparatus comprising a cathoderay tube, a source of alternating current for said tube includin a mains-connecting part, two separately rotatable ring type transformers in said mains-connecting part so adjusted by rotating them mutually to balance their stray fields and also to compensate for other such fields.
  • a television apparatus wherein the cathode-ray tube has a bulb neck under which the said transformers are located with their axes extending transversely of this tube.
  • cathode-ray tube has a bulb neck under which the said transformers are located with their axes extending transversely of this tube, these axes being those on which the transformers are rotatable.

Description

July 4, 1939. P. DESERNO El AL TELEVI S ION APPARATUS Filed July 7, 1937 Patented July 4, 1939 TELEVISION APPARATUS Peter Deserno and Maximilian Messner, Berlin,
Germany, assignors to C. Lorenz Alktiengesellschaft, Berlin-Tempelhof, Germany, a com- Application July 7, 1937. Serial No. 152,337 In Germany July 7, 1936 3 Claims.
In the operation of television apparatus connected to a public or mains supply difficulty is often caused by leakage fields or stray fields of the mains-connecting part, as these fields act 5 to influence the beam of electrons of the cathode ray tube or so-called Braun tube used for the image reproduction. The spot of light, produced by the beam impinging upon the fluorescent screen of the Braun tube, is by such influence caused to undergo displacement and deformation so as to impair the image reproduction. A screening for the mains-connecting part would have to be made of iron plates several millimetres in thickness, and thus would considerably add to the expense for such apparatus and would also increase the own weight thereof to an undesirable degree.
In order to overcome these drawbacks the invention proposes to furnish the mains-connecting part with ring type transformers adapted to be rotated on their axes or with only one such transformer, as will be understood from the following description, reference being had to the accornpanying drawing in which an arrangement as provided by the invention is shown by way of example.
In this drawing, two ring type network-transformers I, II are represented. These transformers are disposed below the bulb neck of the Braun manner indicated by the arrows. The axes of the tube K and are rotatable on their axes in the by chokes, for instance.
The adjustment of the transformers can readily be made for this purpose.
The invention thus merely requires the ring transformers to be rotatable and is therefore very easy to practice.
The invention is not only adapted for use with television receivers but may be employed whenever a cathode ray tube and a mains-connecting device are so comprised in one assembly that the leakage fields of the transformers and chokes can influence the beam.
What is claimed is:
1. A television apparatus comprising a cathoderay tube, a source of alternating current for said tube includin a mains-connecting part, two separately rotatable ring type transformers in said mains-connecting part so adjusted by rotating them mutually to balance their stray fields and also to compensate for other such fields.
2. A television apparatus according to claim wherein the cathode-ray tube has a bulb neck under which the said transformers are located with their axes extending transversely of this tube.
3. An apparatus according to claim 1, wherein the cathode-ray tube has a bulb neck under which the said transformers are located with their axes extending transversely of this tube, these axes being those on which the transformers are rotatable.
' MAXIMILIAN MESSNER.
PETER DESERNO.
US152337A 1936-07-07 1937-07-07 Television apparatus Expired - Lifetime US2164906A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2164906X 1936-07-07

Publications (1)

Publication Number Publication Date
US2164906A true US2164906A (en) 1939-07-04

Family

ID=7988110

Family Applications (1)

Application Number Title Priority Date Filing Date
US152337A Expired - Lifetime US2164906A (en) 1936-07-07 1937-07-07 Television apparatus

Country Status (1)

Country Link
US (1) US2164906A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517807A (en) * 1945-05-30 1950-08-08 Rca Corp Neutralization of deflection field between photocathode and mosaic of pickup tube
US2925524A (en) * 1956-03-16 1960-02-16 Gen Electric Methods and structures correcting for beam deflections in a television picture tube
US3399325A (en) * 1964-04-21 1968-08-27 Teodor Danila Arrangement for reducing locally generated radio frequency interference
US3939378A (en) * 1973-08-16 1976-02-17 Tektronix, Inc. Storage cathode ray tube having auxiliary coils to correct non-symmetrical geometry

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517807A (en) * 1945-05-30 1950-08-08 Rca Corp Neutralization of deflection field between photocathode and mosaic of pickup tube
US2925524A (en) * 1956-03-16 1960-02-16 Gen Electric Methods and structures correcting for beam deflections in a television picture tube
US3399325A (en) * 1964-04-21 1968-08-27 Teodor Danila Arrangement for reducing locally generated radio frequency interference
US3939378A (en) * 1973-08-16 1976-02-17 Tektronix, Inc. Storage cathode ray tube having auxiliary coils to correct non-symmetrical geometry

Similar Documents

Publication Publication Date Title
GB453043A (en) Improvements in or relating to cathode ray tube television and like reproducer apparatus
US2164906A (en) Television apparatus
US2111941A (en) Braun tube for producing television images of large size
GB452650A (en) Improvements in and relating to cathode ray tubes
GB469455A (en) Improvements in or relating to cathode ray tubes
US2137353A (en) Television tube
GB467195A (en) Improvements in or relating to television or like receivers employing cathode ray tubes
GB495707A (en) Improvements in or relating to focussing systems for use in electric discharge tubes
GB368721A (en) Television apparatus
US2110669A (en) Electron optical device
GB461235A (en) Improvements in or relating to braun tubes, preferably for television purposes
GB517483A (en) Improvements in or relating to television and like receivers
US2197899A (en) Television tube
GB399160A (en) Television reception arrangement with braun tube
GB470496A (en) Television tube
GB455479A (en) Improvements in or relating to electrical circuits associated with cathode-ray tubes
US2017127A (en) Cathode ray scanning device
GB521638A (en) Improvements in or relating to the deflection of cathode-ray beams
GB488416A (en) Improvements in or relating to electron-optical lens systems for electron discharge tubes
GB525967A (en) Improvements relating to television receivers
GB474442A (en) Improvements in or relating to cathode ray tubes and apparatus embodying the same
GB455084A (en) Improvements in or relating to cathode ray tubes and circuits therefor
GB500809A (en) Improvements in or relating to television receiving apparatus
GB446618A (en) Circuit arrangement for the magnetic deflection of the cathode ray of a braun tube
GB477406A (en) Improvements in or relating to television or like systems and electron discharge apparatus therefor