GB506189A - Elimination of signal weakening in television transmitters - Google Patents

Elimination of signal weakening in television transmitters

Info

Publication number
GB506189A
GB506189A GB35708/37A GB3570837A GB506189A GB 506189 A GB506189 A GB 506189A GB 35708/37 A GB35708/37 A GB 35708/37A GB 3570837 A GB3570837 A GB 3570837A GB 506189 A GB506189 A GB 506189A
Authority
GB
United Kingdom
Prior art keywords
valve
output
amplifier
transmitting
dec
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
GB35708/37A
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
Application filed by Loewe Opta GmbH filed Critical Loewe Opta GmbH
Publication of GB506189A publication Critical patent/GB506189A/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
    • H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards

Landscapes

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

Abstract

506,189. Valve circuits. RADIOAKT.- GES. D. S. LOEWE. Dec. 24, 1937, No. 35708. Convention date, Dec. 24, 1936. [Class 40 (v)] To eliminate distortion in a television transmitter or amplifier due to anode supply varia - tion when the transmission is switched to and from synchronizing level the output is distorted before it is fed to the transmitting valve. As shown, the output of the modulation amplifier 19 is distorted by the amplifier M before it is fed to the transmitting valve 30. Two valves are used in M so that the incoming and outgoing signals are in phase although a single valve only could be used. The compensation is effected by condensers 23, 23<1> and resistances or inductances 22, 22<1> which lift the low tones, the components of the circuit being adjusted until the output, as shown on an oscillograph, is of the required shape. Rectified reaction through 27, 28 maintains the basic value of the control potential at the same level. The Specification as open to inspection under Sect. 91 also shows methods of compensation in which the anode supply is bridged by a buffer valve and in which a tetrode transmitting tube is used, the screen potential being maintained constant. This subject-matter does not appear in the Specification as accepted.
GB35708/37A 1936-12-24 1937-12-24 Elimination of signal weakening in television transmitters Expired GB506189A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE506189X 1936-12-24

Publications (1)

Publication Number Publication Date
GB506189A true GB506189A (en) 1939-05-24

Family

ID=6546511

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35708/37A Expired GB506189A (en) 1936-12-24 1937-12-24 Elimination of signal weakening in television transmitters

Country Status (1)

Country Link
GB (1) GB506189A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930846A (en) * 1954-03-19 1960-03-29 Rca Corp Television transmission

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930846A (en) * 1954-03-19 1960-03-29 Rca Corp Television transmission

Similar Documents

Publication Publication Date Title
GB531711A (en) Automatic amplification and black level control for television receivers
GB394496A (en) Television method
GB444049A (en) Amplitude filter particularly for television
GB537599A (en) Video-frequency signal-translating system
GB466571A (en) Improvements in or relating to television
GB534457A (en) Improvements in and relating to detector coupling circuits
GB506189A (en) Elimination of signal weakening in television transmitters
GB541006A (en) Television synchronizing and control system
US3274334A (en) Hue control circuits for color television receivers
US2890294A (en) Phase-amplitude characteristic correction circuit arrangements
US2199192A (en) Compensation amplifier system
GB390565A (en) System of electrical picture transmission
GB444881A (en) Television method and arrangement
GB477253A (en) Improvements in or relating to television and like transmitters
GB504711A (en) Improvements in signal-receivers for carrier-telephony systems
US2194571A (en) Television receiving rectifier
US2196364A (en) Television receiving connection system
GB541005A (en) Television synchronizing and control system
GB407322A (en) Improvements in or relating to television transmission systems
GB449224A (en) Improvements in or relating to television receivers
GB412126A (en) Improvements in or relating to television and like apparatus
GB464553A (en) Stabilisation of television amplifiers
GB410147A (en) Television transmission method
GB291083A (en) Arrangement for the automatic regulation of the degree of transmission of transmission systems, particularly of high frequency transmission systems
GB426109A (en) Improvements in or relating to thermionic valve circuit arrangements for use in highfrequency signalling systems