GB943471A - Automatic phase control circuits - Google Patents

Automatic phase control circuits

Info

Publication number
GB943471A
GB943471A GB1901259A GB1901259A GB943471A GB 943471 A GB943471 A GB 943471A GB 1901259 A GB1901259 A GB 1901259A GB 1901259 A GB1901259 A GB 1901259A GB 943471 A GB943471 A GB 943471A
Authority
GB
United Kingdom
Prior art keywords
voltage
phase
phase control
emitter
standing
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
GB1901259A
Inventor
Ladislav Lax
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.)
Pye Electronic Products Ltd
Original Assignee
Pye 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 Pye Ltd filed Critical Pye Ltd
Priority to GB1901259A priority Critical patent/GB943471A/en
Publication of GB943471A publication Critical patent/GB943471A/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
    • H04N5/12—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising
    • H04N5/126—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising whereby the synchronisation signal indirectly commands a frequency generator

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Synchronizing For Television (AREA)

Abstract

943,471. Automatic phase control systems; phase detectors. PYE Ltd. May 30, 1960 [June 3, 1959], No. 19012/59. Heading H3A. Synchronizing pulses W2 and a sawtooth wave W1 to be controlled in phase are interchangeably applied to the base and to an impedance in series with the emitter of a normally blocked transistor to derive across a collector circuit capacitor C2 a D.C. voltage proportional to the instantaneous sawtooth voltage at the occurrence of the instants of switching pulses W2, and applied retroactively to stabilize the phase of the generator, e.g. television receiver line oscillator, producing the saw-tooth wave W1. A standing D.C. negative voltage V may be applied to both the emitter and base so that the D.C. output varies about this standing voltage. The collector has no operating voltage applied to it.
GB1901259A 1959-06-03 1959-06-03 Automatic phase control circuits Expired GB943471A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1901259A GB943471A (en) 1959-06-03 1959-06-03 Automatic phase control circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1901259A GB943471A (en) 1959-06-03 1959-06-03 Automatic phase control circuits

Publications (1)

Publication Number Publication Date
GB943471A true GB943471A (en) 1963-12-04

Family

ID=10122286

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1901259A Expired GB943471A (en) 1959-06-03 1959-06-03 Automatic phase control circuits

Country Status (1)

Country Link
GB (1) GB943471A (en)

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