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GB456640A - Improvements in or relating to scanning oscillators for television and like systems - Google Patents

Improvements in or relating to scanning oscillators for television and like systems

Info

Publication number
GB456640A
GB456640A GB1410936A GB1410936A GB456640A GB 456640 A GB456640 A GB 456640A GB 1410936 A GB1410936 A GB 1410936A GB 1410936 A GB1410936 A GB 1410936A GB 456640 A GB456640 A GB 456640A
Authority
GB
United Kingdom
Prior art keywords
grid
oscillations
television
coil
potentiometer
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
GB1410936A
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.)
DAVID WILLIAM PUGH
GEORGE RICHARD TINGLEY
Baird Television Ltd
Original Assignee
DAVID WILLIAM PUGH
GEORGE RICHARD TINGLEY
Baird Television 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 DAVID WILLIAM PUGH, GEORGE RICHARD TINGLEY, Baird Television Ltd filed Critical DAVID WILLIAM PUGH
Priority to GB1449735A priority Critical patent/GB456666A/en
Priority to GB1410936A priority patent/GB456640A/en
Priority to FR806561D priority patent/FR806561A/en
Priority to DEF81169D priority patent/DE729481C/en
Publication of GB456640A publication Critical patent/GB456640A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
    • H03K4/26—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor
    • H03K4/28—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as a switching device
    • H03K4/32—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as a switching device combined with means for generating the driving pulses
    • H03K4/34—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as a switching device combined with means for generating the driving pulses using a single tube with positive feedback through a transformer

Landscapes

  • Mechanical Means For Catching Fish (AREA)
  • Details Of Television Scanning (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Magnetic Treatment Devices (AREA)

Abstract

456,640. Valve generating circuits. TINGLEY, G. R., PUGH, D. W., and BAIRD TELEVISION, Ltd., 58, Victoria Street, Westminster. May 17, 1935, No. 14109/36. Divided out of 456,666. [Class 40 (v)] In a generator of saw-tootl oscillations for the control o: scanning in television &c., of the type comprising a valve having its grid and anode cir cuits coupled for the produc tion of oscillations, the coup ling being so tight that the production of oscillations is periodically modified or inhi bited, a variable grid potentia is given by a potentiometer fed by a battery or, as shown, by a rectifier. A large condenser 6 shunts the potentiometer. The grid coil 2 is wound on the anode coil, so as to obtain tight coupling with small capacity of the grid coil to the ferro-magnetic core which has an air gap the length of which fixes the fly back time. Specification 456,138 is referred to.
GB1410936A 1935-05-17 1935-05-17 Improvements in or relating to scanning oscillators for television and like systems Expired GB456640A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB1449735A GB456666A (en) 1935-05-17 1935-05-17 Improvements in or relating to scanning oscillators for television and like systems
GB1410936A GB456640A (en) 1935-05-17 1935-05-17 Improvements in or relating to scanning oscillators for television and like systems
FR806561D FR806561A (en) 1935-05-17 1936-05-16 Improvements to scanning oscillators for television systems and the like
DEF81169D DE729481C (en) 1935-05-17 1936-05-19 Toggle switching of a high vacuum tube with inductively coupled grid and anode circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1410936A GB456640A (en) 1935-05-17 1935-05-17 Improvements in or relating to scanning oscillators for television and like systems

Publications (1)

Publication Number Publication Date
GB456640A true GB456640A (en) 1936-11-12

Family

ID=10035146

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1410936A Expired GB456640A (en) 1935-05-17 1935-05-17 Improvements in or relating to scanning oscillators for television and like systems
GB1449735A Expired GB456666A (en) 1935-05-17 1935-05-17 Improvements in or relating to scanning oscillators for television and like systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB1449735A Expired GB456666A (en) 1935-05-17 1935-05-17 Improvements in or relating to scanning oscillators for television and like systems

Country Status (3)

Country Link
DE (1) DE729481C (en)
FR (1) FR806561A (en)
GB (2) GB456640A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE756518C (en) * 1938-01-20 1953-11-09 Telefunken Gmbh Circuit arrangement for generating saegezahnfoermiger currents

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE895917C (en) * 1937-10-16 1953-11-09 Fernseh Gmbh Self-oscillating toggle circuit for generating saw tooth flows that generate an image grid that deviates from the rectangular shape
US2493044A (en) * 1946-06-22 1950-01-03 Farnsworth Res Corp Deflection wave generator
BE488391A (en) * 1948-04-09

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE756518C (en) * 1938-01-20 1953-11-09 Telefunken Gmbh Circuit arrangement for generating saegezahnfoermiger currents

Also Published As

Publication number Publication date
DE729481C (en) 1942-12-17
GB456666A (en) 1936-11-13
FR806561A (en) 1936-12-19

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