GB898393A - Improvements in or relating to circuit arrangements for producing a sawtooth voltage - Google Patents

Improvements in or relating to circuit arrangements for producing a sawtooth voltage

Info

Publication number
GB898393A
GB898393A GB2749859A GB2749859A GB898393A GB 898393 A GB898393 A GB 898393A GB 2749859 A GB2749859 A GB 2749859A GB 2749859 A GB2749859 A GB 2749859A GB 898393 A GB898393 A GB 898393A
Authority
GB
United Kingdom
Prior art keywords
anode
frequency
suppressor
screen
sawtooth
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
GB2749859A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB898393A publication Critical patent/GB898393A/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
    • H03K4/12—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 voltage is produced across a capacitor
    • H03K4/20—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 voltage is produced across a capacitor using a tube with negative feedback by capacitor, e.g. Miller integrator
    • H03K4/22—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 voltage is produced across a capacitor using a tube with negative feedback by capacitor, e.g. Miller integrator combined with transitron, e.g. phantastron, sanatron

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Details Of Television Scanning (AREA)
  • Synchronizing For Television (AREA)
  • Generation Of Surge Voltage And Current (AREA)

Abstract

898,393. Valve sawtooth circuits; automatic phase control systems. PHILIPS ELECTRICAL INDUSTRIES Ltd. Aug. 11, 1959 [Aug. 14, 1958], No. 27498/59. Classes 40(5) and 40(6). In a Miller-transitron sawtooth generator having capacitive coupling between screen and suppressor, the frequency is controlled by variation of a negative voltage 16 applied to the suppressor. The circuit may be synchronized by negative pulses 15 5 applied to the suppressor, screen or anode. The amplitude of the sawtooth output at the anode is independent of frequency. Reference is also made to a circuit in which capacitor 4 is connected between the fifth and first grids of a heptode, synchronizing pulses being applied to the fourth grid, and the anode being connected to a phase discriminator to which the synchronizing pulses are also applied. The direct voltage produced by this discriminator is then fed to the fourth grid as frequency control. The invontion may be applied to a generation of frame sweep for a television receiver. Reference is also made to known circuits in which the frequency is controlled by variation of anode or screen voltages.
GB2749859A 1958-08-14 1959-08-11 Improvements in or relating to circuit arrangements for producing a sawtooth voltage Expired GB898393A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL230520 1958-08-14

Publications (1)

Publication Number Publication Date
GB898393A true GB898393A (en) 1962-06-06

Family

ID=19751308

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2749859A Expired GB898393A (en) 1958-08-14 1959-08-11 Improvements in or relating to circuit arrangements for producing a sawtooth voltage

Country Status (5)

Country Link
DE (1) DE1091607B (en)
ES (1) ES251378A1 (en)
FR (1) FR1232295A (en)
GB (1) GB898393A (en)
NL (1) NL230520A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB485120A (en) * 1936-11-16 1938-05-16 Standard Telephones Cables Ltd Improvements in or relating to relaxation oscillation generators

Also Published As

Publication number Publication date
DE1091607B (en) 1960-10-27
FR1232295A (en) 1960-10-06
NL230520A (en)
ES251378A1 (en) 1959-12-16

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