GB474683A - Improvements in or relating to scanning oscillation generators - Google Patents

Improvements in or relating to scanning oscillation generators

Info

Publication number
GB474683A
GB474683A GB1263136A GB1263136A GB474683A GB 474683 A GB474683 A GB 474683A GB 1263136 A GB1263136 A GB 1263136A GB 1263136 A GB1263136 A GB 1263136A GB 474683 A GB474683 A GB 474683A
Authority
GB
United Kingdom
Prior art keywords
coil
current
condenser
valve
rectifier
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
GB1263136A
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.)
Baird Television Ltd
Original Assignee
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 Baird Television Ltd filed Critical Baird Television Ltd
Priority to GB1263136A priority Critical patent/GB474683A/en
Priority to DEF4256D priority patent/DE1045009B/en
Publication of GB474683A publication Critical patent/GB474683A/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
    • 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
    • H03K4/16—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 single tube with positive feedback through transformer, e.g. blocking oscillator

Abstract

474,683. Valve generating circuits. BAIRD TELEVISION, Ltd., and WILLANS, P. W. May 4, 1936, No. 12631. [Class 40 (v)] Voltage pulses generated by changing the current through a coil are caused to give a rapid charge to a condenser or to set up current in a second coil, the condenser charge or the coil current being slowly reduced to complete a saw - tooth cycle. As shown in Fig. 1, the voltage pulses are generated on the anode of a strongly backcoupled valve 1 arranged as described in Specification 463,972, and are fed through a rectifier 5 to charge the condenser 4. The condenser is slowly discharged through a diode valve 7, or a pentode valve, or a resistance. In Fig. 2, the positive voltage pulses on the anode are fed through a rectifier 8 and set up current through a coil 9 the other end of which is connected to a point of higher positive voltage than the normal anode voltage. Current builds up in the coil during the voltage impulse, and falls gradually thereafter as the shunt rectifier 10 becomes conductive. The coil 9 may be the scanning-coil of a cathode-ray tube, or may be coupled thereto.
GB1263136A 1936-05-04 1936-05-04 Improvements in or relating to scanning oscillation generators Expired GB474683A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1263136A GB474683A (en) 1936-05-04 1936-05-04 Improvements in or relating to scanning oscillation generators
DEF4256D DE1045009B (en) 1936-05-04 1937-05-04 Arrangement for generating saw tooth-shaped vibrations, in particular tilting device for deflecting cathode rays

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1263136A GB474683A (en) 1936-05-04 1936-05-04 Improvements in or relating to scanning oscillation generators

Publications (1)

Publication Number Publication Date
GB474683A true GB474683A (en) 1937-11-04

Family

ID=10008246

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1263136A Expired GB474683A (en) 1936-05-04 1936-05-04 Improvements in or relating to scanning oscillation generators

Country Status (2)

Country Link
DE (1) DE1045009B (en)
GB (1) GB474683A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2548907A (en) * 1944-04-19 1951-04-17 La Verne R Philpott Sweep system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2548907A (en) * 1944-04-19 1951-04-17 La Verne R Philpott Sweep system

Also Published As

Publication number Publication date
DE1045009B (en) 1958-11-27

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