GB1259576A - - Google Patents

Info

Publication number
GB1259576A
GB1259576A GB1259576DA GB1259576A GB 1259576 A GB1259576 A GB 1259576A GB 1259576D A GB1259576D A GB 1259576DA GB 1259576 A GB1259576 A GB 1259576A
Authority
GB
United Kingdom
Prior art keywords
fed
piezo
inductor
transformer
circuit
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
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 filed Critical
Publication of GB1259576A publication Critical patent/GB1259576A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
    • H04N3/19—Arrangements or assemblies in supply circuits for the purpose of withstanding high voltages
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/40—Piezoelectric or electrostrictive devices with electrical input and electrical output, e.g. functioning as transformers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Dc-Dc Converters (AREA)
  • Details Of Television Scanning (AREA)

Abstract

1,259,576. Piezo-electric transformers. DENKI ONKYO CO. Ltd. 6 May, 1970 [8 May, 1969], No. 21750/70, Heading H3U. [Also in Division H2F] A high-voltage generator for use with a television or cathode-ray tube, employs a piezoelectric transformer 40. A horizontal deflection circuit 10 feeds an A.C. signal to a filter circuit 30. The input terminals 11 and 12 receive a horizontal synchronizing signal. The filter circuit 30 comprises a capacitor 31 and an inductor 32, which acts as a bandpass filter, resonant at the resonant frequency of the piezoelectric crystal 40. This filter prevents D.C. being fed directly on to the piezo-electric crystal, thus avoiding distortion. It also prevents frequency drift when no horizontal synchronizing signal is fed into the circuit, thus preventing excessive current being drawn through transistor 14. The output from the piezo-electric transformer is fed through a voltage rectifying and doubling circuit 50. In an alternative embodiment the filter unit 30 may be fed from a tapping point on transformer 19 and the inductor 32 may be variable. Alternatively the piezo-electric crystal may be fed from a tapping point on the inductor 32. In yet another embodiment the inductor 32 is connected to the transformer 19 on one side and to a capacitor 31 on the other side and the piezo-electric crystal is fed from a centre tap on the capacitor.
GB1259576D 1969-05-08 1970-05-05 Expired GB1259576A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4211469 1969-05-08

Publications (1)

Publication Number Publication Date
GB1259576A true GB1259576A (en) 1972-01-05

Family

ID=12626912

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1259576D Expired GB1259576A (en) 1969-05-08 1970-05-05

Country Status (3)

Country Link
FR (1) FR2047426A5 (en)
GB (1) GB1259576A (en)
NL (1) NL7006691A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0094712A1 (en) * 1982-05-13 1983-11-23 Koninklijke Philips Electronics N.V. Control voltage generating circuit for a piezoelectric element of a positioning device
WO2009131429A1 (en) * 2008-04-22 2009-10-29 Innovia, Sia Modular transformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0094712A1 (en) * 1982-05-13 1983-11-23 Koninklijke Philips Electronics N.V. Control voltage generating circuit for a piezoelectric element of a positioning device
WO2009131429A1 (en) * 2008-04-22 2009-10-29 Innovia, Sia Modular transformer

Also Published As

Publication number Publication date
DE2022674B2 (en) 1975-08-07
DE2022674A1 (en) 1970-11-12
NL7006691A (en) 1970-11-10
FR2047426A5 (en) 1971-03-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee