GB1188117A - Improvements in or relating to Oscillator Circuit Arrangements - Google Patents

Improvements in or relating to Oscillator Circuit Arrangements

Info

Publication number
GB1188117A
GB1188117A GB43543/66A GB4354366A GB1188117A GB 1188117 A GB1188117 A GB 1188117A GB 43543/66 A GB43543/66 A GB 43543/66A GB 4354366 A GB4354366 A GB 4354366A GB 1188117 A GB1188117 A GB 1188117A
Authority
GB
United Kingdom
Prior art keywords
oscillator
transistor
output voltage
resistor
starting
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
GB43543/66A
Inventor
Alan Dudley Wallis
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.)
Marconi Instruments Ltd
Original Assignee
Marconi Instruments 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 Marconi Instruments Ltd filed Critical Marconi Instruments Ltd
Priority to GB43543/66A priority Critical patent/GB1188117A/en
Publication of GB1188117A publication Critical patent/GB1188117A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H04N3/185—Maintaining dc voltage constant
    • H04N3/1856—Maintaining dc voltage constant using regulation in series
    • 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
    • H02M3/338—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 in a self-oscillating arrangement
    • H02M3/3385—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 in a self-oscillating arrangement with automatic control of output voltage or current
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1203—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier being a single transistor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1231—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1296—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the feedback circuit comprising a transformer

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Dc-Dc Converters (AREA)

Abstract

1,188,117. Oscillators. MARCONI INSTRUMENTS Ltd. 13 July, 1967 [29 Sept., 1966], No. 43543/66. Heading H3T. [Also in Divisions G3 and H2] The rectified output voltage at terminal 02 of an oscillator constituted by a transistor T1 associated with a transformer TR is regulated by a feedback circuit which includes a resistor R and transistors T3, T4, T5 and which controls transistors T6, T7 arranged in the supply circuit to the oscillator, whereby the supply potential is varied in dependence upon output voltage variations so that the said voltage tends to remain at a constant value; additionally, the feedback circuit renders conductive a further transistor T2 should the output voltage fall to a pre-determined value below said constant value, as might occur at starting or on overload, whereby a bias voltage applied to the base of transistor T1 by way of transistor T2 and a resistor R8 is automatically changed to a value at which the oscillator is self-starting. Thus the need permanently to bias the oscillator so that it will start when switched on is obviated. The oscillator may be provided with a plurality of output connections such as 01 and 02, with or without associated rectifiers and may provide E.H.T. voltages for oscilloscope instruments and the like.
GB43543/66A 1966-09-29 1966-09-29 Improvements in or relating to Oscillator Circuit Arrangements Expired GB1188117A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB43543/66A GB1188117A (en) 1966-09-29 1966-09-29 Improvements in or relating to Oscillator Circuit Arrangements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB43543/66A GB1188117A (en) 1966-09-29 1966-09-29 Improvements in or relating to Oscillator Circuit Arrangements

Publications (1)

Publication Number Publication Date
GB1188117A true GB1188117A (en) 1970-04-15

Family

ID=10429238

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43543/66A Expired GB1188117A (en) 1966-09-29 1966-09-29 Improvements in or relating to Oscillator Circuit Arrangements

Country Status (1)

Country Link
GB (1) GB1188117A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938025A (en) * 1973-10-17 1976-02-10 Telefonaktiebolaget L M Ericsson DC to DC converter for producing two individually controlled and stabilized DC-voltages
US3983472A (en) * 1974-03-11 1976-09-28 Litton Business Systems, Inc. Chokeless Schmitt-trigger regulator
GB2358294A (en) * 2000-01-14 2001-07-18 Quantum Fuel Technology Ltd DC-DC converter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938025A (en) * 1973-10-17 1976-02-10 Telefonaktiebolaget L M Ericsson DC to DC converter for producing two individually controlled and stabilized DC-voltages
US3983472A (en) * 1974-03-11 1976-09-28 Litton Business Systems, Inc. Chokeless Schmitt-trigger regulator
GB2358294A (en) * 2000-01-14 2001-07-18 Quantum Fuel Technology Ltd DC-DC converter

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees