GB784444A - Improvements in or relating to obtaining a low frequency alternating current from a direct current supply - Google Patents

Improvements in or relating to obtaining a low frequency alternating current from a direct current supply

Info

Publication number
GB784444A
GB784444A GB18191/55A GB1819155A GB784444A GB 784444 A GB784444 A GB 784444A GB 18191/55 A GB18191/55 A GB 18191/55A GB 1819155 A GB1819155 A GB 1819155A GB 784444 A GB784444 A GB 784444A
Authority
GB
United Kingdom
Prior art keywords
frequency alternating
relating
obtaining
low frequency
direct current
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
GB18191/55A
Inventor
Ronald George John Martin
Howard Raymond Pate
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.)
Plessey Co Ltd
Original Assignee
Plessey Co 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB18191/55A priority Critical patent/GB784444A/en
Publication of GB784444A publication Critical patent/GB784444A/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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/538—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a push-pull configuration
    • H02M7/5381—Parallel type
    • 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
    • H03B5/1206—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 using multiple transistors for amplification
    • H03B5/1218—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 using multiple transistors for amplification the generator being of the balanced type
    • 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)
  • Amplifiers (AREA)

Abstract

784,444. Substation equipment. PLESSEY CO., Ltd. June 25, 1956 [June 23, 1955], No. 18191/55. Class 40 (4). [Also in Group XL (c)] A substation bell is rung by 17 cycle current derived from a transistor oscillator TS1, Fig. 2, whose output feeds a push-pull class B transistor amplifier TS2, TS3 whose output is taken off transformer TR2 to ring the bell. The switch SW may be replaced by a further transistor TS4, Fig. 3, which is caused to become conducting by the application of high frequency alternating potential to its base. The circuit is suitable for use in mines.
GB18191/55A 1955-06-23 1955-06-23 Improvements in or relating to obtaining a low frequency alternating current from a direct current supply Expired GB784444A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB18191/55A GB784444A (en) 1955-06-23 1955-06-23 Improvements in or relating to obtaining a low frequency alternating current from a direct current supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB18191/55A GB784444A (en) 1955-06-23 1955-06-23 Improvements in or relating to obtaining a low frequency alternating current from a direct current supply

Publications (1)

Publication Number Publication Date
GB784444A true GB784444A (en) 1957-10-09

Family

ID=10108218

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18191/55A Expired GB784444A (en) 1955-06-23 1955-06-23 Improvements in or relating to obtaining a low frequency alternating current from a direct current supply

Country Status (1)

Country Link
GB (1) GB784444A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2953737A (en) * 1958-01-14 1960-09-20 Eugene H Beach Transistor power supply
US2999972A (en) * 1958-03-13 1961-09-12 Dresser Ind Stabilized power supply
US3196337A (en) * 1959-10-19 1965-07-20 Kinetics Corp Electrical inverter system
DE1244941B (en) * 1960-01-14 1967-07-20 Licentia Gmbh Externally controlled push-pull changeover belt

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2953737A (en) * 1958-01-14 1960-09-20 Eugene H Beach Transistor power supply
US2999972A (en) * 1958-03-13 1961-09-12 Dresser Ind Stabilized power supply
US3196337A (en) * 1959-10-19 1965-07-20 Kinetics Corp Electrical inverter system
DE1244941B (en) * 1960-01-14 1967-07-20 Licentia Gmbh Externally controlled push-pull changeover belt

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