GB1114023A - An oscillator circuit - Google Patents

An oscillator circuit

Info

Publication number
GB1114023A
GB1114023A GB29195/66A GB2919566A GB1114023A GB 1114023 A GB1114023 A GB 1114023A GB 29195/66 A GB29195/66 A GB 29195/66A GB 2919566 A GB2919566 A GB 2919566A GB 1114023 A GB1114023 A GB 1114023A
Authority
GB
United Kingdom
Prior art keywords
inductance
capacitor
circuit including
erasing
forms
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
GB29195/66A
Inventor
Pavel Michalek
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.)
Tesla AS
Original Assignee
Tesla AS
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 Tesla AS filed Critical Tesla AS
Publication of GB1114023A publication Critical patent/GB1114023A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/024—Erasing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/027—Analogue recording
    • G11B5/03—Biasing
    • 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
    • H03B5/1237—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 comprising means for varying the frequency of the generator
    • H03B5/1262—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 comprising means for varying the frequency of the generator the means comprising switched elements
    • H03B5/1268—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 comprising means for varying the frequency of the generator the means comprising switched elements switched inductors
    • 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)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Digital Magnetic Recording (AREA)

Abstract

1,114,023. Transistor oscillators. TESLA, NARODNI PODNIK. 29 June, 1966 [1 July, 1965], No. 29195/66. Heading H3T. [Also in Division G5] In an oscillator, having a first series circuit including an inductance 2 and a capacitor 3 connected to the base of a transistor 1, a second series circuit including an inductance 13 and a capacitor 11 connected to the junction of the inductance 2 and the capacitor 3, and a positive feedback circuit including series-connected capacitors 4, 5, the value of the capacitor C11 is given by the following:- where k is a constant 1 to 1À5, # is the frequency, Ipmax is the current through the inductance 13 and U m and Uk are the voltages on the windings of the inductances 2 and 13, respectively. As shown, the inductance 13 forms the magnetic head and the inductance 2 forms the erasing head of a tape recorder. Superimposition recording may be provided by switching switch 17 to position B so including an auxiliary coil 14 in place of the erasing coil 2. An additional switch (172) and capacitor resistor arrangement (16, 18 and 19), (Fig. 3, not shown), may be included when superimposing on the original recording so that the original recording can be partially reduced. The magnetizing currents through the magnetic head 13 and erasing head 2 may be set by variable resistors 12 and 19.
GB29195/66A 1965-07-01 1966-06-29 An oscillator circuit Expired GB1114023A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS424765 1965-07-01

Publications (1)

Publication Number Publication Date
GB1114023A true GB1114023A (en) 1968-05-15

Family

ID=5384761

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29195/66A Expired GB1114023A (en) 1965-07-01 1966-06-29 An oscillator circuit

Country Status (4)

Country Link
DE (1) DE1516896A1 (en)
ES (1) ES328540A1 (en)
GB (1) GB1114023A (en)
NL (1) NL6609228A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10998730B1 (en) 2019-04-26 2021-05-04 NeoVolta, Inc. Adaptive solar power battery storage system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10998730B1 (en) 2019-04-26 2021-05-04 NeoVolta, Inc. Adaptive solar power battery storage system
US11605952B1 (en) 2019-04-26 2023-03-14 NeoVolta, Inc. Adaptive solar power battery storage system

Also Published As

Publication number Publication date
NL6609228A (en) 1967-01-02
ES328540A1 (en) 1967-08-01
DE1516896A1 (en) 1969-07-24

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