GB1032085A - Variable frequency generator - Google Patents

Variable frequency generator

Info

Publication number
GB1032085A
GB1032085A GB342165A GB342165A GB1032085A GB 1032085 A GB1032085 A GB 1032085A GB 342165 A GB342165 A GB 342165A GB 342165 A GB342165 A GB 342165A GB 1032085 A GB1032085 A GB 1032085A
Authority
GB
United Kingdom
Prior art keywords
frequency
variable frequency
shunted
frequency generator
coupling capacitors
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
GB342165A
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.)
United States Steel Corp
Original Assignee
United States Steel Corp
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 United States Steel Corp filed Critical United States Steel Corp
Publication of GB1032085A publication Critical patent/GB1032085A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03B5/20—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator
    • H03B5/24—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator active element in amplifier being semiconductor device
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
    • H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/282—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator astable
    • H03K3/2823—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator astable using two active transistor of the same conductivity type

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Ac-Ac Conversion (AREA)
  • Toys (AREA)

Abstract

1,032,085. Transistor oscillator circuits. UNITED STATES STEEL CORPORATION. Jan. 26, 1965 [Feb. 3, 1964], No. 3421/65. Heading H3T. A variable frequency transistor multivibrator has its cross-coupling capacitors shunted by ganged resistors so that the oscillation frequency may be varied and has means for switching in alternative pairs of couplings to change the range of frequency adjustment. As shown, the coupling capacitors are each shunted by two variable resistors, one for normal changes of frequency and one for correcting errors due to circuit changes.
GB342165A 1964-02-03 1965-01-26 Variable frequency generator Expired GB1032085A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US34193864A 1964-02-03 1964-02-03

Publications (1)

Publication Number Publication Date
GB1032085A true GB1032085A (en) 1966-06-08

Family

ID=23339644

Family Applications (1)

Application Number Title Priority Date Filing Date
GB342165A Expired GB1032085A (en) 1964-02-03 1965-01-26 Variable frequency generator

Country Status (4)

Country Link
DE (1) DE1246024B (en)
ES (1) ES308853A1 (en)
FR (1) FR1424097A (en)
GB (1) GB1032085A (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE449377A (en) * 1942-02-27
DE1084756B (en) * 1959-07-21 1960-07-07 Phil Habil Oskar Vierling Dr Transistor multivibrator with switchable half-period ratios

Also Published As

Publication number Publication date
ES308853A1 (en) 1965-05-16
FR1424097A (en) 1966-01-07
DE1246024B (en) 1967-08-03

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