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GB1099803A - Improvements in or relating to voltage-controlled variable electric resistance circuits - Google Patents

Improvements in or relating to voltage-controlled variable electric resistance circuits

Info

Publication number
GB1099803A
GB1099803A GB822964A GB822964A GB1099803A GB 1099803 A GB1099803 A GB 1099803A GB 822964 A GB822964 A GB 822964A GB 822964 A GB822964 A GB 822964A GB 1099803 A GB1099803 A GB 1099803A
Authority
GB
United Kingdom
Prior art keywords
voltage
electric resistance
end electrodes
variable electric
relating
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
GB822964A
Inventor
Ian Carrodous Hutcheon
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.)
Elster Metering Holdings Ltd
Original Assignee
George Kent 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 George Kent Ltd filed Critical George Kent Ltd
Priority to GB822964A priority Critical patent/GB1099803A/en
Publication of GB1099803A publication Critical patent/GB1099803A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/007—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using field-effect transistors [FET]
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/04—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only
    • H03F3/16—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only with field-effect devices
    • H03F3/165—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only with field-effect devices with junction-FET's
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/38—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers
    • H03F3/387—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers with semiconductor devices only
    • H03F3/393—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers with semiconductor devices only with field-effect devices
    • 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
    • H03K3/353—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of field-effect transistors with internal or external positive feedback

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Electrotherapy Devices (AREA)

Abstract

1,099,803. Field effect transistor variable resistance device. GEORGE KENT Ltd. Feb. 24, 1965 [Feb. 27, 1964], No. 8229/64. Heading H3T. A field effect transistor arranged as a variable electric resistance whose resistance value is controlled by a voltage Vc applied between its gate electrode and one of its end electrodes has a suitable proportion of the voltage applied across the end electrodes of the transistor superimposed on the voltage Vc to render the resistance of the transistor independent of the voltage applied across its end electrodes. The proportion applied to the gate may be determined by a potential divider formed by resistors (Fig. 1) or capacitors (Fig. 5, not shown) or may be produced by a transformer (Fig. 6, not shown). For applying an alternating signal a capacitor may be placed between Ra and A or between x and g. A buffer amplifier M comprising an emitter follower may be inserted between A and Ra.
GB822964A 1964-02-27 1964-02-27 Improvements in or relating to voltage-controlled variable electric resistance circuits Expired GB1099803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB822964A GB1099803A (en) 1964-02-27 1964-02-27 Improvements in or relating to voltage-controlled variable electric resistance circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB822964A GB1099803A (en) 1964-02-27 1964-02-27 Improvements in or relating to voltage-controlled variable electric resistance circuits

Publications (1)

Publication Number Publication Date
GB1099803A true GB1099803A (en) 1968-01-17

Family

ID=9848439

Family Applications (1)

Application Number Title Priority Date Filing Date
GB822964A Expired GB1099803A (en) 1964-02-27 1964-02-27 Improvements in or relating to voltage-controlled variable electric resistance circuits

Country Status (1)

Country Link
GB (1) GB1099803A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451130A1 (en) * 1979-03-08 1980-10-03 Hughes Aircraft Co DIPOLE TO SIMULATE RESISTANCE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451130A1 (en) * 1979-03-08 1980-10-03 Hughes Aircraft Co DIPOLE TO SIMULATE RESISTANCE

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