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GB604107A - Thermionic valve circuits for generating modulated pulse trains - Google Patents

Thermionic valve circuits for generating modulated pulse trains

Info

Publication number
GB604107A
GB604107A GB10100/41A GB1010041A GB604107A GB 604107 A GB604107 A GB 604107A GB 10100/41 A GB10100/41 A GB 10100/41A GB 1010041 A GB1010041 A GB 1010041A GB 604107 A GB604107 A GB 604107A
Authority
GB
United Kingdom
Prior art keywords
pulses
potentiometer
amplitude
frequency
valve
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
GB10100/41A
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.)
Dansk Industri Syndikat AS
Original Assignee
Dansk Industri Syndikat 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 Dansk Industri Syndikat AS filed Critical Dansk Industri Syndikat AS
Publication of GB604107A publication Critical patent/GB604107A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • 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
    • H03K3/04—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Electrotherapy Devices (AREA)

Abstract

604,107. Electro therapeutic apparatus. DANSK INDUSTRI SYNDIKAT, COMPAGNIE MADSEN AKTIESELSKABET. Aug. 8, 1941, No. 10100. Convention date June 21,1940. [Class 81(ii)] [Also in Group XL(c)] Apparatus for the treatment of nerves and muscles by means of electric pulses, especially for the artificial innervation of muscles, comprises means for producing a rhythmically pulsating control current. The frequency of the pulses and their amplitude are variable simultaneously about a datum and in addition the mean frequency and the mean level of the pulses are independently variable. In the Figure the charging and discharging of capacitor 16 controls the current through a valve 1 and the voltage developed across resistors 8, 11 to control the amplitude and frequency of pulses. The potentiometer 30 enables the amplitude to be reduced to zero. The charging and discharging of capacitor 44 produces a sawtooth waveform of frequency determined by potentiometers 41, 46, and varying in amplitude with voltage across potentiometer 11. Sharp pulses are produced from the sawtooth wave by network 50, 68, 69 the spacing being determined by the setting of potentiometer 11 and are amplified by valve 51 the amount of amplification being varied by the potentiometer 8 above a minimum level determined by potentiometers 60, 68. A network may be inserted in the grid circuit of valve 51 to vary the pulse shape.
GB10100/41A 1940-06-21 1941-08-08 Thermionic valve circuits for generating modulated pulse trains Expired GB604107A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK604107X 1940-06-21

Publications (1)

Publication Number Publication Date
GB604107A true GB604107A (en) 1948-06-29

Family

ID=8151582

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10100/41A Expired GB604107A (en) 1940-06-21 1941-08-08 Thermionic valve circuits for generating modulated pulse trains

Country Status (1)

Country Link
GB (1) GB604107A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2156682A (en) * 1984-03-13 1985-10-16 Bio Medical Res Ltd Electrical stimulation of muscle
US5723001A (en) * 1994-06-09 1998-03-03 Electropharmacology, Inc. Apparatus and method for therapeutically treating human body tissue with electromagnetic radiation
US9656096B2 (en) 2003-12-05 2017-05-23 Rio Grande Neurosciences, Inc. Method and apparatus for electromagnetic enhancement of biochemical signaling pathways for therapeutics and prophylaxis in plants, animals and humans
US10226640B2 (en) 2003-12-05 2019-03-12 Endonovo Therapeutics, Inc. Devices and method for treatment of degenerative joint diseases with electromagnetic fields
US10350428B2 (en) 2014-11-04 2019-07-16 Endonovo Therapetics, Inc. Method and apparatus for electromagnetic treatment of living systems

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2156682A (en) * 1984-03-13 1985-10-16 Bio Medical Res Ltd Electrical stimulation of muscle
US5723001A (en) * 1994-06-09 1998-03-03 Electropharmacology, Inc. Apparatus and method for therapeutically treating human body tissue with electromagnetic radiation
US9656096B2 (en) 2003-12-05 2017-05-23 Rio Grande Neurosciences, Inc. Method and apparatus for electromagnetic enhancement of biochemical signaling pathways for therapeutics and prophylaxis in plants, animals and humans
US10207122B2 (en) 2003-12-05 2019-02-19 Endonovo Therapeutics, Inc. Method and apparatus for electromagnetic enhancement of biochemical signaling pathways for therapeutics and prophylaxis in plants, animals and humans
US10226640B2 (en) 2003-12-05 2019-03-12 Endonovo Therapeutics, Inc. Devices and method for treatment of degenerative joint diseases with electromagnetic fields
US10350428B2 (en) 2014-11-04 2019-07-16 Endonovo Therapetics, Inc. Method and apparatus for electromagnetic treatment of living systems

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