GB692667A - A device for generating electrical impulses alternately in two electrical circuits by the use of electronic valves - Google Patents

A device for generating electrical impulses alternately in two electrical circuits by the use of electronic valves

Info

Publication number
GB692667A
GB692667A GB10478/51A GB1047851A GB692667A GB 692667 A GB692667 A GB 692667A GB 10478/51 A GB10478/51 A GB 10478/51A GB 1047851 A GB1047851 A GB 1047851A GB 692667 A GB692667 A GB 692667A
Authority
GB
United Kingdom
Prior art keywords
valves
alternately
conductive
electronic valves
adjusted
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
GB10478/51A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB692667A publication Critical patent/GB692667A/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
    • A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/3601—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation of respiratory organs
    • 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
    • A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/36014—External stimulators, e.g. with patch electrodes
    • A61N1/3603—Control systems
    • A61N1/36034—Control systems specified by the stimulation parameters
    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biophysics (AREA)
  • Physiology (AREA)
  • Pulmonology (AREA)
  • Generation Of Surge Voltage And Current (AREA)
  • Electrotherapy Devices (AREA)

Abstract

692,667. Thermionic distributers. SCHUHFRIED, F. May 4, 1951 [May 11, 1950], No. 10478/51. Class 40 (iii). [Also in Groups VI and XL (c)] The Figure shows a pulse generator in which valves B<SP>1</SP>, B<SP>2</SP> are rendered alternately conductive or non-conductive, by a controlling multivibrator comprising valves B<SP>3</SP>, B<SP>4</SP> so that pulses from the low-frequency generator G appear alternately at the outputs P<SP>1</SP> and P<SP>2</SP>. The switching voltage from the multivibrator is applied to the grid circuits of valves B<SP>1</SP>, B<SP>2</SP> via shaping networks R<SP>5</SP>, C<SP>3</SP> and R', C<SP>4</SP> and the amplitudes of the output pulses may be adjusted by potentiometers R<SP>11</SP> and R<SP>12</SP> and the relative pulse durations and repetition frequency may be adjusted by variation of the circuit constants. In a modification, Fig. 2 (not shown), the switching operation is performed by two interconnected switches which alternately apply a negative bias to render the output valves alternately conductive and non-conductive.
GB10478/51A 1950-05-11 1951-05-04 A device for generating electrical impulses alternately in two electrical circuits by the use of electronic valves Expired GB692667A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT692667X 1950-05-11

Publications (1)

Publication Number Publication Date
GB692667A true GB692667A (en) 1953-06-10

Family

ID=3679192

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10478/51A Expired GB692667A (en) 1950-05-11 1951-05-04 A device for generating electrical impulses alternately in two electrical circuits by the use of electronic valves

Country Status (2)

Country Link
DE (1) DE920935C (en)
GB (1) GB692667A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129308A (en) * 1982-11-09 1984-05-16 Frederick Charles Bleach Medical electrical treatment

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2155939B1 (en) * 1971-10-15 1977-10-28 Gillot Bernard
FR2493154A1 (en) * 1980-11-05 1982-05-07 Berthelin Francis Electrical respiratory stimulator - has two pairs of electrodes, placed at level of muscles of patient, supplied with AC of slightly varying frequencies

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT159446B (en) * 1935-12-13 1940-08-26 Ver Telephon Czeija Nissl & Co Device for treating bodies with high-frequency electrical energy.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129308A (en) * 1982-11-09 1984-05-16 Frederick Charles Bleach Medical electrical treatment

Also Published As

Publication number Publication date
DE920935C (en) 1954-12-02

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