US2737625A - Device for supplying stepped d. c. voltages - Google Patents

Device for supplying stepped d. c. voltages Download PDF

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Publication number
US2737625A
US2737625A US271267A US27126752A US2737625A US 2737625 A US2737625 A US 2737625A US 271267 A US271267 A US 271267A US 27126752 A US27126752 A US 27126752A US 2737625 A US2737625 A US 2737625A
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United States
Prior art keywords
terminals
condensers
voltages
supplying
load device
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Expired - Lifetime
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US271267A
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English (en)
Inventor
Felici Noel
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Centre National de la Recherche Scientifique CNRS
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Centre National de la Recherche Scientifique CNRS
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/04—Electron multipliers
    • H01J43/30—Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for

Definitions

  • Such stepped voltages are used in particular for feeding certain electron tubes provided with several electrodes.
  • Voltage supply systems are known constituted by an association of resistors and of discharge tubes of the ionized gas type. The operation of such systems is satisfactory but the drawback occurs of an absorption of energy which in some cases may be considerable as compared with the useful energy. This is the case, for example, with certain photo-electric tubes provided with several electrodes each of which only draws a very low current. Feeding such tubes by means known heretofore would thus lead to an excessively large voltage supply.
  • the present invention removes this difiiculty by the provision of a group of condensers associated in series, acting as storing devices and capable of being discharged and charged again at intervals.
  • a group of condensers associated in series acting as storing devices and capable of being discharged and charged again at intervals.
  • Such a supply is suitable for feeding tubes which are intended to operate satisfactorily within two predetermined voltage values, provided the ratios between the voltages applied to the various electrodes are kept constant. This is a prerequisite for certain types of electron tubes.
  • Fig. 1 is an electrical circuit diagram embodying the invention in one form
  • Fig. 2 is an electrical circuit diagram embodying the invention in a second form.
  • the electronic telescope T shown in Fig. 1 of the appended drawing comprises a photo-cathode C and an anode A, between which three electrodes E1, E2, E: are arranged, for accelerating and focussing the electrons transmitted by the cathode.
  • a voltage generator G an electrostatic machine, for instance, is connected to the points v, z, of a chain of condensers c1, c2, c3, 04 connected in series.
  • the anode is connected to the point v, the electrode E1 to the point w common to c1 and (:2, the electrode E2 to the point x common to c2 and es, the electrode E3 to the point y common to ca and c4 and finally the cathode is connected to the point z.
  • a voltage limiting device l1, l2, l3, I4 is arranged in parallel with each condenser. The resistance of said voltage limiting device becomes reduced from an extremely high value to a relatively low value corresponding to the difference of potential across the terminals of the limiting device at which discharge between these terminals takes place. This is realized with certain electric discharge devices: fixed spark gaps, ionized gas tubes, etc. Some semi-conducting elements may also offer this property.
  • resistors R1, R2, R3, R4 are arranged in series with the respective limiting devices.
  • Such an arrangement which is an important feature of the invention, makes it possible to maintain the voltage across the terminals of each condenser, after each charging period of time, at the required value however great has been the previous discharge.
  • the limiting devices make it possible to calibrate the voltages each time a charge is resumed.
  • V1, V2, V3, V4 designate the respective charging voltages of the condensers c1, 02, ca, 04 corresponding to discharge of the respective limiting devices l1, [2, [3, 14.
  • the values of capacity of the condensers are selected in such a manner that the following equation is satisfied:
  • the output of the generator G may be interrupted, if the capacity of the condensers is great enough to feed, during a certain period of time, the electrodes of the tube.
  • the voltages applied to these electrodes decrease gradually but the ratios between these voltages are substantially maintained during the period of time during which this decrease occurs.
  • the brilliancy of the image in the telescope decreases down to a value considered as acceptable but the focussing is maintained and the sharpness is not aifected.
  • An equipment of this type is very valuable, for instance, in the case of portable apparatus for which the high voltage can only be supplied through a hand operated machine but which requires complete freedom of the hands during the observation period of time.
  • Such apparatus operable by handle H is diagrammatically shown in Fig. 2 in which also, by way of modification, the voltage limiting devices are represented as ionized gas tubes, specifically glow discharge tubes, M1, M2, M3, M4.
  • the charging of the group of condensers will merely be performed previous to the utilization period.

Landscapes

  • Generation Of Surge Voltage And Current (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Elimination Of Static Electricity (AREA)
US271267A 1951-02-13 1952-02-12 Device for supplying stepped d. c. voltages Expired - Lifetime US2737625A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1013752X 1951-02-13

Publications (1)

Publication Number Publication Date
US2737625A true US2737625A (en) 1956-03-06

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ID=9571842

Family Applications (1)

Application Number Title Priority Date Filing Date
US271267A Expired - Lifetime US2737625A (en) 1951-02-13 1952-02-12 Device for supplying stepped d. c. voltages

Country Status (6)

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US (1) US2737625A (en:Method)
CH (1) CH299512A (en:Method)
DE (1) DE1013752B (en:Method)
FR (1) FR1032377A (en:Method)
GB (1) GB729444A (en:Method)
NL (1) NL86424C (en:Method)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3076896A (en) * 1961-05-01 1963-02-05 Lockheed Aireraft Corp Voltage supply and control system
US4568871A (en) * 1984-01-26 1986-02-04 Borg-Warner Balancing system for limiting voltage imbalance across series-connected capacitors
US11863086B2 (en) 2018-02-15 2024-01-02 The Charles Stark Draper Laboratory, Inc. Electrostatic motor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1177746B (de) * 1959-06-03 1964-09-10 Asea Ab Schaltungsanordnung bei einem Hochspannungs-ionenventil

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB502784A (en) * 1937-09-18 1939-03-24 British Thomson Houston Co Ltd Improvements in and relating to waste disposal apparatus
FR875366A (fr) * 1941-09-18 1942-09-18 Asea Ab Dispositif de mise à la terre en cas de surtension
US2413391A (en) * 1942-06-20 1946-12-31 Rca Corp Power supply system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE431881A (fr) * 1937-12-28 1939-01-31 Thomson Houston perfectionnements aux tubes à décharge

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB502784A (en) * 1937-09-18 1939-03-24 British Thomson Houston Co Ltd Improvements in and relating to waste disposal apparatus
FR875366A (fr) * 1941-09-18 1942-09-18 Asea Ab Dispositif de mise à la terre en cas de surtension
US2413391A (en) * 1942-06-20 1946-12-31 Rca Corp Power supply system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3076896A (en) * 1961-05-01 1963-02-05 Lockheed Aireraft Corp Voltage supply and control system
US4568871A (en) * 1984-01-26 1986-02-04 Borg-Warner Balancing system for limiting voltage imbalance across series-connected capacitors
US11863086B2 (en) 2018-02-15 2024-01-02 The Charles Stark Draper Laboratory, Inc. Electrostatic motor

Also Published As

Publication number Publication date
FR1032377A (fr) 1953-07-01
CH299512A (fr) 1954-06-15
DE1013752B (de) 1957-08-14
GB729444A (en) 1955-05-04
NL86424C (en:Method)

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