FR872416A - Method and apparatus for amplifying electron currents at will in either direction - Google Patents

Method and apparatus for amplifying electron currents at will in either direction

Info

Publication number
FR872416A
FR872416A FR872416DA FR872416A FR 872416 A FR872416 A FR 872416A FR 872416D A FR872416D A FR 872416DA FR 872416 A FR872416 A FR 872416A
Authority
FR
France
Prior art keywords
electron currents
amplifying electron
amplifying
currents
electron
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
Other languages
French (fr)
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.)
Robert Bosch Fernsehanlagen GmbH
Original Assignee
Fernseh GmbH
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 Fernseh GmbH filed Critical Fernseh GmbH
Application granted granted Critical
Publication of FR872416A publication Critical patent/FR872416A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/04—Electron multipliers
FR872416D 1939-04-28 1941-05-21 Method and apparatus for amplifying electron currents at will in either direction Expired FR872416A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE214025X 1939-04-28

Publications (1)

Publication Number Publication Date
FR872416A true FR872416A (en) 1942-06-08

Family

ID=5816468

Family Applications (1)

Application Number Title Priority Date Filing Date
FR872416D Expired FR872416A (en) 1939-04-28 1941-05-21 Method and apparatus for amplifying electron currents at will in either direction

Country Status (3)

Country Link
BE (1) BE438658A (en)
CH (1) CH214025A (en)
FR (1) FR872416A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2635206A (en) * 1949-01-06 1953-04-14 Bell Telephone Labor Inc Generation of microwaves
US2681995A (en) * 1949-11-26 1954-06-22 Zenith Radio Corp Electron discharge device and circuits

Also Published As

Publication number Publication date
BE438658A (en)
CH214025A (en) 1941-03-31

Similar Documents

Publication Publication Date Title
FR872416A (en) Method and apparatus for amplifying electron currents at will in either direction
BE762489A (en) METHOD AND APPARATUS FOR THE MANUFACTURING OF STEEL
FR872313A (en) Method and apparatus for the manufacture of matrices or relief impressions of sound recording tapes
FR839577A (en) Method and device for including easily oxidizing metals in metal tubes for dividing them into small pieces
FR839173A (en) Photographic enlargement and reproduction apparatus
FR843456A (en) Method and device for tillage machines, in particular for tillage implements
FR837822A (en) Calculating device for addition and subtraction
FR900139A (en) Method and apparatus for controlling mechanical operations, combined with sound recordings
FR857912A (en) Method and device for determining the concentration of hydrogen ions using surface-separating electrodes
FR868215A (en) Method and apparatus for the fermentation of milk
FR843841A (en) Method and apparatus for preparing epichlorohydrin
FR858989A (en) Method for cultivating potatoes or the like and machine for carrying out the method
FR831124A (en) Apparatus for taking intact samples in strongly cohesive soils
FR50296E (en) Apparatus for drawing lotteries and similar operations
FR835024A (en) Apparatus for recording the action currents of living organisms
FR839172A (en) Photographic enlargement and reproduction apparatus
FR864169A (en) Method for amplifying very low currents
FR861608A (en) Method and apparatus for making underground passages
FR827003A (en) Exploration method and apparatus for television
FR49522E (en) Method and apparatus for recording electrical and mechanical phenomena using an oscillograph
FR831378A (en) Method and apparatus for recording electrical and mechanical phenomena using an oscillograph
FR855183A (en) Evaporation apparatus and method
FR799648A (en) Improvements in the handling and operation of seed drills
FR1359691A (en) Recording apparatus comprising an AC amplifier, for the graphic representation, in particular of physiological phenomena
FR1195804A (en) Method and apparatus for arc cutting