FR834004A - Electronic discharge devices - Google Patents

Electronic discharge devices

Info

Publication number: FR834004A
Authority: FR; France
Prior art keywords: discharge devices; electronic discharge; electronic; devices; discharge
Prior art date: 1937-02-26
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

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.)

Thales SA

Original Assignee

Le Materiel Telephonique Thomson CSF

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.)

1937-02-26

Filing date

1938-02-18

Publication date

1938-11-09

1938-02-18 Application filed by Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF

1938-11-09 Application granted granted Critical

1938-11-09 Publication of FR834004A publication Critical patent/FR834004A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J21/00—Vacuum tubes
- H01J21/02—Tubes with a single discharge path
- H01J21/06—Tubes with a single discharge path having electrostatic control means only
- H01J21/065—Devices for short wave tubes
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J21/00—Vacuum tubes
- H01J21/20—Tubes with more than one discharge path; Multiple tubes, e.g. double diode, triode-hexode
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B9/00—Generation of oscillations using transit-time effects
- H03B9/01—Generation of oscillations using transit-time effects using discharge tubes
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
- H03F1/14—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means
- H03F1/16—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means in discharge-tube amplifiers
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/003—Tubes with plural electrode systems

Landscapes

Engineering & Computer Science (AREA)
Power Engineering (AREA)
Amplifiers (AREA)
Oscillators With Electromechanical Resonators (AREA)
Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Physical Or Chemical Processes And Apparatus (AREA)

FR834004D 1937-02-26 1938-02-18 Electronic discharge devices Expired FR834004A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US127899A US2163247A (en)	1937-02-26	1937-02-26	Electron discharge apparatus

Publications (1)

Publication Number	Publication Date
FR834004A true FR834004A (en)	1938-11-09

Family

ID=22432530

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
FR834005D Expired FR834005A (en)	1937-02-26	1938-02-18	Electronic discharge devices
FR834004D Expired FR834004A (en)	1937-02-26	1938-02-18	Electronic discharge devices

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
FR834005D Expired FR834005A (en)	1937-02-26	1938-02-18	Electronic discharge devices

Country Status (6)

Country	Link
US (1)	US2163247A (en)
BE (1)	BE495242A (en)
DE (1)	DE706668C (en)
FR (2)	FR834005A (en)
GB (1)	GB495242A (en)
NL (1)	NL49225C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2456579A (en) *	1942-10-30	1948-12-14	Rca Corp	Electron discharge device for ultra high frequencies
US2423443A (en) *	1942-12-31	1947-07-08	Bell Telephone Labor Inc	High power electronic discharge device for generating ultra high frequency radiations
US2437027A (en) *	1943-01-12	1948-03-02	John H Homrighous	Time division multiplex communication system
US2533280A (en) *	1943-03-16	1950-12-12	Int Standard Electric Corp	Multiunit vacuum tube
US5007135A (en) *	1990-06-18	1991-04-16	Robert Rigsby	Plant growing receptacle
US5383302A (en) *	1992-10-08	1995-01-24	Hill; Ronald F.	Apparatus and method for growing strongly-rooted trees, and preventing root damage to hardscapes

1937
- 1937-02-26 US US127899A patent/US2163247A/en not_active Expired - Lifetime
1938
- 1938-01-21 GB GB2069/38A patent/GB495242A/en not_active Expired
- 1938-02-18 FR FR834005D patent/FR834005A/en not_active Expired
- 1938-02-18 FR FR834004D patent/FR834004A/en not_active Expired
- 1938-02-19 DE DEI60573D patent/DE706668C/en not_active Expired
- 1938-02-24 NL NL49225D patent/NL49225C/xx active
1950
- 1950-04-19 BE BE495242D patent/BE495242A/xx unknown

Also Published As

Publication number	Publication date
DE706668C (en)	1941-05-31
NL49225C (en)	1940-09-16
BE495242A (en)	1950-08-16
FR834005A (en)	1938-11-09
GB495242A (en)	1938-11-09
US2163247A (en)	1939-06-20

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