GB146353A - Improvements in and relating to electric amplifiers - Google Patents

Improvements in and relating to electric amplifiers

Info

Publication number
GB146353A
GB146353A GB18313/20A GB1831320A GB146353A GB 146353 A GB146353 A GB 146353A GB 18313/20 A GB18313/20 A GB 18313/20A GB 1831320 A GB1831320 A GB 1831320A GB 146353 A GB146353 A GB 146353A
Authority
GB
United Kingdom
Prior art keywords
earth
capacity
battery
reaction
connexions
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
GB18313/20A
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Publication of GB146353A publication Critical patent/GB146353A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0064—Earth or grounding circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

146,353. Siemens & Halske Akt.-Ges. July 7, 1916, [Convention date]. Thermionic relays and repeaters.-In a cascade of thermionic amplifiers, suitable points are earthed in order to prevent the whistling due to electrostatic reaction between the input and output circuits of the system, s denotes the secondary of an input transformer, p the primary of an output transformer, B1 a filament battery, and B2 a high-tension plate battery. The reaction which causes maintained oscillations and consequent whistling is regarded as due to the capacity with respect to earth of coils such as sand p, this capacity being represented diagrammatically by C1, C2, C3, and C4. The negative plate of the battery B2 is earthed at E in order to short-circuit the oscillations leaking back from the coil p to the coil s. Connexions k1, k2, are provided for the purpose of preventing reaction between the remaining coils P and S of the transformers. If the earth-capacity, represented by c, c, of these connexions is great enough, the earth-connexion e is dispensed with.
GB18313/20A 1916-07-07 1920-07-02 Improvements in and relating to electric amplifiers Expired GB146353A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE146353X 1916-07-07

Publications (1)

Publication Number Publication Date
GB146353A true GB146353A (en) 1921-10-03

Family

ID=5671314

Family Applications (2)

Application Number Title Priority Date Filing Date
GB18313/20A Expired GB146353A (en) 1916-07-07 1920-07-02 Improvements in and relating to electric amplifiers
GB18153/20A Expired GB145777A (en) 1916-07-07 1920-07-02 Improvements in and relating to electric amplifying devices such as thermionic valves

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB18153/20A Expired GB145777A (en) 1916-07-07 1920-07-02 Improvements in and relating to electric amplifying devices such as thermionic valves

Country Status (5)

Country Link
AT (1) AT87005B (en)
DE (3) DE300621C (en)
FR (1) FR517411A (en)
GB (2) GB146353A (en)
NL (1) NL12208C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972012C (en) * 1937-04-13 1959-05-06 Siemens Ag Transmission system with shielded high-frequency transmission equipment
DE767483C (en) * 1937-04-29 1952-08-28 Siemens & Halske A G High frequency amplification system
US2438115A (en) * 1938-05-13 1948-03-23 Dodds John Mathieson Screening means for vacuum electric tube devices

Also Published As

Publication number Publication date
DE350581C (en) 1922-03-22
NL12208C (en) 1924-12-15
FR517411A (en) 1921-05-06
DE300621C (en) 1921-07-19
GB145777A (en) 1921-04-21
AT87005B (en) 1922-01-25
DE304307C (en) 1921-08-10

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