GB644402A - Electronic valve amplifiers or oscillators - Google Patents

Electronic valve amplifiers or oscillators

Info

Publication number
GB644402A
GB644402A GB3185847A GB3185847A GB644402A GB 644402 A GB644402 A GB 644402A GB 3185847 A GB3185847 A GB 3185847A GB 3185847 A GB3185847 A GB 3185847A GB 644402 A GB644402 A GB 644402A
Authority
GB
United Kingdom
Prior art keywords
grid
valve
cathode
current
resistance
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
GB3185847A
Inventor
Walter Schreuer
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.)
Communications Patents Ltd
Original Assignee
Communications Patents Ltd
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 Communications Patents Ltd filed Critical Communications Patents Ltd
Priority to GB3185847A priority Critical patent/GB644402A/en
Publication of GB644402A publication Critical patent/GB644402A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/04—Sources of current

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Amplifiers (AREA)
  • Microwave Amplifiers (AREA)

Abstract

644,402. Valve circuits. COMMUNICATIONS PATENTS, Ltd. Dec. 2, 1947, No. 31858. [Class 40 (vi)] In an oscillator or amplifier operating with grid current, the grid current is maintained constant by using the anode-cathode path of a tetrode or like constant-current device as grid leak. The grid-cathode path of an oscillator V1 comprises a choke 13 and resistance 12 and the anode-cathode path of a tetrode V2. The screen of the valve V2 is connected over a current-limiting resistance 14 to a source of potential which is fixed relative to that of the cathode, and which may comprise a resistance and gas-discharge tube in series between anode and cathode. The grid of the valve V2 is connected to cathode; alternatively the grid potential may be made variable in order to control the current through the valve. A resistance 16 connected in parallel with the valve V2 prevents instability due to secondary emission irregularities.
GB3185847A 1947-12-02 1947-12-02 Electronic valve amplifiers or oscillators Expired GB644402A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3185847A GB644402A (en) 1947-12-02 1947-12-02 Electronic valve amplifiers or oscillators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3185847A GB644402A (en) 1947-12-02 1947-12-02 Electronic valve amplifiers or oscillators

Publications (1)

Publication Number Publication Date
GB644402A true GB644402A (en) 1950-10-11

Family

ID=10329451

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3185847A Expired GB644402A (en) 1947-12-02 1947-12-02 Electronic valve amplifiers or oscillators

Country Status (1)

Country Link
GB (1) GB644402A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1141375B (en) * 1957-05-02 1962-12-20 Philips Nv High frequency tube generator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1141375B (en) * 1957-05-02 1962-12-20 Philips Nv High frequency tube generator

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