GB618252A - Improvements in electron discharge tube amplifying or generating circuits - Google Patents

Improvements in electron discharge tube amplifying or generating circuits

Info

Publication number
GB618252A
GB618252A GB11769/46A GB1176946A GB618252A GB 618252 A GB618252 A GB 618252A GB 11769/46 A GB11769/46 A GB 11769/46A GB 1176946 A GB1176946 A GB 1176946A GB 618252 A GB618252 A GB 618252A
Authority
GB
United Kingdom
Prior art keywords
valve
anode
impedance
generating circuits
april
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
GB11769/46A
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.)
Marconis Wireless Telegraph Co Ltd
Original Assignee
Marconis Wireless Telegraph Co 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 Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB618252A publication Critical patent/GB618252A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/02—Details
    • H03B5/04—Modifications of generator to compensate for variations in physical values, e.g. power supply, load, temperature
    • 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
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/20—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator
    • H03B5/22—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator active element in amplifier being vacuum tube
    • 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
    • H03B7/00—Generation of oscillations using active element having a negative resistance between two of its electrodes
    • H03B7/02—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising lumped inductance and capacitance
    • H03B7/04—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising lumped inductance and capacitance active element being vacuum tube
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/02—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

618,252. Valve amplifying and generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. April 17, 1946, No. 11769. Convention date, April 17, 1945. [Class 40 (vi)] A thermionic valve 1, Fig. 1, and its anode impedance R3 are shunted by an auxiliary valve 2 and its cathode impedance R2, the grid of valve 2 being connected to the anode of valve 1, and the cathode impedances R1, R2 are so related that an increase of the anode potential applied to the valve 1 does not produce an increase of current in that valve. The ratio of resistances R1, R2 may equal the amplification factor of the valve 1, to form a constant current device, or may be adjusted to give valve 1 a negative resistance characteristic. The circuit may be used as an oscillator (Fig. 2, not shown) by replacing the anode impedance of the valve 1 by a tuned circuit and biassing the grid of the valve 1 from potentiometer shunting the anode supply. In another embodiment, Fig. 7, a phase-shift network comprising series condensers Xc and shunt resistances R is connected between the output terminals, the input terminals to form an oscillator, the negative resistance being controlled by a potentiometer R6 shunting the anode supply source.
GB11769/46A 1945-04-17 1946-04-17 Improvements in electron discharge tube amplifying or generating circuits Expired GB618252A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US618252XA 1945-04-17 1945-04-17

Publications (1)

Publication Number Publication Date
GB618252A true GB618252A (en) 1949-02-18

Family

ID=22038373

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11769/46A Expired GB618252A (en) 1945-04-17 1946-04-17 Improvements in electron discharge tube amplifying or generating circuits

Country Status (1)

Country Link
GB (1) GB618252A (en)

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