GB130520A - Improvements in and relating to Electromagnetic Wave Signalling Systems. - Google Patents

Improvements in and relating to Electromagnetic Wave Signalling Systems.

Info

Publication number
GB130520A
GB130520A GB1807818A GB1807818A GB130520A GB 130520 A GB130520 A GB 130520A GB 1807818 A GB1807818 A GB 1807818A GB 1807818 A GB1807818 A GB 1807818A GB 130520 A GB130520 A GB 130520A
Authority
GB
United Kingdom
Prior art keywords
relating
electromagnetic wave
grid
signalling systems
wave signalling
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
GB1807818A
Inventor
Norman Lea
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1807818A priority Critical patent/GB130520A/en
Publication of GB130520A publication Critical patent/GB130520A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/16—Amplitude modulation by means of discharge device having at least three electrodes
    • H03C1/18—Amplitude modulation by means of discharge device having at least three electrodes carrier applied to control grid
    • H03C1/22—Amplitude modulation by means of discharge device having at least three electrodes carrier applied to control grid modulating signal applied to same grid
    • 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
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/10—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being vacuum tube

Landscapes

  • Transmitters (AREA)

Abstract

130,520. Lea, N. Nov. 4, 1918. Wireless telephony and signalling.-In wireless telephony or signalling, the potential on the grid leak 2 of a valve generator 1 is used to determine the mean grid potential of a control valve 5. The plate and grid circuits of the generator 1 are coupled in the usual way by the coils 6, 8. A transformer 4 couples the grid circuit of the control valve 5 to a microphone or other control circuit 11.
GB1807818A 1918-11-04 1918-11-04 Improvements in and relating to Electromagnetic Wave Signalling Systems. Expired GB130520A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1807818A GB130520A (en) 1918-11-04 1918-11-04 Improvements in and relating to Electromagnetic Wave Signalling Systems.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1807818A GB130520A (en) 1918-11-04 1918-11-04 Improvements in and relating to Electromagnetic Wave Signalling Systems.

Publications (1)

Publication Number Publication Date
GB130520A true GB130520A (en) 1919-08-07

Family

ID=32347834

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1807818A Expired GB130520A (en) 1918-11-04 1918-11-04 Improvements in and relating to Electromagnetic Wave Signalling Systems.

Country Status (1)

Country Link
GB (1) GB130520A (en)

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