GB201276A - Improvements in or relating to wireless systems - Google Patents

Improvements in or relating to wireless systems

Info

Publication number
GB201276A
GB201276A GB1304722A GB1304722A GB201276A GB 201276 A GB201276 A GB 201276A GB 1304722 A GB1304722 A GB 1304722A GB 1304722 A GB1304722 A GB 1304722A GB 201276 A GB201276 A GB 201276A
Authority
GB
United Kingdom
Prior art keywords
valve
control valve
key
main
grid
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
GB1304722A
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 GB1304722A priority Critical patent/GB201276A/en
Publication of GB201276A publication Critical patent/GB201276A/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
    • H03C1/20—Amplitude modulation by means of discharge device having at least three electrodes carrier applied to control grid modulating signal applied to anode

Landscapes

  • Transmitters (AREA)

Abstract

201,276. Hecht, N. F. S. May 9, 1922. Thermionic generators; keying systems. -Relates to wireless telegraphy or telephony systems wherein the emission from a power valve 1 is controlled by means of an auxiliary valve inserted in series with one of the hightension supply mains. According to the invention, the control valve 4 is inserted in the positive high - tension main and signalling is effected by means of a key 6, which connects the grid of the control valve 4 either to the negative main 10 or to the positive main 5. In the former case the control valve is practically non-conductive and very little energy passes to the power valve 1 and thence to the oscillatory circuit 2, 3. In the latter case, the valve 4 passes the full high-supply to the power valve which oscillates accordingly. Or the key may vary the value of a high resistance inserted between the grid and plate of the control valve. For telephony transmission the key 6 is replaced by the secondary of a microphone transformer.
GB1304722A 1922-05-09 1922-05-09 Improvements in or relating to wireless systems Expired GB201276A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1304722A GB201276A (en) 1922-05-09 1922-05-09 Improvements in or relating to wireless systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1304722A GB201276A (en) 1922-05-09 1922-05-09 Improvements in or relating to wireless systems

Publications (1)

Publication Number Publication Date
GB201276A true GB201276A (en) 1923-08-02

Family

ID=10015814

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1304722A Expired GB201276A (en) 1922-05-09 1922-05-09 Improvements in or relating to wireless systems

Country Status (1)

Country Link
GB (1) GB201276A (en)

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