FR2317807A1 - Radio transmitter withAM grid modulation - has preamplifier synchronised with modulation signal to raise efficiency of transmission - Google Patents

Radio transmitter withAM grid modulation - has preamplifier synchronised with modulation signal to raise efficiency of transmission

Info

Publication number
FR2317807A1
FR2317807A1 FR7521547A FR7521547A FR2317807A1 FR 2317807 A1 FR2317807 A1 FR 2317807A1 FR 7521547 A FR7521547 A FR 7521547A FR 7521547 A FR7521547 A FR 7521547A FR 2317807 A1 FR2317807 A1 FR 2317807A1
Authority
FR
France
Prior art keywords
modulation
preamplifier
grid
synchronised
radio transmitter
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.)
Granted
Application number
FR7521547A
Other languages
French (fr)
Other versions
FR2317807B1 (en
Inventor
Hristo Atanassov Bachvarov
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.)
TS RASVOYNA LAB
Original Assignee
TS RASVOYNA LAB
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 TS RASVOYNA LAB filed Critical TS RASVOYNA LAB
Priority to FR7521547A priority Critical patent/FR2317807A1/en
Publication of FR2317807A1 publication Critical patent/FR2317807A1/en
Application granted granted Critical
Publication of FR2317807B1 publication Critical patent/FR2317807B1/fr
Granted 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

Landscapes

  • Amplifiers (AREA)
  • Transmitters (AREA)

Abstract

The radio transmitter is used for SW, MW and LW outputs and has AM grid modulation. It has a high efficiency independent of the modulation factor and it has low nonlinear distortion even at large modulation factors. The modulator controls the main power amplifier and is also connected via a diode to the sync. control circuit that controls the preamplifier. The sync. control circuit contains a transistor in series with the cathode circuit of the preamplifier (2) and connected by its base to the rectifier. The output amplitude of the preamplifier which is used to drive the grid of the power stage (3) is therefore synchronised with the modulation signal from the modulator (6).
FR7521547A 1975-07-09 1975-07-09 Radio transmitter withAM grid modulation - has preamplifier synchronised with modulation signal to raise efficiency of transmission Granted FR2317807A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7521547A FR2317807A1 (en) 1975-07-09 1975-07-09 Radio transmitter withAM grid modulation - has preamplifier synchronised with modulation signal to raise efficiency of transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7521547A FR2317807A1 (en) 1975-07-09 1975-07-09 Radio transmitter withAM grid modulation - has preamplifier synchronised with modulation signal to raise efficiency of transmission

Publications (2)

Publication Number Publication Date
FR2317807A1 true FR2317807A1 (en) 1977-02-04
FR2317807B1 FR2317807B1 (en) 1977-12-16

Family

ID=9157713

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7521547A Granted FR2317807A1 (en) 1975-07-09 1975-07-09 Radio transmitter withAM grid modulation - has preamplifier synchronised with modulation signal to raise efficiency of transmission

Country Status (1)

Country Link
FR (1) FR2317807A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2197267A1 (en) * 1972-08-25 1974-03-22 Ts Razvoyna Lab

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2197267A1 (en) * 1972-08-25 1974-03-22 Ts Razvoyna Lab

Also Published As

Publication number Publication date
FR2317807B1 (en) 1977-12-16

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Legal Events

Date Code Title Description
ST Notification of lapse