GB550171A - Circuit arrangements comprising at least one amplifier for amplitude modulated oscillations - Google Patents

Circuit arrangements comprising at least one amplifier for amplitude modulated oscillations

Info

Publication number
GB550171A
GB550171A GB666441A GB666441A GB550171A GB 550171 A GB550171 A GB 550171A GB 666441 A GB666441 A GB 666441A GB 666441 A GB666441 A GB 666441A GB 550171 A GB550171 A GB 550171A
Authority
GB
United Kingdom
Prior art keywords
amplifier
diode
output
amplitude modulated
direct
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
GB666441A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Priority to GB666441A priority Critical patent/GB550171A/en
Publication of GB550171A publication Critical patent/GB550171A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/02—Details
    • H03C1/06—Modifications of modulator to reduce distortion, e.g. by feedback, and clearly applicable to more than one type of modulator

Landscapes

  • Amplifiers (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

550,171. Valve amplifying circuits. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). May 23, 1941, No. 6664. [Class 40 (v)] Negative feedback is provided in an amplitude modulated carrier frequency amplifier by supplying detected energy from the output. Both direct and alternating voltage components are supplied, if desired through an amplifier, to a diode connected in parallel to an oscillating circuit tuned to the carrier frequency and provided in the input to the amplifier. The direct voltage component is applied in such sense as to bias the diode positively with increase in carrier wave amplitude. Fig. 2 shows a transmitting amplifier 2 in which increasing positive bias is applied to the diode 9 with increase in output by the diode detector 5. Fig. 3 shows a receiver with the negative feedback applied to the intermediate frequency amplifier 22 and consisting of direct current from the second detector 23 and low frequency from the output, the two components of the feedback being separately controllable by potentiometers 28, 29.
GB666441A 1941-05-23 1941-05-23 Circuit arrangements comprising at least one amplifier for amplitude modulated oscillations Expired GB550171A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB666441A GB550171A (en) 1941-05-23 1941-05-23 Circuit arrangements comprising at least one amplifier for amplitude modulated oscillations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB666441A GB550171A (en) 1941-05-23 1941-05-23 Circuit arrangements comprising at least one amplifier for amplitude modulated oscillations

Publications (1)

Publication Number Publication Date
GB550171A true GB550171A (en) 1942-12-28

Family

ID=9818560

Family Applications (1)

Application Number Title Priority Date Filing Date
GB666441A Expired GB550171A (en) 1941-05-23 1941-05-23 Circuit arrangements comprising at least one amplifier for amplitude modulated oscillations

Country Status (1)

Country Link
GB (1) GB550171A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2647173A (en) * 1947-11-17 1953-07-28 Gen Electric Multiple feedback system
CN109995332A (en) * 2011-09-27 2019-07-09 英特尔德国有限责任公司 System and method for calibrating sequential logic mismatch for envelope-tracking emission system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2647173A (en) * 1947-11-17 1953-07-28 Gen Electric Multiple feedback system
CN109995332A (en) * 2011-09-27 2019-07-09 英特尔德国有限责任公司 System and method for calibrating sequential logic mismatch for envelope-tracking emission system
CN109995332B (en) * 2011-09-27 2023-06-13 英特尔德国有限责任公司 System and method for calibrating timing mismatch for envelope tracking transmission system

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