US2469218A - Negative feed-back transmission system - Google Patents

Negative feed-back transmission system Download PDF

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Publication number
US2469218A
US2469218A US744845A US74484547A US2469218A US 2469218 A US2469218 A US 2469218A US 744845 A US744845 A US 744845A US 74484547 A US74484547 A US 74484547A US 2469218 A US2469218 A US 2469218A
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US
United States
Prior art keywords
frequency
network
feedback
gain
signal
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 - Lifetime
Application number
US744845A
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English (en)
Inventor
Henry P Thomas
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.)
General Electric Co
Original Assignee
General Electric Co
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
Priority to BE483007D priority Critical patent/BE483007A/xx
Priority to NL73380D priority patent/NL73380C/xx
Priority to NL62283208A priority patent/NL140106B/xx
Priority to FR965426D priority patent/FR965426A/fr
Application filed by General Electric Co filed Critical General Electric Co
Priority to US744845A priority patent/US2469218A/en
Application granted granted Critical
Publication of US2469218A publication Critical patent/US2469218A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/08—Modifications of modulator to linearise modulation, e.g. by feedback, and clearly applicable to more than one type of modulator

Definitions

  • this lastmentioned network is adapted to control the amplitude of the main signal applied to the input terminal of the signal-translating means so that a relatively large frequencies when the negative feedback signal is large, and a, smaller signal is applied at higher particularly at certain relatively main signal is applied at lowr frequencies when the negative feedback signal is small. Since the main applied signal and the feedback signal are opposed to one another, the net applied signal and hence the output signal are determined by their difference. lation of the two networks may be adjusted so that the aplification of the entire system is constant under various conditions of operation. Hence negative feedback is utilized with its attendant advantages, while self-oscillation and variations in the amplification are prevented, as desired.

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  • Amplifiers (AREA)
US744845A 1947-04-30 1947-04-30 Negative feed-back transmission system Expired - Lifetime US2469218A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE483007D BE483007A (zh) 1947-04-30
NL73380D NL73380C (zh) 1947-04-30
NL62283208A NL140106B (nl) 1947-04-30 Werkwijze voor het bedrijven van een brandstofelement.
FR965426D FR965426A (zh) 1947-04-30
US744845A US2469218A (en) 1947-04-30 1947-04-30 Negative feed-back transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US744845A US2469218A (en) 1947-04-30 1947-04-30 Negative feed-back transmission system

Publications (1)

Publication Number Publication Date
US2469218A true US2469218A (en) 1949-05-03

Family

ID=24994186

Family Applications (1)

Application Number Title Priority Date Filing Date
US744845A Expired - Lifetime US2469218A (en) 1947-04-30 1947-04-30 Negative feed-back transmission system

Country Status (4)

Country Link
US (1) US2469218A (zh)
BE (1) BE483007A (zh)
FR (1) FR965426A (zh)
NL (2) NL73380C (zh)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2673332A (en) * 1948-05-13 1954-03-23 Rca Corp Phase modulation
US2684438A (en) * 1950-08-15 1954-07-20 Murray G Crosby Relay feedback system
US2690538A (en) * 1949-12-29 1954-09-28 Rca Corp Frequency-stabilizing and frequency-modulating system for oscillators
US2713664A (en) * 1948-04-02 1955-07-19 Motorola Inc Limiter for phase modulation
US2728892A (en) * 1952-06-18 1955-12-27 Rca Corp Modulator circuit
US2745063A (en) * 1950-03-29 1956-05-08 Hartford Nat Bank & Trust Co Pulse-code modulator
US2757340A (en) * 1951-11-13 1956-07-31 Csf Improvements relating to frequency modulated ultrahigh frequency systems
US3740670A (en) * 1972-05-15 1973-06-19 Bendix Corp Integral rf modamp

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2279659A (en) * 1937-04-13 1942-04-14 Rca Corp Frequency modulator
US2279660A (en) * 1937-04-13 1942-04-14 Rca Corp Wave length modulation system
US2296962A (en) * 1939-12-22 1942-09-29 Rca Corp Frequency modulation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2279659A (en) * 1937-04-13 1942-04-14 Rca Corp Frequency modulator
US2279660A (en) * 1937-04-13 1942-04-14 Rca Corp Wave length modulation system
US2296962A (en) * 1939-12-22 1942-09-29 Rca Corp Frequency modulation

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2713664A (en) * 1948-04-02 1955-07-19 Motorola Inc Limiter for phase modulation
US2673332A (en) * 1948-05-13 1954-03-23 Rca Corp Phase modulation
US2690538A (en) * 1949-12-29 1954-09-28 Rca Corp Frequency-stabilizing and frequency-modulating system for oscillators
US2745063A (en) * 1950-03-29 1956-05-08 Hartford Nat Bank & Trust Co Pulse-code modulator
US2684438A (en) * 1950-08-15 1954-07-20 Murray G Crosby Relay feedback system
US2757340A (en) * 1951-11-13 1956-07-31 Csf Improvements relating to frequency modulated ultrahigh frequency systems
US2728892A (en) * 1952-06-18 1955-12-27 Rca Corp Modulator circuit
US3740670A (en) * 1972-05-15 1973-06-19 Bendix Corp Integral rf modamp

Also Published As

Publication number Publication date
BE483007A (zh)
NL140106B (nl)
NL73380C (zh)
FR965426A (zh) 1950-09-12

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