GB544250A - Improvements in and relating to electric wave transmission devices - Google Patents

Improvements in and relating to electric wave transmission devices

Info

Publication number
GB544250A
GB544250A GB876340A GB876340A GB544250A GB 544250 A GB544250 A GB 544250A GB 876340 A GB876340 A GB 876340A GB 876340 A GB876340 A GB 876340A GB 544250 A GB544250 A GB 544250A
Authority
GB
United Kingdom
Prior art keywords
potentiometer
feedback
network
relating
wave transmission
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
GB876340A
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.)
Telephone Manufacturing Co Ltd
Original Assignee
Telephone Manufacturing Co Ltd
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 Telephone Manufacturing Co Ltd filed Critical Telephone Manufacturing Co Ltd
Priority to GB876340A priority Critical patent/GB544250A/en
Publication of GB544250A publication Critical patent/GB544250A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

544,250. Valve amplifying circuits. TELE. PHONE MANUFACTURING CO., Ltd., and PADDLE, L. H. April 23, 1941, No. 8763/40. [Class 40 (v)] In a negative feedback amplifier the feedback path includes an input inductance and an output inductance with capacity coupling there between and a potentiometer connected between the high potential ends of the inductances so that the part of the feedback that will pass through the network will depend on the potentiometer setting so as to provide a variable frequency characteristic to the amplifier. Fig. 2 shows a four terminal network 9, 10, 11 shunted by potentiometer 14 to control the proportion of the feedback voltage traversing the network. The potentiometer may be controlled manually or by a pilot signal.
GB876340A 1941-04-23 1941-04-23 Improvements in and relating to electric wave transmission devices Expired GB544250A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB876340A GB544250A (en) 1941-04-23 1941-04-23 Improvements in and relating to electric wave transmission devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB876340A GB544250A (en) 1941-04-23 1941-04-23 Improvements in and relating to electric wave transmission devices

Publications (1)

Publication Number Publication Date
GB544250A true GB544250A (en) 1942-04-03

Family

ID=9858802

Family Applications (1)

Application Number Title Priority Date Filing Date
GB876340A Expired GB544250A (en) 1941-04-23 1941-04-23 Improvements in and relating to electric wave transmission devices

Country Status (1)

Country Link
GB (1) GB544250A (en)

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