GB584475A - Improvements in or relating to electrical amplifiers - Google Patents

Improvements in or relating to electrical amplifiers

Info

Publication number
GB584475A
GB584475A GB23729/44A GB2372944A GB584475A GB 584475 A GB584475 A GB 584475A GB 23729/44 A GB23729/44 A GB 23729/44A GB 2372944 A GB2372944 A GB 2372944A GB 584475 A GB584475 A GB 584475A
Authority
GB
United Kingdom
Prior art keywords
valve
frequency
network
output
gain
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
GB23729/44A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 BE471640D priority Critical patent/BE471640A/xx
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB23729/44A priority patent/GB584475A/en
Priority to ES172290A priority patent/ES172290A1/en
Priority to FR939202D priority patent/FR939202A/en
Publication of GB584475A publication Critical patent/GB584475A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
    • G01S13/34—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
    • 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)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Amplifiers (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

584,475. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd., and MORTLOCK, A. Nov. 28, 1944, No. 23729. [Class 40 (v)] An amplifier having a forward path, whose gain increases with frequency, is provided with feedback path including a cathode follower, and means to vary the gain of the feedback stage, so that the overall gain of the system at low frequencies approximates to that of the forward path, but tends to a constant value at high frequencies, the turning point varying with the frequency applied. As described the forward amplifier has two stages, coupled by the R.C. network 7, and the output is taken through network 8. The feedback path is coupled to the output terminals by the network 24, 25, 26 and comprises a variable-mu valve 18, with a potentiometer 19 partially shunted by a relatively low resistance 20 as load in its cathode circuit. The output of the valve 18 is applied through the network 21, 22, 23 to the bias resistance 11 in the cathode circuit of the valve 5. The desired characteristic. is obtained by biassing valve 18 in accordance with the log of the incoming frequency by means of a device 28 supplied with a variable frequency input which may be the frequency to be amplified. A device of this type .is described in 583,752, [Group XXXVI].
GB23729/44A 1944-11-28 1944-11-28 Improvements in or relating to electrical amplifiers Expired GB584475A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE471640D BE471640A (en) 1944-11-28
GB23729/44A GB584475A (en) 1944-11-28 1944-11-28 Improvements in or relating to electrical amplifiers
ES172290A ES172290A1 (en) 1944-11-28 1946-01-23 IMPROVEMENTS IN OR RELATED TO ELECTRICAL AMPLIFIERS
FR939202D FR939202A (en) 1944-11-28 1946-07-06 Improvements to electric wave amplifiers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23729/44A GB584475A (en) 1944-11-28 1944-11-28 Improvements in or relating to electrical amplifiers

Publications (1)

Publication Number Publication Date
GB584475A true GB584475A (en) 1947-01-15

Family

ID=10200332

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23729/44A Expired GB584475A (en) 1944-11-28 1944-11-28 Improvements in or relating to electrical amplifiers

Country Status (4)

Country Link
BE (1) BE471640A (en)
ES (1) ES172290A1 (en)
FR (1) FR939202A (en)
GB (1) GB584475A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2790943A (en) * 1951-08-27 1957-04-30 Honeywell Regulator Co Multiple gain amplifier for servo control
US2860194A (en) * 1953-09-25 1958-11-11 Int Standard Electric Corp Circuit arrangement for the transmission of signals

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2790943A (en) * 1951-08-27 1957-04-30 Honeywell Regulator Co Multiple gain amplifier for servo control
US2860194A (en) * 1953-09-25 1958-11-11 Int Standard Electric Corp Circuit arrangement for the transmission of signals

Also Published As

Publication number Publication date
FR939202A (en) 1948-11-08
BE471640A (en)
ES172290A1 (en) 1946-03-01

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