GB458450A - Improvements in or relating to electron discharge device amplifiers - Google Patents

Improvements in or relating to electron discharge device amplifiers

Info

Publication number
GB458450A
GB458450A GB17929/35A GB1792935A GB458450A GB 458450 A GB458450 A GB 458450A GB 17929/35 A GB17929/35 A GB 17929/35A GB 1792935 A GB1792935 A GB 1792935A GB 458450 A GB458450 A GB 458450A
Authority
GB
United Kingdom
Prior art keywords
mesh
resistance
coupling
show
condenser
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
GB17929/35A
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph 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 Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Priority to GB17929/35A priority Critical patent/GB458450A/en
Priority to US83867A priority patent/US2194555A/en
Publication of GB458450A publication Critical patent/GB458450A/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
    • H03F1/42—Modifications of amplifiers to extend the bandwidth
    • H03F1/48—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers
    • H03F1/50—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers with tubes only
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S128/00—Surgery
    • Y10S128/902—Biological signal amplifier

Abstract

458,450. Valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London, and KEALL, O. E., 32, Rainsford Avenue, Chelmsford, Essex. June 21, 1935, No. 17929. [Classes 40 (iii) and 40 (v)] Resistance-coupled amplifiers for frequencies as low as 0À1 c. /sec. and suitable for use with cardiographs and the like are provided with a resistance 9, which may be 1M#. in the example described,- shunted by a capacity 10 of 1ÁF. and connected in series with the coupling resistance 8 of 0À1 M#. for the purpose of giving the coupling a large time constant. The network 8, 9, 10 is connected to the grid side of the coupling condenser 7 so that anode current does not flow through it. Curve E, Fig. 3, show the gain plotted against frequency when the mesh 9, 10 is omitted, while curves D, F show the effect of the mesh with a large and a small value, respectively, of condenser 10. Thus the device can have a high-pass or a bandpass filtering effect. The low-frequency cutoff can be sharpened by the addition of inductance in parallel with the mesh 9, 10.
GB17929/35A 1935-06-21 1935-06-21 Improvements in or relating to electron discharge device amplifiers Expired GB458450A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB17929/35A GB458450A (en) 1935-06-21 1935-06-21 Improvements in or relating to electron discharge device amplifiers
US83867A US2194555A (en) 1935-06-21 1936-06-06 Electron discharge device amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17929/35A GB458450A (en) 1935-06-21 1935-06-21 Improvements in or relating to electron discharge device amplifiers

Publications (1)

Publication Number Publication Date
GB458450A true GB458450A (en) 1936-12-21

Family

ID=10103711

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17929/35A Expired GB458450A (en) 1935-06-21 1935-06-21 Improvements in or relating to electron discharge device amplifiers

Country Status (2)

Country Link
US (1) US2194555A (en)
GB (1) GB458450A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2419682A (en) * 1942-02-11 1947-04-29 Jr Victor Guillemin Electrocardiotachometer
US2477644A (en) * 1945-12-08 1949-08-02 Standard Telephones Cables Ltd Electron discharge device and its circuits
US2647508A (en) * 1950-05-06 1953-08-04 Technicon Cardiograph Corp Esophageal switch for electrocardiograph apparatus

Also Published As

Publication number Publication date
US2194555A (en) 1940-03-26

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