GB675268A - Improvements in d.c. amplifying systems - Google Patents

Improvements in d.c. amplifying systems

Info

Publication number
GB675268A
GB675268A GB1422648A GB1422648A GB675268A GB 675268 A GB675268 A GB 675268A GB 1422648 A GB1422648 A GB 1422648A GB 1422648 A GB1422648 A GB 1422648A GB 675268 A GB675268 A GB 675268A
Authority
GB
United Kingdom
Prior art keywords
amplifier
valve
input
input electrode
point
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
GB1422648A
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.)
THOMAS HERBERT MACKENZIE
British Thomson Houston Co Ltd
Original Assignee
THOMAS HERBERT MACKENZIE
British Thomson Houston 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 THOMAS HERBERT MACKENZIE, British Thomson Houston Co Ltd filed Critical THOMAS HERBERT MACKENZIE
Priority to GB1422648A priority Critical patent/GB675268A/en
Publication of GB675268A publication Critical patent/GB675268A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/34—DC amplifiers in which all stages are DC-coupled
    • H03F3/36—DC amplifiers in which all stages are DC-coupled with tubes only

Landscapes

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

Abstract

675,268. Valve amplifying circuits. BRITISH THOMSON-HOUSTON CO., Ltd., and MACKENZIE, T. H. June 1, 1949 [May 26, 1948], No. 14226/48. Class 40 (vi). A D.C. amplifier of the type in which appropriate fractions of input and output voltages are combined in a resistor network and the combination fed to the input electrode of the first valve of the amplifier, the negative feedback serving to correct the scale error of the amplifier, is provided with an auxiliary D.C. amplifier in the connection between the resistor network and the input electrode which serves to correct any tendency of the zero point of the main amplifier to depart from zero. As shown the main amplifier comprises valves V1 and V2 coupled by a battery 14 and with a feed-back connection leading to resistors 7 and 8. Connected to the junction of these resistors is an auxiliary amplifier 16 utilizing two synchronized switches 22 and 23 to convert the input to valve 16 to A.C. and reconvert its output to D.C. The latter is connected to the input electrode of valve V1. A condenser 9 is interposed between this point and the main point 5 for the whole apparatus. The output appears across resistance 4 at terminal 3. Specification 622,491 is referred to.
GB1422648A 1948-05-26 1948-05-26 Improvements in d.c. amplifying systems Expired GB675268A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1422648A GB675268A (en) 1948-05-26 1948-05-26 Improvements in d.c. amplifying systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1422648A GB675268A (en) 1948-05-26 1948-05-26 Improvements in d.c. amplifying systems

Publications (1)

Publication Number Publication Date
GB675268A true GB675268A (en) 1952-07-09

Family

ID=10037327

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1422648A Expired GB675268A (en) 1948-05-26 1948-05-26 Improvements in d.c. amplifying systems

Country Status (1)

Country Link
GB (1) GB675268A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2888523A (en) * 1954-12-08 1959-05-26 White Rodgers Company Carrier frequency d.c. amplifier
US2915628A (en) * 1953-07-03 1959-12-01 Honeywell Regulator Co Electrical control apparatus
US3825854A (en) * 1970-12-10 1974-07-23 Honeywell Inf Systems Amplifier with substantially zero distortion products
US5034698A (en) * 1990-01-22 1991-07-23 Hiro Moriyasu Dual-path wideband and precision data acquisition system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2915628A (en) * 1953-07-03 1959-12-01 Honeywell Regulator Co Electrical control apparatus
US2888523A (en) * 1954-12-08 1959-05-26 White Rodgers Company Carrier frequency d.c. amplifier
US3825854A (en) * 1970-12-10 1974-07-23 Honeywell Inf Systems Amplifier with substantially zero distortion products
US5034698A (en) * 1990-01-22 1991-07-23 Hiro Moriyasu Dual-path wideband and precision data acquisition system

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