GB1283172A - Direct-current amplifying circuit - Google Patents

Direct-current amplifying circuit

Info

Publication number
GB1283172A
GB1283172A GB1332371A GB1332371A GB1283172A GB 1283172 A GB1283172 A GB 1283172A GB 1332371 A GB1332371 A GB 1332371A GB 1332371 A GB1332371 A GB 1332371A GB 1283172 A GB1283172 A GB 1283172A
Authority
GB
United Kingdom
Prior art keywords
amplifier
direct
terminal
switch
output
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
GB1332371A
Inventor
Kozo Uchida
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.)
Iwatsu Electric Co Ltd
Original Assignee
Iwatsu Electric 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 Iwatsu Electric Co Ltd filed Critical Iwatsu Electric Co Ltd
Publication of GB1283172A publication Critical patent/GB1283172A/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
    • H03F3/38—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers
    • H03F3/40—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers with tubes only
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
    • 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
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/303—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters using a switching device
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/261—Amplifier which being suitable for instrumentation applications

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Amplifiers (AREA)

Abstract

1283172 Amplifiers IWASAKI TSUSHINKI KK 5 May 1971 [13 May 1970] 13323/71 Heading H3W In a direct-current amplifying arrangement signal is applied from terminal 1 over a switch 2 with an alternative earth position to the input of a direct-current amplifier 7. The output of amplifier 7 is applied to the out-of-phase input 8 of a differential amplifier which applies an output to the terminal 11. This output is applied to charge a capacitor 16 over switch 15 which is closed when the switch 2 is on earth position, so that the capacitor 16 is charged up to provide an input to the in-phase input terminal 9 which compensates for drift in the system. A further amplifier (13) may be included in the feedback path, either between the output terminal 11 and switch 15 (Fig. 1, not shown) or alternatively between capacitor 16 and the amplifier input terminal 9 (Fig. 3, not shown).
GB1332371A 1970-05-13 1971-05-05 Direct-current amplifying circuit Expired GB1283172A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4004170 1970-05-13

Publications (1)

Publication Number Publication Date
GB1283172A true GB1283172A (en) 1972-07-26

Family

ID=12569811

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1332371A Expired GB1283172A (en) 1970-05-13 1971-05-05 Direct-current amplifying circuit

Country Status (4)

Country Link
DE (1) DE2123047B2 (en)
FR (1) FR2093486A5 (en)
GB (1) GB1283172A (en)
NL (1) NL7106439A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2951024A1 (en) * 1979-12-19 1981-06-25 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt AMPLIFIER CIRCUIT
GB2149248A (en) * 1983-10-27 1985-06-05 Secr Defence Offset compensation of amplifiers

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3978399A (en) * 1975-02-14 1976-08-31 Walker Magnetics Group, Inc. Integrating fluxmeter with input current compensation to cancel drift
US4195266A (en) * 1978-06-01 1980-03-25 Intersil, Inc., Commutating signal level translator
NL184588C (en) * 1978-10-26 1989-09-01 Hazemeijer Bv CAPACITIVE VOLTAGE DIVIDER.
US4274056A (en) * 1978-11-08 1981-06-16 Sundstrand Data Control, Inc. Charge amplifier with minimum offset voltage
US4365204A (en) * 1980-09-08 1982-12-21 American Microsystems, Inc. Offset compensation for switched capacitor integrators

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2951024A1 (en) * 1979-12-19 1981-06-25 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt AMPLIFIER CIRCUIT
GB2149248A (en) * 1983-10-27 1985-06-05 Secr Defence Offset compensation of amplifiers

Also Published As

Publication number Publication date
DE2123047A1 (en) 1971-11-18
FR2093486A5 (en) 1972-01-28
DE2123047B2 (en) 1973-06-20
NL7106439A (en) 1971-11-16

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees