GB751533A - Improvements in or relating to direct voltage amplifier circuits - Google Patents

Improvements in or relating to direct voltage amplifier circuits

Info

Publication number
GB751533A
GB751533A GB11835/54A GB1183554A GB751533A GB 751533 A GB751533 A GB 751533A GB 11835/54 A GB11835/54 A GB 11835/54A GB 1183554 A GB1183554 A GB 1183554A GB 751533 A GB751533 A GB 751533A
Authority
GB
United Kingdom
Prior art keywords
resistors
amplified
output
direct voltage
relating
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
GB11835/54A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB751533A publication Critical patent/GB751533A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measuring Volume Flow (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Amplifiers (AREA)

Abstract

751,533. Electric amplifiers. PHILIPS ELECTRICAL INDUSTRIES, Ltd. April 23, 1954 [April 28, 1953], No. 11835/54. Class 40 (4). [Also in Groups XL (b) and XL (c)] In an amplifier for direct current or low frequency alternating current, resistors 7, 8 having a high positive or negative temperature coefficient and included in a bridge circuit supplied with an auxiliary alternating current at terminals 2, are heated by resistors 5, 6, the former of which generates heat in accordance with the direct voltage to be amplified applied at terminals 1. The amplified output is obtained by demodulating the output from the bridge circuit, which output may be amplified in a valve 12 if desired. Valve 3 pre-amplifies the applied signals and the resistors 6, 8 compensate for changes in anode supply and ambient temperature.
GB11835/54A 1953-04-28 1954-04-23 Improvements in or relating to direct voltage amplifier circuits Expired GB751533A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL751533X 1953-04-28

Publications (1)

Publication Number Publication Date
GB751533A true GB751533A (en) 1956-06-27

Family

ID=19825130

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11835/54A Expired GB751533A (en) 1953-04-28 1954-04-23 Improvements in or relating to direct voltage amplifier circuits

Country Status (3)

Country Link
DE (1) DE1000866B (en)
FR (1) FR1109411A (en)
GB (1) GB751533A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3219942A (en) * 1960-11-18 1965-11-23 Cons Electrodynamics Corp Electrical circuit using thermal elements

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE469233A (en) * 1943-05-14
US2407293A (en) * 1944-07-26 1946-09-10 Bell Telephone Labor Inc Frequency modulation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3219942A (en) * 1960-11-18 1965-11-23 Cons Electrodynamics Corp Electrical circuit using thermal elements

Also Published As

Publication number Publication date
FR1109411A (en) 1956-01-27
DE1000866B (en) 1957-01-17

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