GB755603A - Improvements in or relating to d.c. voltage amplifiers - Google Patents

Improvements in or relating to d.c. voltage amplifiers

Info

Publication number
GB755603A
GB755603A GB22946/52A GB2294652A GB755603A GB 755603 A GB755603 A GB 755603A GB 22946/52 A GB22946/52 A GB 22946/52A GB 2294652 A GB2294652 A GB 2294652A GB 755603 A GB755603 A GB 755603A
Authority
GB
United Kingdom
Prior art keywords
relating
sept
waveform
amplified
resistor
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
GB22946/52A
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
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB755603A publication Critical patent/GB755603A/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)
  • Amplifiers (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

755,603. Amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd. Sept. 12, 1952 [Sept. 27, 1951], No. 22946/52. Class 40 (6). In a D.C. amplifier in which the input is converted to A.C., amplified and rectified to provide an amplified D.C., a chopper system is employed with an unequal duty cycle. A D.C. source 1 supplies current to impedances 2, 3 the latter being shunted by a chopper 4 to feed a waveform 5 to the amplifier 6. The output from transformer 8 has a waveform 9 so that a D.C. potential h appears across resistor 10 and v across resistor 11. As these are in opposition the output D.C. is the difference, h - v.
GB22946/52A 1951-09-27 1952-09-12 Improvements in or relating to d.c. voltage amplifiers Expired GB755603A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US755603XA 1951-09-27 1951-09-27

Publications (1)

Publication Number Publication Date
GB755603A true GB755603A (en) 1956-08-22

Family

ID=22126545

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22946/52A Expired GB755603A (en) 1951-09-27 1952-09-12 Improvements in or relating to d.c. voltage amplifiers

Country Status (2)

Country Link
DE (1) DE1039098B (en)
GB (1) GB755603A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4367948A (en) * 1979-04-24 1983-01-11 Canon Kabushiki Kaisha Surface potential electrometer and image forming apparatus using the same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE306495C (en) *
DE345880C (en) * 1920-03-27 1921-12-20 Floeter & Merkel DC-AC converter with two primary windings connected in series
DE501967C (en) * 1929-08-16 1930-07-09 Hartmann & Braun Akt Ges Device for measuring small DC voltages using a tube amplifier and DC voltage display device
DE744627C (en) * 1942-06-06 1944-01-21 Telefunken Gmbh Pendulum inverters in push-pull or reversing pole connection
BE452891A (en) * 1942-11-16
FR917646A (en) * 1944-10-03 1947-01-16 Electrical pulse generator, more particularly intended for electrified fences

Also Published As

Publication number Publication date
DE1039098B (en) 1958-09-18

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