GB1334674A - Electrical circuit arrangements incorporating amplifiers - Google Patents

Electrical circuit arrangements incorporating amplifiers

Info

Publication number
GB1334674A
GB1334674A GB1334674DA GB1334674A GB 1334674 A GB1334674 A GB 1334674A GB 1334674D A GB1334674D A GB 1334674DA GB 1334674 A GB1334674 A GB 1334674A
Authority
GB
United Kingdom
Prior art keywords
input
transistors
polarity
amplifiers
input terminals
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
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.)
Plessey Co Ltd
Original Assignee
Plessey 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Publication of GB1334674A publication Critical patent/GB1334674A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/25—Arrangements for performing computing operations, e.g. operational amplifiers for discontinuous functions, e.g. backlash, dead zone, limiting absolute value or peak value

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Amplifiers (AREA)

Abstract

1334674 Transistor amplifying circuits PLESSEY CO Ltd 19 April 1971 [2 Dec 1969] 58677/69 Heading H3T [Also in Division G4] In an amplifying circuit, the difference voltage across input terminals 5, 6, Fig. 1, is applied with one polarity to the input terminals of differential amplifier 12, and in the opposite polarity to the input terminals of differential amplifier 14. The outputs from amplifiers 12, 14 drive transistors 16, 18 which are biased to saturation in the absence of an input; thus, according to the polarity of the input at terminals 5, 6 one of the transistors 16, 18 remains in saturation and the other produces an output voltage of predetermined polarity and of magnitude dependent upon the modulus of the input voltage difference. The outputs from transistors 16, 18 are combined by means of resistors 26, 28. In a corresponding circuit, the transistors 40, 42 and 44, 46, Fig. 2, respectively, comprise the amplifiers 12, 14, the input voltage difference being applied directly to the bases of transistors 40, 44 from the input terminals 6, 5, respectively, and the input of reversed polarity is obtained by coupling the emitters of transistors 40, 44 by a common emitter resistor 48. According to the Provisional Specification, the arrangements may be used as full-wave detectors.
GB1334674D 1969-12-02 1969-12-02 Electrical circuit arrangements incorporating amplifiers Expired GB1334674A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5867769 1969-12-02

Publications (1)

Publication Number Publication Date
GB1334674A true GB1334674A (en) 1973-10-24

Family

ID=10482164

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1334674D Expired GB1334674A (en) 1969-12-02 1969-12-02 Electrical circuit arrangements incorporating amplifiers

Country Status (1)

Country Link
GB (1) GB1334674A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162456A (en) * 1978-01-10 1979-07-24 Sundstrand Data Control, Inc. Differential amplifying system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162456A (en) * 1978-01-10 1979-07-24 Sundstrand Data Control, Inc. Differential amplifying system

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Legal Events

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