GB1487688A - Redundant electronic amplifier circuit - Google Patents

Redundant electronic amplifier circuit

Info

Publication number
GB1487688A
GB1487688A GB574975A GB574975A GB1487688A GB 1487688 A GB1487688 A GB 1487688A GB 574975 A GB574975 A GB 574975A GB 574975 A GB574975 A GB 574975A GB 1487688 A GB1487688 A GB 1487688A
Authority
GB
United Kingdom
Prior art keywords
amplifier
amplifiers
input
common
circuit
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
GB574975A
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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
Priority claimed from DE19742407421 external-priority patent/DE2407421C2/en
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB1487688A publication Critical patent/GB1487688A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K10/00—Arrangements for improving the operating reliability of electronic equipment, e.g. by providing a similar standby unit
    • 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
    • H03F1/52—Circuit arrangements for protecting such amplifiers
    • H03F1/526—Circuit arrangements for protecting such amplifiers protecting by using redundant amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Amplifiers (AREA)

Abstract

1487688 Amplifiers LICENTIA PATENT VERWALTUNGS GmbH 11 Feb 1975 [16 Feb 1974] 5749/75 Heading H3W A redundant amplifier circuit, for high reliability, comprises at least three amplifiers 35-37 connected in parallel, each with one input coupled to a common input 55 and their outputs coupled via respective resistances 38-40 to a common output 41, and negative feedback between the common output and the other inputs of each of the amplifiers. Differential (as shown) or asymmetrical amplifiers may be used, and there may be a separate feedback network for each amplifier, e.g. 42, 43, 45 for amplifier 35, or alternatively a single feedback network (8-12), Fig. 1 (not shown), to which the amplifier inputs in common are connected. Resistive and/or reactive elements may be included in a feedback path. The input signal U Eges may be individually compared with the reference voltages of similar Zener diodes 56, 58, 60 (one for each amplifier), the voltage difference controlling the input to each amplifier respectively. It is stated that with such a circuit using three amplifiers the following types of failure may be tolerated: (1) one amplifier producing the positive or negative supply voltage, (2) two amplifiers producing the supply voltage but with opposite signs, (3) two amplifiers having zero output, (4) one Zener diode short-circuited. It is also stated that the action of the circuit depends on one amplifier operating in an analogue mode while the other two may be saturated.
GB574975A 1974-02-16 1975-02-11 Redundant electronic amplifier circuit Expired GB1487688A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742407421 DE2407421C2 (en) 1974-02-16 Redundant electronic amplifier circuit

Publications (1)

Publication Number Publication Date
GB1487688A true GB1487688A (en) 1977-10-05

Family

ID=5907558

Family Applications (1)

Application Number Title Priority Date Filing Date
GB574975A Expired GB1487688A (en) 1974-02-16 1975-02-11 Redundant electronic amplifier circuit

Country Status (4)

Country Link
BE (1) BE825297A (en)
FR (1) FR2261651B3 (en)
GB (1) GB1487688A (en)
IT (1) IT1031648B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031182B1 (en) * 1979-12-19 1983-07-20 Koninklijke Philips Electronics N.V. Amplifier arrangement with parallel-operated amplifier sections

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031182B1 (en) * 1979-12-19 1983-07-20 Koninklijke Philips Electronics N.V. Amplifier arrangement with parallel-operated amplifier sections

Also Published As

Publication number Publication date
BE825297A (en) 1975-05-29
DE2407421B1 (en) 1975-05-28
FR2261651B3 (en) 1978-07-07
IT1031648B (en) 1979-05-10
FR2261651A1 (en) 1975-09-12

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee