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Bio-isolated dc operational amplifierA bio-isolated dc operational amplifier is described for use in making bioelectrical measurements of a patient while providing isolation of the patient from electrical shocks. The circuit contains a first operational amplifier coupled to the patient with its output coupled in a forward loop through a first optic coupler to a second operational amplifier. The output of the second operational amplifier is coupled to suitable monitoring circuitry via a feedback circuit including a second optic coupler to the input of the first operational amplifier.
Document ID
19740013738
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Lee, R. D. (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
September 3, 2013
Publication Date
May 14, 1974
Subject Category
Thermodynamics And Combustion
Report/Patent Number
Patent Application Number: US-PATENT-APPL-SN-267862
Patent Number: US-PATENT-3,811,094
Patent Number: NASA-CASE-ARC-10596-1
Accession Number
74N21851
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-3,811,094|NASA-CASE-ARC-10596-1
Patent Application
US-PATENT-APPL-SN-267862

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