The preamplifier used in square wave blood flowmeter has a CMRR of _______ dB.(a) 96(b) 100(c) 106(d) 110I have been asked this question in exam.This key question is from Cyber Medicine in division Telemedicine Technology of Biomedical Instrumentation

The preamplifier used in square wave blood flowmeter has a CMRR of ___

1.	The preamplifier used in square wave blood flowmeter has a CMRR of _______ dB.(a) 96(b) 100(c) 106(d) 110I have been asked this question in exam.This key question is from Cyber Medicine in division Telemedicine Technology of Biomedical Instrumentation
Answer» The correct answer is (C) 106 To explain I would say: The preamplifier USED by Goodman (1969(a)) has a CMRR of 106 dB (200,000 : 1) with a common mode input impedance of 150 MW. The preamplifier GAIN is of the order of 1000. The preamplifier also must incorporate the facility for ‘probe balance’ by which signals in phase with the magnet current can be selected to balance background voltages in phase with flow voltages.

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The preamplifier used in square wave blood flowmeter has a CMRR of _______ dB.(a) 96(b) 100(c) 106(d) 110I have been asked this question in exam.This key question is from Cyber Medicine in division Telemedicine Technology of Biomedical Instrumentation

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