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http://hdl.handle.net/11375/7581
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DC Field | Value | Language |
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dc.contributor.advisor | Barber, H.D. | en_US |
dc.contributor.advisor | Chisholm, S.H. | en_US |
dc.contributor.author | Hayes, Rudy Hasler | en_US |
dc.date.accessioned | 2014-06-18T16:39:47Z | - |
dc.date.available | 2014-06-18T16:39:47Z | - |
dc.date.created | 2009-07-13 | en_US |
dc.date.issued | 1979-04 | en_US |
dc.identifier.other | opendissertations/285 | en_US |
dc.identifier.other | 1329 | en_US |
dc.identifier.other | 895429 | en_US |
dc.identifier.uri | http://hdl.handle.net/11375/7581 | - |
dc.description.abstract | <p>A typical instrumentation problem is the detection of a differential signal in the presence of a common-mode signal. In the case of measuring myo-electric signals, the common-mode signals present can be 10²-10⁴ larger than the differential signal. In such instances, the attenuation of these unwanted common-mode signals require complex circuit designs.</p> <p>In this work an investigation of the common-mode signal path led to the development of a general approach to the problem of unwanted signals arising from common-mode signal sources. It was found possible to write the overall common-mode gain as a product of the differential amplifier common-mode response and the isolation gain. The isolation gain depends on the ratio of the impedance of the common-mode signal path to the differential amplifier input impedance. The impedance of the common-mode signal path may be increased by employing in the amplifier system a self-contained power supply and an output coupler device such as a transformer.</p> <p>The general approach was used to design an amplifier system to measure myo-electric signals. This amplifier system gave a much improved common-mode signal rejection over currently used systems which typically have 40 db of differential gain but only -30 db of common-mode gain at 60 Hz. The improvement in common-mode signal rejection was 25 db.</p> | en_US |
dc.subject | Electrical and Electronics | en_US |
dc.subject | Electrical and Electronics | en_US |
dc.title | A General Approach to Common-Mode Signal Rejection with Application to Myo-electric Signal Measurements | en_US |
dc.type | thesis | en_US |
dc.contributor.department | Electrical Engineering | en_US |
dc.description.degree | Master of Engineering (ME) | en_US |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Size | Format | |
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fulltext.pdf | 1.25 MB | Adobe PDF | View/Open |
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