DocumentCode
1182537
Title
New Amplification Method for Depth Recording
Author
Bergveld, Piet
Author_Institution
Twente Institute of Technology, Enschede, Netherlands.
Issue
2
fYear
1968
fDate
4/1/1968 12:00:00 AM
Firstpage
102
Lastpage
105
Abstract
By placing a field-effect transistor (FET) directly on or near the test object and by supplying the source and drain from low-ohmic points, which follow the potential of the measuring signal with respect to earth, it is possible, with ordinary wires, to connect the test object with FET to the actual amplifier, which is placed at some distance from the test object. This is especially useful when it is not possible to place a complete amplifier close to the measuring point and when the size of a shielded or coaxial cable, used to connect a remote amplifier, causes difficulties.
Keywords
Cable shielding; Earth; Electrodes; FETs; Filters; Size measurement; Surface impedance; Testing; Voltage; Wires;
fLanguage
English
Journal_Title
Biomedical Engineering, IEEE Transactions on
Publisher
ieee
ISSN
0018-9294
Type
jour
DOI
10.1109/TBME.1968.4502544
Filename
4502544
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