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| Teaching Since: | May 2017 |
| Last Sign in: | 408 Weeks Ago |
| Questions Answered: | 66690 |
| Tutorials Posted: | 66688 |
MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
a) Assume the parasitic capacitance in the self-capacitance design, Cp = 30 pF, and the capacitance introduced by a touch is 15 pF. What is the capacitance at the touch point with respect to ground for the x-grid and y-grid electrodes closest to the touch point?
b) Assume the mutual capacitance in the mutual capacitance design Cmay = 30 pF, and the capacitance introduced by a touch is 15 pF. What is the mutual capacitance between the x- and y-grid electrodes closest to the touch point?
c) Compare your results in parts (a) and (b) – does touching the screen increase or decrease the capacitance in these two different capacitive touch screen designs?
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