Lab 8 - Capacitors & Capacitive Sensors

Note:  This writeup is due at the start of Lab 9.

Lab 8:

ECE1250U14_Lab8_Capacitors CMF.doc Download ECE1250U14_Lab8_Capacitors CMF.doc

Also need: NI_lab_2_ac_measurements.pdf Download NI_lab_2_ac_measurements.pdf

Prelab videos:

MyDAQ Function Generator:

http://www.youtube.com/watch?v=hCR5hlDLyhU Links to an external site.http://www.youtube.com/watch?v=hCR5hIDLyhU Links to an external site.

MyDAQ scope basics:http://www.youtube.com/watch?v=W4_OuCKbIeQ Links to an external site.

MyDAQ scope:http://www.youtube.com/watch?v=E92mI4n0zvo

Reference material:

MyDAQ tutorials  Labs: My Daq Resources 

also: Connecting the Function Generator to the scope: http://decibel.ni.com/content/docs/DOC-12940 (Links to an external site.)

What should the voltages look like?  Matlab files:

ECE1250_RCcharging.m Download ECE1250_RCcharging.m

ECE1250_RCdischarging.m Download ECE1250_RCdischarging.m

Overview of capacitive sensors (Links to an external site.)

Details of capacitive sensor development (Links to an external site.)

Shapes of capacitive sensors (Links to an external site.)

More on shapes (Links to an external site.)

Relative permittivity of various materials (Links to an external site.)