Individual Bioinstrumentation Projects

In past years we have had individual student projects. At this point, we're not sure whether we will this year or not. Several undergraduate TA's are doing projects that will be developed into labs, and the in-progress notes are stored below.

• Areej Sajjad is developing a lab around the phase lock loop (CD4046). Lecture notes from previous years on the phase lock loop are available here. A nice description of the Phase II comparator is here.
• Kate Campbell is developing a lab on MOSFET's, the BS170. The first half of the lab will involve determining their basic behavior, in particular, collecting a series of measurements of ID vs VGS vs. VDS> and hopefully creating a graph similar to Fig. 4.92 page 472. This should demonstrate both the Ohmic region and the Active Region. We expect a theshhold voltage of between 2 and 3 V. The device can handle an ID of about 500 ma. It would also be nice to demonstrate the incredibly high imput impedance. The seoncd half of the lab will involve building some cool circuit that takes advantage of the very high input impedance.