Individual Bioinstrumentation Projects

Here is a list of potential projects for inspired TAs or particularly motivated students.

• Show sampling theorem using the BLIP by acquiring a sine wave at below the Nyquist freqency and looking at it at the output of the D/A converter on the BLIP (which mirrors the voltage sampled at the A/D converter.
• Develop 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.
• Develop a lab on MOSFET's, the BS170. The first half of the lab could 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 of Scherz. 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. The seoncd half of the lab will involve building some cool circuit that takes advantage of the very high input impedance (we already use it to demonstrate the effect of static electricity with a balloon).
• Develop applications for the on-line Blip-o-Scope (Samantho Horvath is doing this at present)