Actual results of adding filtering capacitors to power supply lines of oscilloscope electronic project

Clean, noise free supply voltages are essential when working with electronics and especially when designing analog amplifiers. This video is part of a project to build a digital storage oscilloscope with the electronics kits from the 3rd and 4th month of the Applied Guide to Electrical Engineering. You will be able to see firsthand the effects of noisy power supply lines not just in the supply lines directly but how this noise affects the voltage follower op-amp in the first analog stage of the oscilloscope front-end.

After I made this video, I realized that it shows clearly the effect of these capacitors better than any lesson I could come up with. One of the members of this program recently stated how much better it is to learn electronics through hands-on projects like this. Add to that the ability to take these videos anywhere on an iPod or iPhone device and he is getting tremendous value out of this program. I wanted to share with you this video so you can see for yourself how the design lesson is so much more memorable by being presented in a project setting.

Enjoy this video and I hope you learn from it. There are many more in the full program along with regular shipment of the electronics kits needed to follow along.