[youtube=”http://www.youtube.com/watch?v=vBsSASge7ls”]
In this video, Jeri Ellsworth thinks back to her childhood, to oscillator circuits she used to see using incandescent lightbulbs, and explores the utility of such a seemingly lame design. You may be surprised by the results. The circuit she builds and tests is called a Wien bridge oscillator.

[youtube=”http://youtu.be/y1w6Nskbx8E”]
Here, Jeri describes and then examines static vs. dynamic flip-flop circuits. A flip-flop is a circuit that can store state information and is part of the foundation of digital electronics.