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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.


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.

Gareth Branwyn

Gareth Branwyn is a freelancer writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor for Boing Boing and WINK Books. And he has a new best-of writing collection and “lazy man’s memoir,” called Borg Like Me.


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