We love Jeri Ellsworth’s electronics videos and have missed them of late (as she’s made the move from Oregon to Washington to work at Valve Software). She’s baaaaack! And with a cool, simple circuit for building a 1-bit analog-to-digital converter (ADC) using a single flipflop IC (such as a 74LS*) to do the sampling. If you’re still with me, you shouldn’t have any trouble understanding this tricky little circuit and why it’s cool.

More:
And the Winner of the 2012 Makey…

BY Gareth Branwyn

Gareth Branwyn is a freelancer writer and the former Editorial Director of Maker Media. He is the author or editor of a dozen books on technology, DIY, and geek culture, including the first book about the web (Mosaic Quick Tour) and the Absolute Beginner's Guide to Building Robots. He is currently working on a best-of collection of his writing, called Borg Like Me.

2 Responses to Jeri’s Short Circuit: A One-Bit ADC

  1. Ken Corkum on said:

    Where is the video ??????

  2. This is not PWM. It is Delta-Sigma Modulation (http://en.wikipedia.org/wiki/Delta-sigma_modulation).

    Classical reference: Gabor Temes and James Candy “Oversampling Delta-Sigma Data Converters: Theory, Design, And Simulation”, ISBN 0879422858

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