April 2013
Intermediate to advanced
160 pages
6h 34m
English
Content preview from Make: Technology on Your Time Volume 34
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Hand-Crank Geiger Counter
Charge a high voltage tube using a simple mechanical oscillator.
I like mechanical systems. Even when it's not the most efficient solution, a machine with moving parts has flair that electronics often lack.
Gregory Hayes
HOW THE ELECTRONICS WORK
» The circuit applies 18V (from two 9V batteries wired in series) to the primary windings of the step-up transformer through the saw switch.
» The on-off cycling of power to the transformer creates inductive high voltage in the secondary winding, which passes ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.