June 2024
Intermediate to advanced
280 pages
11h 5m
English
Content preview from Make: Radio
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37Experiment 2: A Real Radio
meter won’t respond to such a high-frequency voltage, even when you set it
to measure AC. Still, the LED tells you all you need to know.
TRANSFORMER MATH
Whichever coil you attach to the output of IC2 is the primary coil in this
experiment, and whichever coil drives the LED is the secondary coil. We will
use some abbreviations to write a formula that you may want to refer to
later:
• TP: turns of wire in the primary
• TS: turns of wire in the secondary
• VP: voltage applied to the primary
• VS: voltage measured in the secondary
And now, the formula:
TP / TS = VP / VS
In other words, if the number of turns in the primary r ...
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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.