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Over on the EEVblog forum I ask What’s special about the frequency 14.9254 kHz? The answer seems to be that this is 1/67th of 1 MHz, which is probably as precise as the microcontroller they’re using can go.
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In this video I take a good long hard look at the entirety of this book.
The book is Basic Electronics – Volumes 1 through 6 written by Van Valkenburgh, Nooger and Neville, Inc. and published in 1955.
The book is about the state of electronics at the time it was written. It was commissioned by the United States Navy, who used it to train their technicians. Later, it was released for civilian use.
In the book there is lots of material on vacuum tubes, which were state of the art at the time. The sixth volume adds material on transistors and frequency modulation, which were bleeding edge technology at the time.
I learned heaps from reading this book, particularly about the various types of vacuum tubes (also known as “valves” by the British): diode, triode, tetrode, pentode, and Klystron, among others.
Also I learned that the name “transistor” is a contraction of “transfer resistor”, I didn’t know that!
If you would like to watch this video but don’t have ten hours to spare, you can find out how to increase the playback speed more than 2x on my YouTube hacks page.
The links to archive.org I mention in the video are these:
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