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betajet
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Baghdad Battery
betajet   12/4/2013 6:34:48 PM
Batteries may have existed 1000 or more year before Volta: see Wikipedia's History of the Battery.  If this was the case, it's hard to see why such a useful technology disappeared for so long.  Perhaps it was banned by religious forces claiming it was the work of the devil -- or a scientific threat to religion.  More likely there was a huge patent dispute which completely halted the Progress of Science and useful Arts :-)

Max The Magnificent
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A pile of...
Max The Magnificent   12/4/2013 5:59:16 PM
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Alessandro Volta's battery was called the "Voltaic Pile" -- it was constructed of alternating discs of zinc and copper with pieces of cardboard soaked in brine between the metals.

Max The Magnificent
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Big Ben
Max The Magnificent   12/4/2013 5:57:55 PM
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I just read that Benjamin Franklin first coined the term "battery" in 1748 to describe an array of charged glass plates.

eetcowie
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Re: Voltages?
eetcowie   12/4/2013 5:07:20 PM
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Yes, I did plan on listing the per-cell voltages. Thank you for reminding me.

David Ashton
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Voltages?
David Ashton   12/4/2013 4:20:01 PM
Hi Ivan and welcome

It would be nice if your list had the base voltage of each type, eg 2V for Lead-Acid, 1.2 for NiCd, etc.   Since that has some impact on the choice of a battery, maybe you'll cover that later, though??

Max The Magnificent
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I'm guessing Atomic is out
Max The Magnificent   12/4/2013 3:57:21 PM
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Hi Ivan -- I'm guessing that you've ruled Atomic batteries out as a power source for my robot -- I'm very much looking forward to reading your future columns on this topic

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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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