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CTHP
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That reminds me....
CTHP   3/6/2014 11:33:54 AM
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Wow! Now I remember...I should have a Bar-B-Que this weekend.

Caleb Kraft
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Re: That reminds me....
Caleb Kraft   3/6/2014 11:34:56 AM
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Haha, cook something up nice and crispy!

Bent.Petterson
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Arcs over Munich
Bent.Petterson   3/7/2014 5:04:55 AM
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If you visit Electronica in Munich, Germany this fall you have a chance to see an impressive high-voltage show at Deutsches Museum nearby: http://www.deutsches-museum.de/en/exhibitions/energy/electric-power/high-voltage/. Highly recommended.

betajet
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Re: Arcs over Munich
betajet   3/7/2014 9:52:08 AM
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I saw that in 1976.  Ausgezeichnet! [outstanding!]  My favorite part is when they lower a thick pane of glass between two electrodes and the lightning wraps around the glass.

Also check out the antique musical instruments, which has a bunch of 19th Century mechanical automata including a player piano with violins.

Etmax
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I Wonder
Etmax   3/8/2014 2:39:26 AM
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I wonder if it's feasible in this day and age to run high voltage DC underground (to offset capacitive losses that would be higher) and then convert to lower voltage AC where it's needed? It would help reduce arc over events due to ice & trees etc. or downed poles due to vehicle accidents. I wonder what the leakage and conversion losses would look like in comparison?

Caleb Kraft
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Re: I Wonder
Caleb Kraft   3/10/2014 9:13:07 AM
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I don't  know, but they certainly can run the AC lines underground to avoid all the wind/ice/tree issues.

Etmax
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Re: I Wonder
Etmax   3/10/2014 10:09:49 PM
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Yes, I live in Oz and all new estates now have underground power (have for 20 years now) but the gut feeling I have is that if the whole city grid was underground that the capacitive load would be horrendous. We often have power outages in summer because when the government privatised the power distribution maintenance and infrastructure planning (forward thinking) died.



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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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