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New Spectra Physics 168 5W argon ion

Kenom

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Maybe you can explain to us unedumacated folk what 3-phase is.

*resists urge to just google it himself.
 

robjdixon

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I think it is the sort of power that ovens use in the UK - it is like 220v and 60A

Of course, I might be wrong ;D
 
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AC power alternates between positive and negative in regular 50Hz or 60Hz frequency. 3-phase 220v takes that concept and superimposes 3 sine waves on top of each other with a phase difference of 120 degrees. When you measure voltage on an AC line you are getting average or root mean square depending on how you measure it so voltage is actually higher than you measure and lower than you measure. This isn't always good for systems that need lots of power. Superimposing three sine waves keeps the voltage and current at a more constant level.
 
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Hemlock Mike said:
I'm impressed that GG made artificial 3 phase from a dryer plug.  :D   That is a trick and needs big components to do it.
If you have a big 1:1 transformer, you might be able to make a "wild leg" power source.

Mike
We cheated, this "dryer-outlet" is 3-phase with up to 200Amps behind-it @ 208V, (although we were using a 50amp-breaker).
But I have built a couple of phase convertors that would handle this, mostly just need a 3-phase "idler-motor" and some capacitor to make the "extra-leg".
 

Benm

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Somehow stories that involve both 3-phase power, HV and leaking water tubing always leave m feeling a bit worried ;p
 
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Benm said:
Somehow stories that involve both 3-phase power, HV and leaking water tubing always leave m feeling a bit worried ;p
You're not any more worried than these guys, right?  :p :p

 
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ElektroFreak said:
[quote author=Benm link=1235104980/16#21 date=1235562755]Somehow stories that involve both 3-phase power, HV and leaking water tubing always leave m feeling a bit worried ;p
You're not any more worried than these guys, right?  :p :p


[/quote]
That pic is hilarious lol ;D
 




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