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Old 27th February 2014, 10:12 AM   #1
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Join Date: Nov 2009
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Default FS: Various Transformers FREE

I have many 100 V transformer, giving away to anybody who want them.

I may be able to ship from Austria or Japan.

I have also heavier staff if somebody is interested I'll post pictures.

Davide
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Old 27th February 2014, 10:29 AM   #2
AndrewT is offline AndrewT  Scotland
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the tr10 would make a nice adjustable 100V autoformer.
It could be tapped at 100V +5V, or +7V, or +10V, or -5V, or -7V, or -10V.
giving 90, 93, 95, 100, 105, 107, 110Vac @ the current rating of the secondary.
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Old 27th February 2014, 10:32 AM   #3
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Old 27th February 2014, 10:35 AM   #4
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Andrew, Do you think it is possible to connect two primaries of two different transformers in series ? Like this I may be able to use for 230 V (more or less)
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Old 27th February 2014, 10:47 AM   #5
AndrewT is offline AndrewT  Scotland
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Yes, BUT !!!!
The load on each primary MUST be the same AT THE SAME TIME.

If the secondaries were delivering current on different phases they would load their primaries on effectively the different half phases and thus the primaries would not be loaded AT THE SAME TIME.
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