At 08:32 PM 1/20/2005 +0000, you wrote:
>Cheers all.
>
>I think I might take the old insert/cut jumpers route. just liked the idea 
>of two fuse holders since you could put covers on them and effectively 
>insulate them from hands.
>
>Thing that confuses me is that I've seen this done in a piece of high spec 
>hi-fi equipment (power amp) just surprised they could afford to 'waste' 
>that much primary coil.
>
>Ed

The difference isn't really that much. You're constrained by available core 
sizes in almost
all situations and you can design the transformer with different gauges of 
wire for each half of the
winding (probably close to the same number of turns) to fill the available 
winding area. It's
often cheaper than stocking 2, 3 or 4 transformers for all the major line 
voltages world-wide.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com




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