On Tuesday, February 18, 2003, at 11:08 PM, Clark Martin wrote: > At 9:14 PM +0000 2/18/2003, Phil Beesley wrote: >> On Tuesday, February 18, 2003, at 08:00 PM, Bill Brown >> <[EMAIL PROTECTED]> wrote: >> There are two "main" types. The first are about the same size as an >> external modem and are designed for use with hair driers, shavers etc >> and most definitely NOT suitable for use with computer equipment. The >> other type provide a properly regulated 110V supply and have a more >> industrial appearance, unsurprisingly as a typical application is for >> use with electronics test equipment or power tools. The transformer I >> use is about the size of an external SCSI case but a lot heavier >> because it is oil cooled. > > <snip> > A basic transformer doesn't provide regulation, that isn't what a > transformer does. The closest thing I can know of is a Sola which > is known as a resonant transformer and provides some regulation. > I think the confusion here is over the word 'regulation', which AFAIK, only applies to DC supplies. Step-down transformers supply AC and as long as the load is not excessively inductive, will always supply at the correct voltage. Current handling is the issue!
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