[sdiy] AC transfo pinout

[Simon Brouwer]

Tom Adam schreef:
> Hi, 
>
> I got an AC transfo but I don't know the pinout. How can I safely check
> this?
> It's one of these; (OK, only 4 pins on this one)
> http://www.werco.nl/dbimages/t-1079630310-pi2.JPG
> 220V - 15V
> I know I could put 2V AC on one side and look on the other, but I don't have
> a 2VAC handy
> I'm just not to comfortable with these things so I thought I'd ask.
> Hate to fry myself.
>   
If you already know it's a 220 - 15V transformer, simply measure the DC 
resistance between the pins. The lower voltage winding will have fewer 
turns and thicker wire, and so it has *much* lower DC resistance.

-- 
Vriendelijke groet, 
Simon Brouwer. 

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