Re: [photo-3d] Beware! - Converting a Fed Projector to 110v

["Don" <don@xxxxxxxxxxxxxx>]

> Beware! A transformer that steps 110V down to 50V will have
secondary
> winding insulation designed for only 50v. >

> There will - without a doubt - be transformers specifically for
stepping
> 110V up to 220V. This is safest.


I use a transformer on my Fed. Maybe I wasn't verbose enough when I
posted my reply.
He's right. I assumed that anyone who read my post would get a
transformer made to
change 110 to 220. A 50 to 110 xformer is not a 110 to 220 xformer
standing toward the sunset.


Now, even though I worked my way thru college as a techie (worked with
the first transistor
remote controlled video cameras, ultrasonic and electromagnetic
detectors, screwed
to a monstrous huge computer), I was given this student job because I
majored in
Philosophy and it was part of my grant package. I know this list has,
or used to have, a full
compliment of engineers. I truly expected someone who still has a
slide rule jammed in a
drawer under his cuff links to jump in with an Enlightened Post.

As a philosophy major, all I can do is ask you to do is contemplate
the flimsy windings on
that transformer you were planning to use. If you don't have practice
at this, meditate on your
toaster until your mind suddenly clears.

Yes, worded more eloquently, this might have been a koan.



I use a multitap transformer designed for this purpose. It is heavy
and expensive. Works fine.
If you decide to do this, watch the fan. A transformer changes the
voltage, not the frequency.
Your 50 hertz fan may not like 60. The fact that mine works fine is no
guarantee that yours
will. They often used what parts they could get. Our fans are probably
not the same.

As to the dimming circuit. Have you noticed that it can fade to black
between slides?



Don