A crafts forum. CraftBanter

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » CraftBanter forum » Craft related newsgroups » Doll Houses
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

Need Transformer Information



 
 
Thread Tools Display Modes
  #1  
Old October 27th 06, 04:41 PM posted to rec.crafts.dollhouses
Dan Wenz
external usenet poster
 
Posts: 3
Default Need Transformer Information

We have a small "haunted" house for which my wife bought a number of
lights (pumpkins, etc.). Unfortunately, they're all the battery operated
3v type (I'd have preferred 12v ones), and I'm going to "transformerize"
them.

Appropriate transformers seem to be rare in my immediate area, with the
ones I see at Radio Shack being relatively low in amperage capability,
less than 1000 ma. There are lots of the lights I need to connect to one
or two transformers if possible, so I'd guess at least 2000 ma or so.
There are a few electronic supply stores a bit further out from my home,
and some online sites I can go to.

That leads so my question - rather than buy DC transformers, I'd rather
use AC, less complicated internally, and, hopefully cheaper. I'm
wondering whether the lights will "notice" they're being fed AC rather
than DC. Anyone comment?
Ads
  #2  
Old October 27th 06, 10:49 PM posted to rec.crafts.dollhouses
Herb
external usenet poster
 
Posts: 13
Default Need Transformer Information

Dan Wenz wrote:
We have a small "haunted" house for which my wife bought a number of
lights (pumpkins, etc.). Unfortunately, they're all the battery operated
3v type (I'd have preferred 12v ones), and I'm going to "transformerize"
them.

Appropriate transformers seem to be rare in my immediate area, with the
ones I see at Radio Shack being relatively low in amperage capability,
less than 1000 ma. There are lots of the lights I need to connect to one
or two transformers if possible, so I'd guess at least 2000 ma or so.
There are a few electronic supply stores a bit further out from my home,
and some online sites I can go to.

That leads so my question - rather than buy DC transformers, I'd rather
use AC, less complicated internally, and, hopefully cheaper. I'm
wondering whether the lights will "notice" they're being fed AC rather
than DC. Anyone comment?


Lights don't much care. As long as there are no heating elements,
electronic circuitry (like what's required for flickering lights or a
flickering fireplace, sequential lights, etc.), or motors. Make sure
that the actual voltage is enough to light the lights and not so much
as to burn them out.

You COULD, instead of finding 3v transformers, wire the lights in
series of 4 bulbs each and feed them standard 12v.

- Herb
  #3  
Old October 28th 06, 02:15 AM posted to rec.crafts.dollhouses
Dan Wenz
external usenet poster
 
Posts: 3
Default Need Transformer Information

Herb wrote:

Lights don't much care. As long as there are no heating elements,
electronic circuitry (like what's required for flickering lights or a
flickering fireplace, sequential lights, etc.), or motors. Make sure
that the actual voltage is enough to light the lights and not so much as
to burn them out.

You COULD, instead of finding 3v transformers, wire the lights in series
of 4 bulbs each and feed them standard 12v.

- Herb


Thanks! I'd thought to possibly go the "series" route, but I wanted to
route all of the 3v wiring to one central location supplied by a 3v AC
source. That would, I assume, drop the voltage far below the 3v I needed
(LOTS of lights). Then I thought of a "cheap" Variac, around $80 new for
around a 10 A output, that would need an isolation transformer to be
safe. THEN, I remembered an old variable, heavy DC Lionel train
transformer long lain in our cellar, and I actually FOUND IT among our
newly unmarried daughter's belongings :-) Seems to be good for 0 to
around 12v and 2.5A output. I need to find out whether it's fused
(internally). I can monitor the output amperage and use another 3v 800
ma DC transformer for additional lighting which I'm sure I'll need.

I asked the wife to, in the future, try to buy 12v lighting if at all
possible, easier to find power supplies for, including use of my 12v DC
power supply I use with my model aircraft battery chargers, if I can
find it among the disorder we call our home :-(
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Renewing the RCTY Information List (2006 Version) MRH Yarn 18 December 9th 05 12:18 PM
No revised Information list! MRH Yarn 4 December 2nd 05 06:46 PM
OT safety information Els van Dam Yarn 26 March 14th 05 02:39 AM
industry information kat Glass 10 February 10th 05 07:59 PM
Your recent report to eBay's Trust and Safety Department . Marissa Vignali Quilting 0 October 27th 03 07:39 PM


All times are GMT +1. The time now is 03:39 AM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright 2004-2019 CraftBanter.
The comments are property of their posters.