This just in from my son: Transformer specs: Primary: 110v at 0.5a or 220v at 0.3a Secondary: 24v at 20va(.85a) or12v at 20va(1.7a) He has 220v coming in with a green ground wire but no neutral, and the circuit board is using both 24v and 12v. Gerry -------------------------------------------------
>>> Archer wrote: >>> > Trying to find a 220v transformer with a 24v "center tapped" secondary >>> > since I need 12v as well. >>> > Found plenty of 220v - 24v transformers on the net; Digikey, Grainger, >>> > Nextag, HVAC websites, pool supply co's. etc; but couldn't find any >>> > 220v-24v transformers with a center tap. Have very limited space in >>> > the control box, so I can't use two 110v transformers in series. >>> >>> What kind of load are you powering? If the load is light enough you >>> might be able to make your own transformer to fit. I can't help on >>> actually building it, but it isn't difficult from what I've seen of the >>> EE guys doing it at work. And they make some crazy oddball >>> transformers. >> >> And starting with an existing transformer, particularly one with >> separated >> windings, makes it all the easier. >> How much current do you need? What else is in "the control box"? >> Craig > --------------------------------------------- > I'm 90 miles from my sons house in Orlando, so this is a long distance > operation > so far. I was going to go there tomorrow but am temporarily too sick to > go. > He sent me pictures of the control box and it's pretty obvious that space > for the transformer > is a very limiting factor. The box circuit controls relays for the 220v > circulating pump for the pool. > I'm guessing the circuit would't require more than 2 amps at 24v to power > the relays. Some of > the 2 amp 24v transformers shown on the net are probably small enough to > fit in the control box. > The manufacturer wants a big price for the box and won't sell the > transformer separately. Won't provide a circuit diagram either. > Thanks, > Gerry _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
