The Radio Shack unit called for on the Charles River site works quite well and is very inexpensive. Be sure to use a fan speed control and not a light dimmer. ----- Original Message ----- From: "C. Barker" <[EMAIL PROTECTED]> To: "Ed Berris" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Saturday, April 06, 2002 3:10 PM Subject: Re: [RCSE] Power supply for foam -What do I need?
> I have an outdoor sign transformer rated @ .250 KVA and I could hook it > up at either 12 or 24 volts so if my math is right I could get approx. > 20A @12v or 10A @24v. > Which would be better; 12 or 24 volts? Or is there any difference? > > Thanks, > Chris > > > Ed Berris wrote: > > > > Place a 30 volt, 5 amp transformer or something close, behind the variac. > > If you need one I have some brand new units that fit this description that > > our club uses when building power supplies for hot wire cutting. Cost is > > $20.00 plus UPS. > > Ed > > ----- Original Message ----- > > From: "C. Barker" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Saturday, April 06, 2002 8:43 AM > > Subject: [RCSE] Power supply for foam -What do I need? > > > > > I have a what I would call a variable transformer that varies 110v AC > > > from 1~110v @ 1 amp hooked up to a 24v, 2a transformer. It doesn't seem > > > to heat up the wire enough. What do I need to get a workable power > > > supply? Is the main transformer (110v @ 1amp) enough? Would I neet to > > > find another secondary transformer that can output more amps? > > > Thanks for your input. > > > > > > Chris > > > RCSE-List facilities provided by Model Airplane News. Send "subscribe" > > and "unsubscribe" requests to [EMAIL PROTECTED] > > > > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
