If I'm applying the formula for converting watts to amps correct, the 175-Watt dual transformer I bought should be putting out 5.8+ amps on each side @15 volts (175W divided by 2 divided by 15) on the output side. Are you saying that if I use the variable voltage post I will raise the amperage as I reduce the voltage?
My knowledge of these things has a thick coat of corrosion and rust from years of non-use. Any enlightenment will be welcome. Gary, where did you buy your buck transformer? That is another term and item about which I am hazy. Bob Nicholson _________________________________________ --- In [email protected], Carey Probst <s-scale@...> wrote: > > I used a 0.5 KVA 6 volt buck boost transformer and a rheostat to control > voltage. > > It will put out 90 amps at 6 volts for large items and with the rheostat > can be throttled down to under a volt for small items to avoid > vaporizing them. I added an inline voltmeter so I could see how much > power I was using after vaporizing a part and getting a lecture from the > guy at S Scale Loco Supply a while back. > > Always start low and add power to avoid my mistake. > > Carey > > Carey Probst > > Member, M.I.T. Educational Council > > S Scale, Sn3 and S High Rail/AF > > A well regulated militia being necessary to the security of a free State, > > the right of the people to keep and bear arms shall not be infringed. > > > On 5/4/2011 8:55 AM, shabbona_rr wrote: > > > > A while back, I built a resistance soldering unit per some information > > I had on the subject. While it worked using a pencil lead with an AF > > 50-Watt transformer, the 50-Watts was not powerful enough to make it > > work with a carbon welding rod. > > > > Over the weekend, I picked up a dual throttle AF 18B 175-Watt > > transformer, which I assume works out to 87.5-Watts for each throttle. > > While it appears to be capable of doing the job, all it really does is > > trip the circuit breaker. > > > > Two questions: > > > > 1. - Can I connect the two sides in parallel for more power and less > > strain on the circuit breakers? > > > > 2. - What else am I doing wrong? > > > > Bob Nicholson ____________________________________________ > > > > > ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/S-Scale/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/S-Scale/join (Yahoo! ID required) <*> To change settings via email: [email protected] [email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
