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 ____________________________________________
>
>
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