[TheForge] Re: Flux, was rust & pickling

[theforge@mailman.qth.net]

The voltages depend on the manufacturer as far as I know. All that I 
have pulled have multiple taps for the magnetron and other circuits.  
Most times when a moicrowave failes it is the door switch, the start 
button or the timer circuit.  As for the xformers,  I pull them to use 
the laminated cores.   I have built a couple of heavier duty on board 
battery chargers in the past with them, by winding my own, using the 
core.   They generally use E type laminations with the top welded on.  
The welds are not hard to remove.   I have a larger Miller spot welder 
and an old Omark stud welder, but one of my future projects is to make 
one of the small plug welders used in bodyworking these days.  They seem 
a lot more pleasant to use than the old drill screw weld method of dent 
removal, I am just not ready to shell out a few hiundred dollars on one, 
thus building my own looks attractive.  Looking at the parts diagram for 
them, they are very simple in construction.  As far as other projects,  
they would make a good basis for any self designed power supply, such as 
chargers.  I was also thinking about using one to build a power supply 
for plating or rust removal.   I have since found a surplus antique  
motor generator that produces very smooth DC, so no need anymore.    
Here is a link to a guy that built an arc welder from ganged microwave 
oven transformers:

 http://www.dansworkshop.com/index_Homebuilt%20arc%20welder.shtml

and here is another link to a guy that built a home made mig welder, 
though he started with a battery charger xformer, it could be done with 
the microwave xformers as well.  

http://home8.inet.tele.dk/jan_p/welder/mig1.htm

Sometimes its not about saving money, or even saving the planet, its 
just that "hell if I can't" attitude"

Charles

Ed F wrote:

>What do you do with the transformers?  What voltage do they give you?  (I
>love to scrounge).
>
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