Gallery, Projects and General > How do I??
Mini Lathe Electrikery.......
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John Swift:


Hi Dave ,


 the armature test is with a AC voltage to check for shorted turns , the transformer action of the armature windings

 make them show up better than with DC 

yes with a variac transformer you will need a step down / isolating transformer as well     

 John
lordedmond:
we used to use a small transformer with the lams cut open normally called a growler from the noise it made when you found the shorted turn,   did not work on the 100 plus hp dc motor I used to rewind though, as the turn was a loop of copper tape 1/2 X 3/32 the other name is not politically correct now a days

otherwise it was drop tested with 2 vdc from a mg set ( we used welder cable to carry the juice )


David D did you get my pm about the amadeal board being the same as yours



Stuart
Stilldrillin:
Gottit Stewart.... Thanks!  :thumbup:

Wish I'd got the vaguest idea what you lot were talking about........  :palm:

David D
Bluechip:
Maybe we shared a common  tutor ???

Mine was Prof. Stanley Unwin ...  :palm:

Dave BC
lordedmond:
As part go my apprenticeship I had to spend a year in the armature/stator winding dept at Stanton and Staveley ltd at its Stanton works so it was big old dc stuff for me  :)   john Swift just triggered a long lost memory from when I was 17  65 now though :)


so not so much as a unwind moment but trade talk


Stuart
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