Fellow RCMers,
I've been reading a book from the 50's that describes different kinds of electrical motors and how to repair/rebuild them. In one part, it very briefly recommends using a "growler" to test an armature. Unfortunately, the reference was short and pretty obscure, and I was left in the dark as to what the test would even accomplish. Does anyone know the answers to any of these questions?:
1) What does a growler measure? 2) How to you correctly use one? 3) Can you build your own? 4) Has it been replaced by a newer device? I notice that neither HP or Fluke offer one, so I suspect it may be antiquated.This question might be better suited for rec.electronics or something, but I know the metalworking hobby tends to generate piles of broken motors (got a few myself) so I thought I'd check with y'all first.
Thanks! Dave Doerschuk