SEM source coils stripped
Hi,
Just thought this might be of some interest to somebody, it's a photo of four SEM stripped source coils from a stator a guy sent me from Seattle. You can see the thin green lines this is where the enamel has deteriated and the copper wire has oxidised when the moisture gets in, this brings shorted turns(low voltage output) or compete open circuit.
All so you can see how tarnished the copper wire is should be a bright copper colour.
Sparks.