Can anyone help us to understand why we get these random dots that seem to have some correlation between the power and the speed? They are most evident on mirrored acrylic and slate and we are trying to figure out the cause. This is a material test we ran on the mirrored acrylic:
We have seen the lps lase when the signals tell it not to lase… @ednisley has caught this on his scope…
ooh, hey thanks for that, I was searching the incorrect terms. found an old thread Weird dots all over my engraving - #243 by JustAnotherLaserGuy that points to a bad lps. Any ideas if there are any recommendations on replacement lps or any line filtering that can be done?
My sample of three HV power supplies with different labels on the outside shows they are identical inside:
There’s some evidence suggesting the power supplies in (much) higher priced machines are different and behave properly, but those supplies aren’t available from the usual sources.
1 Like
Nice, thanks for your documentation there!
I found it weird that as the speed increased the power the dots showed up at moved. I figured it was power related but wasn’t sure if it was dirty/EMI related or just bad/cheap LPS.
Guess we need to find a new/better LPS or something else.