Power Supplies - In rush supressors

[Jonathan]

Just out of interest does it matter that the lights dim when you switch it on? My 500VA for the stepper motors does the same, so does the milling machine. Neither have ever tripped the breaker so I don't really see a problem.

[abfa9358]

Does to me. I'd also like to understand how to use supressors.

[Jonathan]

Does to me. I'd also like to understand how to use supressors.

Ok, what type of suppressor? Active or passive, do you have a link to an example?
You can probably calculate it from the inductance of the transformer, since that gives the energy that the transformer 'stores' (E=0.5*L*I^2) and the energy stored in the the capacitors. Then decide how long you're prepared to wait for it to turn on and if it's passive choose one with a suitable resistance for that time constant...