Was about to get a toy- then I did some research...

[Clive S]

This ^^^^^

Mains electricity is very “dirty” in some areas. Stick a scope on the mains and you would be shocked to see how bad it is at times. It’s the reason if it was me I would at least have a voltage regulator in the circuit at the very minimum. Cleans up that dirty power a treat.

What are you on about You can supply a drive with a toroidal, rectifier and some caps ie DC or just use a toroidal and use the rectifier and caps in the drive.

That’s why I’m thinking a decent UPS would at least let you shut down safely. Or is my OCD going overboard again?

I think you are going overboard a bit here and frightening new users into things they just don't need

[NeoMorph]

What are you on about You can supply a drive with a toroidal, rectifier and some caps ie DC or just use a toroidal and use the rectifier and caps in the drive.



I think you are going overboard a bit here and frightening new users into things they just don't need

No no no, I’m asking the question of experienced users. I’ve only got experience of an openbuilds machine at present and haven’t had the pleasure of building a larger CNC so the op’s question and your reply about mains fluctuations made me think about running tests on the local power grid.

I can’t remember the figures from my last test but I do have the kit still.

I still remember the time back in Cannock where I was sitting in offices and suddenly the ceiling fans turned into scary propellers. Turned out the distribution centre had supplied twice the rated frequency for a while... blew a ton of mainframe terminals throughout the building and only the fact that it tripped the generators protected the two mainframes we had downstairs (IBM 370/158 and IBM 3033).

That truly is a worst case scenario but check your local power. Mine is ruddy awful at times, especially around 6pm. My oven is flashing the clock timer at me because we had a brownout yesterday.

But ultimately I don’t know much about mains system and I haven’t touched anything 3 phase or high voltage this millennium... so I’m very much the noob asking questions.