Power Supply Build for Router CNC

[Wobblycogs]

I can't believe my last post here was in September and it's November already!

I've been away and done some recalculations based on your advice, before I rush out and buy parts though it'd be great if someone could cast their eye over the spec.



The transformer is still 1000VA but has been dropped down to 24+24 wired in series. That should give me a maximum voltage at the drivers of 73V assuming the mains voltage is at it's upper limit of 253V.

The relay for the bleed capacitors has been ditched in favour of always connected resistors. I've gone for 6k, 1W resistors, one per capacitor. The calculation shows a bleed time of 30 seconds with 0.88W being dissipated per resistor. The capacitors are the same 10mF one's I linked to earlier.

The neon on the primary side of the transformer has gone and I've got a blue LED with the 15k, 0.5W resistor on the secondary side.

What should I attach all the components to? I've got some 4mm aluminium plate, wood, plastic, something else e.g. thick PCB blank.

Thanks