I looked at the wiring diagram you posted earlier, it looks like a basic rectifier judging from the component layout. The filter capacitor is only 820 uF, which is pretty small, and falls in line with my earlier statement that 3 phase is easier to filter.chessie wrote: ↑Sat Apr 17, 2021 12:13 am
this is what was confusing me as well , DC is Dc , if it needs to be clean then that's the issue, as marc said i need the sd3 to be able to keep the control so i have no option than to give it a go .
i will now see what is available to buy or get built to produce a clean around 300v dc supply from 240v 50hz .
the question is in order to supply the sd3 ,with the servos already pictured ,how much power do i need to be aiming for ?
ideal voltage /current
thanks for all your help
Look at fuse F6 to give you an idea of the max output current.
I would use a basic bridge rectifier circuit with a NTC thermistor in series with the filter capacitor. 1000v PIV, 50A bridge rectifiers are very reasonably priced. You will need 450V capacitor(s). I would probably shoot for 15,000 uF. The 450V units get expensive, but you can parallel a couple if need be- I would just stick to the same brand and series if paralleling.
Just be real careful when messing around with rectifying line voltage. Also, the capacitors can store a very large amount of energy for days, make sure to add bleeder resistors across them.
You can mount the rectifier on a metal panel or other heat sink and wire everything to a terminal strip.