Cheap Cicso Power Supply
When searching for a cheap solution to power my JMC Colsed Loop Steppers i stumbled on a thread about using 2nd hand Cisco Switch Power supplies for RC-Charging. As i used old server-supplies for that purpose years ago, i thought i would give it a try. I ordered a Cisco WS-CAC-1300W from ebay for less than 20€ - you can normaly find them ~30€ if you search a bit.
They offer 27A @42V and additionally some amps at 12 and 5V for other stuff - perfect for a CNC Machine. If thats not enough, there is the same form-factor available with 3000W or 6000W - if needed.
The Quality of the power supply is like military grade - heavy as hell and a fan that would be enough to power the vacuum table. If you can live with that, you get a perfect power supply for nearly nothing.
The power supply uses a C19 cable which you can get from everywhere. The back connector is a bit special, but from my box of connectors i found the female 2mm gold-connectos from my rc-planes fittet the high power pins perfectly.
- https://forum.mosfetkiller.de/viewtopic.php?f=2&t=63559 Thread about the power supply and its pinout
- 2mm Goldcontact connectors use the female part. 6€