I'm about to start putting together my controller box in a 2u 19" rack mount.
After stripping the old computer out of the box (dual Intel P3 450mhz with integrated scsi/video. Anyone interested for cheap?) I had a thought about power supplies. I already am leaving the 300watt supply the computer was using installed in the rack and had thought to purchase a 48v power supply with aprox 12 to 14amp capacity (4 steppers at 3amp each). After looking on ebay however, 2 7.3amp 48volt power supplies can be had for really cheap. I can either wire them in parallel or take apart the gecko G540 and wire 2 stepper drivers to each power supply. I am thinking the parallel wire method might be the best option thereby not voiding the warranty. Any thoughts on this? or should I just byte the bullet and purchase a power supply with sufficient capacity? 2 48v power supplies for around 30 each plus 25 for shipping compared to around $140 and I don't know if it'll fit in the case. A normal computer power supply just squeaks in.