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Hey everyone,
I recently stumbled upon a couple of older 450-Watt Storagework power supplies from a decommissioned server rack. They are built like absolute tanks compared to modern consumer-grade units, and the internal component quality is honestly impressive for their age. I’m considering converting one into a dedicated bench power supply for some of my more power-hungry electronics projects, but I’ve run into a bit of a wall regarding the control logic.
One specific point I’m struggling with is the proprietary interface connector these units use. Unlike a standard ATX power supply where the PS-ON and ground pins are fairly universal, these storage modules seem to have a much more complex handshake protocol or specific resistance requirements to actually "wake up" the main rails. I've spent the last couple of evenings with a multimeter trying to map out the standby rail and the trigger pins, but I’m hesitant to start jumping pins without a clearer understanding of the sense lines.
In my experience, these enterprise-grade units are incredibly efficient, but they are often designed to prioritize a massive 12V output for drive arrays while being relatively "stingy" with the 5V and 3.3V rails. I’m wondering if anyone here has successfully bypassed the logic on these 450-Watt modules or if I should be concerned about high ripple on the 12V line when it’s not under a significant load. I’d hate to fry a sensitive project because I underestimated the switching noise or the lack of a minimum load requirement for stability.
Has anyone here had much luck repurposing these specific types of "sled" power supplies, or is it generally safer to stick with a standard lab unit despite the lower current capacity?
I recently stumbled upon a couple of older 450-Watt Storagework power supplies from a decommissioned server rack. They are built like absolute tanks compared to modern consumer-grade units, and the internal component quality is honestly impressive for their age. I’m considering converting one into a dedicated bench power supply for some of my more power-hungry electronics projects, but I’ve run into a bit of a wall regarding the control logic.
One specific point I’m struggling with is the proprietary interface connector these units use. Unlike a standard ATX power supply where the PS-ON and ground pins are fairly universal, these storage modules seem to have a much more complex handshake protocol or specific resistance requirements to actually "wake up" the main rails. I've spent the last couple of evenings with a multimeter trying to map out the standby rail and the trigger pins, but I’m hesitant to start jumping pins without a clearer understanding of the sense lines.
In my experience, these enterprise-grade units are incredibly efficient, but they are often designed to prioritize a massive 12V output for drive arrays while being relatively "stingy" with the 5V and 3.3V rails. I’m wondering if anyone here has successfully bypassed the logic on these 450-Watt modules or if I should be concerned about high ripple on the 12V line when it’s not under a significant load. I’d hate to fry a sensitive project because I underestimated the switching noise or the lack of a minimum load requirement for stability.
Has anyone here had much luck repurposing these specific types of "sled" power supplies, or is it generally safer to stick with a standard lab unit despite the lower current capacity?
