| Electronics > Beginners |
| Linking PC PSUs for a dual rig build. |
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| Crysis1982:
--- Quote from: wraper on April 30, 2018, 10:45:48 am ---If you use 3rd PSU, you still will need to make a custom cables with simple circuit. You said you will use fan/pump controller. It means you should need only very little cabling to power it from both PSUs, the rest should be powered from controller. Just use 2 molex extension cables if there is not enough length, put diodes on 12V rails and connect to power of the fan controller. Connect GND wires together and attach to the fan controller as well. --- End quote --- Not really. I just need to trip the third psu using the 24 pin like they do in mining rigs when using multiple PSUs. But in that configuration the all turn on. This is the cable used in the attached photo. I will just have to use two of them and wire together so the current form either main PSU turns on the third. |
| wraper:
--- Quote from: Crysis1982 on April 30, 2018, 11:01:52 am ---I will just have to use two of them and wire together so the current form either main PSU turns on the third. --- End quote --- It does not work like that. If you do this, all 3 PSUs will always start altogether. |
| wraper:
Again, you could use a simple circuit with 2 diodes to connect adapters together. BUT You will have way way messier wiring, additional PSU and 3rd power cord running into the case. If you forget to plug it, there will be no cooling. So in the end it will be very messy, unreliable and consume more power. And you still need to make a custom cable with simple circuit :palm:. While you could just take 2 molex adapter cables like on the picture and wire them together with 2 diodes. 2 in, one out, connected into the fan controller. |
| Crysis1982:
I could just use a simple switch to isolate each main cable between these PCBs. So just throw the switch when I want to change from my workstation to the gaming rig. I have two of these ordered. It just is a simple 24 pin with a molex. I could isolate the two molex cables to a front of case switch depending on what system is going to be used at that time as I will never be running both systems at once. |
| wraper:
I just don't understand your reasoning. You still need to modify the cables. But you are eager to put additional PSU and cause the mess. No reduction of effort, more money spent and messy result. |
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