![]() ![]() ![]() Of course be very careful when modifying several hundred watt power supply wiring and test everything on the bench before plugging in your devices and components. Otherwise if you connect two earth grounded supplies, there is a decent possibility of sparks. Do you need to power a project with 12V and 5V from one wall adapter The ATX power connector breaks out the standard 4-pin computer peripheral port for your. The largest of the Molex connectors on a computer power supply is known as the ATX connector. Probably also important to use an ungrounded plug for the small supply since I bet the main PSU is already grounded(earth ground). The Molex connector has a lifespan of about 5 years only. Molex provides reliable performance in a limited space, making connectors such as Mini50 and Nano-Fit ideal for applications requiring reduced weight, space and. Just take an extra connector, cut the 12V wire and feed it from the new supply connect ground(0V) to your PSU ground(0V) so the PWM and fan speed signals won't get confused. Pinouts for ATX computer power supply: 20 and 24-pin main connectors, 12V, SATA, PCI, floppy drive and other. The important thing is then to connect ground but create a separate 12V rail just for the pump and lights and not let that reverse feed your main PSU. An ATX power supply does not connect to the front panel switch as the old. I see, that the pump goes to 24 watt, depending on your LED setup you might get away with using something like a 50W 12Vdc regulated supply. Figure 4.23 Y Molex connector The power from a wall outlet is high-voltage AC. That would be for you to experiment with. It may go full power turbo on you or go off entirely. I'm not sure what the behavior of your pump is when there's no PWM signal on the fan header while the computer is powered off. Have you considered using a small dedicated 12V supply to power the pump and lights? It is because I want to keep my liquid cooling loop, as well as some LED lights, on as a showcase, even after my PC shutdown. Please give me some directions to proceed. If PSU with such feature does not exist, i would consider altering current PSU to my requirement.I would prefer buying a good PSU with this feature.I wish to get a modern ATX PSU (which means power will be off after PC shutdown), only with one / some molex connectors always-on (power stays on after the PC shutdown). I also know that to bridge the Green and Black wires will start up a PSU.īut i want none of above.I know (old) AT PSU will leave its connectors with power on even after the PC shutdown. These cable assemblies are typically used to deliver +5V and +12V DC to various components in the computer such as optical drives, hard drives, and fans.I know (current) ATX PSU will turn off its power after the PC shutdown. ![]()
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