Control non ATX power by PS_ON output

strips · 13 Mar 2017, 15:05

Hi,

Any views on using a separate 5V PSU (already powering an RPI) in the BigBox and a relay module to power the main 24V PSU by PS_ON?

Since the relay module wants high on CH1 to trigger I wire it to permanent 5V then wire PS_ON to GND on the module. I have tested this on a breadboard to work.

Link to image: https://drive.google.com/file/d/0B36lBVSvu1cSVWJSTllEeXdSZjA/view?usp=sharing

dc42 · 13 Mar 2017, 15:23

How about a DC-AC SSR with the control terminals connected between +5V and PS_ON? I haven't tried it yet, but I think it should work.

Some relay modules have optically-isolated inputs. Those could also have the input connected between +5V and PS_ON.

strips · 13 Mar 2017, 15:58

I dont have any SSRs laying around. But this relay is opto isolated. Think I'll give it a try and can replace it with an SSR if it does not work.

Flyer007 · 13 Mar 2017, 21:12

I am using this https://www.amazon.com/gp/product/B00E0NTPP4/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

Wired like you have it strips and it works great!