So I have a small LED light and a pair of amplified speakers that I only want turned on when my computer is on. I'm thinking that there must be a way to trigger a relay when USB power comes on. I just want to make sure I build it correctly. I would imagine there should be a transformer or something to isolate the Computer side from the mains power side.
Am I crazy?
Is there already a product like this? I haven't been able to find one.
Thanks Guys.
Am I crazy?
Is there already a product like this? I haven't been able to find one.
Thanks Guys.
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