Connect with us

USB Power Supply via a Relay

Reply to Thread

Discussion in 'General Electronics Discussion' started by DustyBottoms, Jun 30, 2019.

Scroll to continue with content
  1. Jun 30, 2019 #1
    DustyBottoms

    DustyBottoms

    1
    0
    Jun 30, 2019
    Hello,

    my question is a simple one, please don't laugh. :)

    I want to power on and off a USB device via a relay. I already programmed it. My question is pretty basic:
    I need to connect the red cable (+5V) to the relay to on and off the device, but do I also need to connect the black cable (ground) to the relay, or can I just connect the ground cables directly?

    Thanks!
     
  2. Jun 30, 2019 #2
    BobK

    BobK

    7,671
    1,681
    Jan 5, 2010
    No, you don’t need to run the black connection through the relay.

    Bob
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Similar Threads

  1. charging via usb

  2. Controlling shift register via USB

  3. PS2 controller to USB via Transceiver?

  4. simple analog to digital via USB

  5. Using sensor output via relay to trigger a solenoid

  6. Switching DC load via AC rated relay ?

  7. Switching mains via USB - can it be this simple.

  8. How to toggle on/off via Power Line?

Loading...
Electronics Point Logo
Continue to site
Quote of the day

“”

-