I'm new to the forums and have a problem I cannot find an answer to.

I am making a lamp with LED strips inside powered by a 12v 2a power supply.

I want to also power a USB cord with this power supply so I can charge my phone at night.

Is there an easy way of going about this so the same power supply can both power the lights and charge my phone?

  • 1
    \$\begingroup\$ Yes, buy a car 12V usb adapter. \$\endgroup\$ – Passerby Aug 24 '18 at 1:18
  • \$\begingroup\$ @Passerby, not "USB adapter", but "USB charger". \$\endgroup\$ – Ale..chenski Aug 24 '18 at 1:51
  • \$\begingroup\$ @Ali not charger, power supply, the adapter doesn't charge the phone has the charger internally. \$\endgroup\$ – Passerby Aug 24 '18 at 2:07

A buck converter is cheap and easy way. There are lots of them on eBay, baggood, amazon, AliExpress any of those sites.

Search for DC to DC converter 12 volt to 5 volt.

  • 1
    \$\begingroup\$ Some even have a USB output connector for the 5V side of things. \$\endgroup\$ – Michael Karas Aug 24 '18 at 3:43

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