12vdc to 4.5vdc

• 12vdc to 4.5vdc
  Posted by rvprepperwayne on 28 Sep, 2015 06:12
• First time poster here but a long time watcher to the YT channel. I have a light that runs off of 6 AAA batteries but it runs off of 3 and the other 3 are in series. Here is a link to the light- http://www.harborfreight.com/household/lighting/four-head-led-under-cabinet-light-96794.html I would like to wire them into my RV 12v system but I need a way to drop the voltage down to 4.5 or 5v MAX. I scrap electronics for gold recovery and I keep all the parts that Is on a board in case I ever need something or want to tinker. I'm not electronics savvy by no means but I can fix some things that don't need major work. How and what can I use to drop the voltage down? I'm sure the draw is less that 1A. Thanks Wayne
• #1 Reply
  Posted by Psi on 28 Sep, 2015 06:19
• Get one of those cheap stepdown DC/DC modules from eBay.
  They are like $3 and have a pot to adjust the output voltage
  
  They are switchmode which is good. You want to avoid the opposite which is a linear regulator because it will get hot.
  
  http://www.ebay.com/itm/2pcs-DC-DC-3A-Buck-Converter-Adjustable-Step-Down-Power-Supply-Module-LM2596S-/200964337125?hash=item2eca686de5
• #2 Reply
  Posted by rvprepperwayne on 28 Sep, 2015 06:35
• something like this one? http://www.ebay.com/itm/DC-DC-LM2596-Step-Down-Adjustable-Converter-Power-Supply-Module-1-3V-35V-LE-/251980864576?hash=item3aab3adc40 or would this one be better- http://www.ebay.com/itm/5A-XL4015-DC-DC-Step-Down-Adjustable-Power-Supply-Module-LED-Lithium-Charger-/221888411623?hash=item33a99477e7
• #3 Reply
  Posted by rvprepperwayne on 28 Sep, 2015 13:12
• Ok I didnt see your link in the post. I did order one. Thank You for the input. Wayne
• #4 Reply
  Posted by nbritton on 28 Sep, 2015 16:42
• http://www.amazon.com/s/ref=nb_sb_noss?field-keywords=buck+constant