My Patreon page: https://www.patreon.com/julian256?ty=h
eBay links for items in this video:
Check out Super Bright 17cm 5W 84 COB LED Lamp Strip Light Bulb 12V White for Home Car Use http://www.ebay.com/itm/-/252176672484
Check out DC Buck Converter DC5~32V to 0~30.0V 5A 30W Adjustable Voltage Regulator/Adapter http://www.ebay.com/itm/-/351628448835

By Julian

Youtuber, shed dweller, solar charge controller aficionado

12 thoughts on “Julian’s postbag #53 – patreon, 12v cob led, buck psu”
  1. Avataaar/Circle Created with python_avatars Kurt De Backer says:

    Thanks for the video, ordered this buck converter directly 🙂 already had 22 from those cob led strips.

  2. Avataaar/Circle Created with python_avatars Raymond J says:

    have you ever heard of wish they have great led things all kindsa lights n cheap AF to

  3. Avataaar/Circle Created with python_avatars Protomaker Black Sprint Original 3D Printer says:

    Where are all the single-ended primary-inductor converter (SEPIC) units? There don't seem to be many about.

  4. Avataaar/Circle Created with python_avatars Coding The System says:

    Can anyone find a link to the DROK buck converter? Can't seem to find it.

  5. Avataaar/Circle Created with python_avatars wizardzx2 says:

    what is the lowest voltage you can usefully run this at?

  6. Avataaar/Circle Created with python_avatars Bill Allen says:

    I use those led cob lights and run them at 11v and they run cool. Granted the output is lower but they will last. I have 8 of them daisy chained ( in parallel ) running on a 12v mains adapter an have used 2 diodes for a 1.2v voltage drop. Seems to work fine and have left them on for days at a time.

  7. Avataaar/Circle Created with python_avatars Dairy Pusher says:

    I bought some strips like that. To try out, I just shortly held the contacts against plugs of a 15V power supply (from a headphone amp), and a 12V power supply (from a DVD player). There seemed to be a lot of flicker, dunno if that came from just holding the contacts to the plugs. Are those kind of power supplies right for these strips, or should I get a different kind of supply which might avoid the flicker?

  8. Avataaar/Circle Created with python_avatars Warlock says:

    How much did that COG draw at 14.4? Just wondering, because they should not exceed something like 250-260mA. But since there is no amp limiter, was thinking of using 10ohm 5W resisotrs in front to limit current in the car use. Thinking of using them to serve as backup light under the doors when they open, and maybe in interior under the seats.

    Cheers…

  9. Avataaar/Circle Created with python_avatars mbaker335 says:

    In a more helpful vein try the following. Play 501 darts against a competitor who keeps track of the scores What you have to do is get to the stage where you do the multiplications/additions and subtractions in your head for BOTH PLAYERS and do not write anything down. The game can then become your competitor asks in the middle of the game what the scores are. You should (and in practice will) be able to state immediately what figure both of you are on and be spot on every time.

  10. Avataaar/Circle Created with python_avatars mbaker335 says:

    You used a calculator for (12 * 1/4) Really? WOW.

  11. Avataaar/Circle Created with python_avatars MusicalBox says:

    Hi Julian. I was wondering if after about 8 months you still like the buck converter and if you recommend it.
    If you made a review video about it, I didn't find it. Thanks

  12. Avataaar/Circle Created with python_avatars babagary quek says:

    hi..was it possible to cut COB ice bar side light for my electric scooter,,,not R&B strip……and will it still work??

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