I added this item to an order because it appeared to be a 5V PSU in the standard housing used for many 3W LED drivers. I was wondering if it was going to be based on similar circuitry fudged for a 5V supply.
It turns out to be a full-on switchmode with opto-isolator feedback to a genuine SMPSU control chip. A THX208.
I would not classify this PSU as being suitable for powering stuff that was being handles, but for a 5V supply within equipment it seems acceptable. The clearance on the PCB is around 3mm.
The ebay listing I bought this item from was:- http://www.ebay.co.uk/itm/271950038613

11 thoughts on “Inside a dinky little 5v 600ma psu.”
  1. Avataaar/Circle Created with python_avatars Doug Morris says:

    Similar to your “Quicktest,” is the “Keynector.” I have had the “Keynector” for many years.
    I used mine for testing mains powered equipment/devices for testing during construction/modification or repairs where these equipment/devices were an internal part of a machine and connected to power by the internal wiring.

  2. Avataaar/Circle Created with python_avatars Kenneth Madsen says:

    I use one of these to power an ESP-based IR blaster. Glad to see it's actually decent inside

  3. Avataaar/Circle Created with python_avatars Roy Tellason says:

    The link for the ebay listing actually worked this time, as opposed to getting a "not found" page which has been the case with some earlier items. Switching from the UK site to the US one gave me the price in $, and the unit pictured does not look like the one you show, no box and no wires, but those are apparently still out there and readily available.

  4. Avataaar/Circle Created with python_avatars Andreas Delleske says:

    MTBF 2 years.. hm. Not in my backyard 🙂

  5. Avataaar/Circle Created with python_avatars Felenov says:

    Very cute little device, I actually like it

  6. Avataaar/Circle Created with python_avatars Candis Brendel says:

    5.O (0) ZERO NOT O DRIVES ME TO DRINK WHEN PEOPLE SAY THAT!! ROLLING AROUND THE HOUSE NO TRYIN TO FIND SOMETHING TO DRINK!!! JUST SAYING OLD ONE LEGGED JOSEPH T RETIRED NAVY

  7. Avataaar/Circle Created with python_avatars Skye M says:

    I wish I could get a quick test in the US. It would be much more practical than my salvaged AC power cord and knockoff Wago terminals. (And safer if I forget to unplug it.)

  8. Avataaar/Circle Created with python_avatars Steinar Simensen says:

    I had a 5v module exactly like this one connected with no load. After 30 minuets it caught fire. Wouldn’t recommend it.

  9. Avataaar/Circle Created with python_avatars Michael says:

    Do you use the things you take apart in the videos on a normal basis, because you pay quite a lot for things every video and it would not be very 'Pocket Friendly' if you just chuck it away!

    Kind Regards!

  10. Avataaar/Circle Created with python_avatars Dum Dum says:

    i wonder if it can power my computer… Hmmmmmm…..

  11. Avataaar/Circle Created with python_avatars Nine Signs says:

    using a 6W 12v version of these driving 2X 3W LED strips, quite impressed with it. Nice and tiny.

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