Crappy PSU analysis

Pulling apart a too-cheap-to-be-true PSU. Guess what... it was too cheap.

• Category

  Science & Technology

[11FruitCake11]

let's just very carefully remove this ferrite core haha

[Dan Frederiksen]

then it's time to run screaming away from your computer. think a little

[Mandrake Fernflower]

is it me or does mike sound like Rodger Waters?

[jaywalker512]

Hah, I got the same hub. Won't even power a 2.5 inch external HDD. Oh well, at least the hub functions well enough for flash drives and whatnot.

[kioanakos]

If you look closer, the CE marking that is on the PSU isn't the original "Conformité Européenne".

The letter 'C' is to close to the 'E' which supposedly is the "China Export" marking. More here en,wikipedia,org/wiki/CE_marki­ng#Misuse

[uzaiyaro]

I bought one of those hubs at a local computer store and it came with roughly the same power supply. I think I tugged the output cable or something and shorted, but due to a lack of a fuse, the fucking thing kept going, it popped and started to melt, I didn't know it at the time, so went out while it was melting. If I hadn't have forgotten my wallet and smelled the smoke, that piece of shit would have burned the house down.

I don't go anywhere near any cheap mains object anymore.

[turboslag]

Terrifying!! Shows how much CE approval is abused or, in this case, totally ignored!

Just a thought, it would be useful to see a quality wall wart PSU stripped for comparison. Those with limited knowledge of such things would be amazed!

[spunker88]

A potentiometer is used which allows you to set the resistance and thus the load.

[wiedehopf86]

he is using some sort of power transistor and therefore is able to regulate the current flowing. check wikipedia for what a transistor is.

[iCorx]

I don't understand one thing , how do you choose a load yourself ?

[taylorrc29]

could you do a video on how your dummy load is made 

[Nathan Eyre]

Wow I just bought one of these, I wish I had seen this before I bought it.