Frustrating POE injector plug (Patreon)

POE power injector plug with "issues"

So frustrating! Some decent circuitry, but silly penny pinching and corner cutting has turned what could have been a premium product into a liability. Let's start with the case. It's clipped together so solidly with a reinforcement lip that I had to break it to open it. It's solid. Then comes the circuitry, and they started by omitting all the noise filtering, then used a fairly solid control chip with a chunky little transformer. But then they ruined everything by skimping on the class Y safety capacitor and the way the windings were put on the transformer. If they had kept the secondary windings away from the edge this could have been a safe transformer. But by running the secondary winding hard up against the primary winding they have created a possible insulation breakdown risk. In use this plug would probably work. But if the insulation broke down then there is a risk that the devices plugged into it would keep working, but become referenced to the mains supply. In some instances that could result in a shock or equipment damage. I didn't test the stated voltage and current due to the lack of something suitable to act as a 48V load. I'll provide a link to this item, but it is purely for use as a reference in safety education. I don't recommend it for actual use:- https://www.aliexpress.com/item/1005006479735381.html It's a non-affiliate link. I don't want to earn gadget-credit from a dangerous product like this. If you enjoy my videos and would like to support me with a dollar or two for coffee, cookies and gadgets to take apart, you can do so by supporting me on Patreon. I release videos without adverts for critique and feedback on Patreon as soon as they have been made. I also release Patreon-only backstage videos when I'm working on shows. https://www.patreon.com/bigclive Alternatively, for a single coffee contribution you can use PayPal:- https://www.paypal.com/paypalme/bigclive #ElectronicsCreators