12V 5A Power Supply, Waysse AC DC Adapter, Converter 100-240V to 12 Volt 5 Amp Transformer 5.5x2.1mm Plug for LED Strip Light DVR NVR Security Cameras System CCTV Accessories

I needed a power supply for my mini Frigidaire fridge because the onboard power supply on the unit was making a loud coil whine noise, which I didn't like. Good thing it had another power supply method, which was an external power adapter like this one here. Anyways, I needed a 12V 3.33A adapter, and this 12V 5A adapter works perfectly! It steps down the current to 3.33A, which it does a fine job at. After about a day of use, the adapter does get warm to the touch, but that is completely normal. For some reason, I could not find a direct 12V 3.33A adapter, but I'm glad I found this one. It does the job just as well as the specific current rated adapter for my mini fridge and at a very affordable $10 price. Overall, this power adapter is a good value and will do you just fine, assuming it is compatible with your device.

This power supply works well.

Does the job, used them to light a bunch of led pumpkins we rewired for Halloween.

I use these for my astrophotography setups - I've bought about 6 or 7 of them and one has died after a few months of use. For the price I'm satisfied with that kind of performance especially as the unit had been outdoors during cold damp night and in the sun for several hours on occasion.

Great power supply

I have two of these now, they work very well for astrophotography equipment. I can power my ZWO AM3 and my ZWO ASI 533mm and 533mc pro with these. It feels a little cheap but works great for the priced and doesn’t feel completely different from the original ZWO adapter that’s $30 pretty light, doesn’t get too hot and seems durable enough with the plastic. Lengthwise it is a little bit short which works decently for astrophotography but for other things it might not be the best.

I design industrial electronics and was evaluating this for use in piece of lab equipment. The following discussion is a technical analysis of why this is an unsafe and unreliable product. The TL;DR version is DON'T BUY THIS PRODUCT. It is unreliable and the compliance labels on the back are a COMPLETE LIE. Critical components on the circuit board were left off for the sake of saving a tiny amount of money. Failed after only a few hours of use with a light load (12V @ 500mA). I opened the case top and took the attached photo. I found almost all of the input protection components designed onto the PCB to be missing. The AC comes in on the lower right. There is a missing large rectangular component directly across the mains. I believe this should be an MOV which clamps voltage surges to a safe level. In the shadow of the large capacitor we see a series component RT1, which I believe should be a PTC which limits inrush into the large input cap. Above and to the right there is a capacitor outline which would be the X-capacitor. X capacitors are used to minimize the effects of overvoltage surges, conducted interference, and voltage transients. They are also used to filter EMI from the mains and equipment. This is an important component which was omitted. Finally, in the upper right there is an outline for a CM choke which is jumpered across. This would help filter out the switching noise, and without this and the X-cap, there is simply no way this would pass CE emissions testing. It's no wonder the supply failed. There is only a 2A fuse between the mains and the switching controller, which is a semiconductor device and sensitive to surges and noise, which always exist on mains. Something as innocent as a heater turning off on the same circuit could cause enough inductive surge to kill this supply, which is exactly what happened in my testing. Of course they won't care, but whoever is selling this should be ashamed for leaving these components off. Those safety components are there for very good reasons and should never be omitted.

I have an older Swann wired security camera system. A year ago I replaced the connectors between the DVR and camera wires. My DVR started going in and out, and I found the electric cord was quite hot, so I knew I needed to replace it. It was difficult to find just a replacement plug for the DVR only, but then I found this one. It works perfectly, and has not even felt warm!