POWSEED 45W AC Multi Voltage 5V 6V 7.5V 9V 12V 13.5V 15V Power Adapter Supply Switching DC Tips Selectable Freely for Household Electronics LED Light Wireless Router DVD CCTV Power Bank BT Speaker

I bought the powseed to power an old Axis CCTV camera which needed a 9V, 1A power supply. I am pleased to say that the camera works correctly with it.I also tried the powseed with my Pure DAB radio which has a 12V, 2A (max) requirement. The radio worked perfectly on DAB and there was no background noise or hum.However, when I switched the radio to FM, there was definitely some interference (not hum just white noise) caused by the supply. To see if this could be reduced I clipped a ferrite core (also available on Amazon) onto the powseed's DC output cable. It reduced the interference significantly although not completely. This may have been because the only ferrite cores I had available were designed for a wider cable than the one on the powseed. A better fit might dampen the interference more effectively.I also used my multi-meter to measure the open circuit voltages from the supply on each of its settings as follows:5v measured 5.3v6v measured 6.3v7.5v measured 7.52v9v measured 9.26v12v measured 12.42v13.5v measured 13.73v15v measured 15.29vI would expect the open circuit voltages to be slightly higher than when the supply is under load so these all seem reasonably accurate. For comparison, I measured the output of my genuine Apple charger without the iPad connected and it measured 5.1V.So, the worst figure I measured on the powseed (5.3v) is 6% over the stated voltage but should be within the tolerance of most if not all electronic devices. However, as there a plenty of cheaper 5V chargers around, this power supply is really intended for devices that needa higher voltage (like a radio or an Amazon Echo).Like other reviewers, I was disappointed by the non-reversible nature of the connectors which means you can only use this supply with devices that have a Centre Positive socket (although this does seem to be becoming a standard).It seems to me that it would have been very easy to design the connectors so that they were reversible to allow the supply to be used with 'Centre Negative' sockets. The only reason I think of is that it was a deliberate decision to prevent accidentally reversing the polarity and damaging the equipment to which the supply is connected.It comes with a good selection of barrel connector tips and a micro USB tip but no mini USB tip.Overall, the supply seems well priced with fairly accurate voltage outputs. Provided you are powering a device with a centre positive socket and not using it with an FM radio then it works very well. The interference on analog radio and the non-reversible polarity was the reason for the 4 star rating rather than 5.If I encounter any problems I will update this review.

Depending on what it is you are driving you may need constant voltage or current. In this case the power supply is constant voltage i.e. you will get say 5V up to a maximum of 7.2A or in other words, 36W. In my application I was using it for LED strips which this works wonders for since I need a constant 5V but because of the length variation or if I wanted to add more, I'd need more current to power them. Now I can't verify that you get a steady voltage as I do not have the means so please read the other reviewers comments on that. I for one have not had an issue as what you have to bear in mind is that every component you use with have tolerance of voltages it can receive (I believe typically 5 percent but always do your research).I had around 2 meters of LEDS at 5v and this powers them perfectly. So far I've had no issues with the power supply and the only thing I could say against it is that there was what sounded like some small coil whine when under load but it was so quite that as soon as I moved the brick behind my desk I couldn't hear it.I'd definitely recommend it. If like me you are powering LED strips it works great. I bought a micro usb plug to wire to for my enclosure and this works seamlessly with it.

The unit has various voltages that are not entirely stable with a varying current draw.I am using mine to power low power radio transmitter/receiver units, On a unit drawing 500ma on receive & 1.5amp on transmit voltage varies from 12.6v down to 11.7 on 12v setting, on a unit drawing 40ma receive & 900ma on transmit voltage varies from 9.7v to 9.2v on 9v setting.They are stable on constant current draw at whatever the adaptor decides to give you.If you are going to use one of these to power a qrp radio then i can honestly say mine is electrically quiet.

The range of voltages available make this power supply useful for many more things than just laptops. It works well either as a charger or as a power supply to run a product from, the current rating is reasonable on all voltages at well over 2 amps.There is a good selection of connectors supplied including micro usb, 3.5mm jack plug and several power plugs ranging from very small to large.The only minor point is that the way the connectors attach to the lead, they can only be used to offer a +ve centre. This is fine for nearly all modern equipment but many older Sony gadgets required a -ve centre pin. You can work around this if you have any two pronged plugs from other adapters that are not shielded with plastic, just ensure you make a mark on the socket of the flying lead so you know which way your +ve and -ve centre pins will be!

Very versatile with selectable voltages of 5, 6, 7.5, 9, 12, 13.5 and 15 and a good range of plugs to fit many items of equipment - even included a mini USB plug. Mine came complete with a UK 3 pin lead to connect to the two pin input of the unit. Some of the Amazon details suggested this was a 36 watt unit rather then the 45 watt advertised - I tested it and it can definitely deliver the full 45 watts. I ran it close to full load at various voltages and it performed well, only slightly warm to the touch after an extended run. I liked the unit so much that I have bought two more to have in hand for future needs!

This is more or less the same as the "ZOZO™ 36W 5V-15V 6-Way 2400mA AC to DC Universal Charger Multi-voltage UK mains Plug AC Power Adapter Supply" that I bought st half the price in 2015. I'm using both to drive TBS5922SE satellite tuners. Those tuners are vague about input voltage and it doesn't follow that they will run cooler with low voltage because they're driving LNB. Thus the adjustable voltage is handy.Both PSUs are running cold and without any whistling noises, they're efficient because the tuners are quite warm, you could keep your hand on them, but only just.

Ordered to replace a 15v charger used with a 12v battery car starter that I lost, and draws 0.5a @ 15v so this is well within spec, barely gets warm after charging overnight.