Bench Power Supply Variable 0~30V 0~10A 150W Fixed, 3-Digits LED Display Current and Voltage Adjustable Encoder DC Industrial Regulated DC Power Supply 15V 10A/30V 5A,Electroplating DIY etc.

Works good Looks solid

For the price, this is a very useful bench tool. It includes a fan, so it’s a bit noisier than other Ruzizao bench supply models. It lacks an earth socket, a row of numbers which indicate the watts being output, and a USB‑A socket, which the non-switched-mode Ruzizao supplies include. However, this design makes it much easier and safer to adjust the current limit and supply voltage. It can also output up to 10 A at 15 V — more than the other models. The adjustment knobs work through the built-in software, so when you turn them, the supply gradually changes to the requested value, rather than immediately altering the output as the older pot-based supplies do. This also features a power switch on the front, which means it can be turned on and off without having to reach around the back of the device. As you can see this PSU (the top one which is displaying 4.5v) is considerably more compact that the other Ruzizao ones (the 2, one of which is powered, which sit below it). I love Ruzizao bench supplies (which is why, as you can see in the photo, I have 3 of them) and I recommend this one highly.

Perfect for doing electrical work on motorcycle restoration

Great for your CB radio

For the price, it’s quite a nice basic variable power supply unit. It gives up to 30V @ 5Amps OR up to 15V ar 10 Amps. A single rotary knob to adjust the output Voltage and another to adjust the current limit setting. The maximum possible output power setting is 150W total. So if you set the current at 10A and then try to increase the Voltage, it will (quite clever software) not go above 15V. It will only allow any combination of current limit and voltage setting that stays at 150 W or less. You soon get used to that. The displays are large clear and just the right brightness. Output Voltage and current meters are quite accurate. You push the setting knob in to change which digit will be adjusted (flashing digit). The V and A settings are memorised when unit is powered off, which is nice. However, sadly there are a couple of points which let it down (hence my 3 stars instead of 5). One minor point is that there is no output on/off switch. So you cannot check your settings without the output also being enabled. So if you are checking the settings before connection to something, you must physically disconnect an output terminal to prevent possible damage from over voltage to external equipment. But sadly complete disaster for me is the cooling fan noise. It is constantly on at full speed the moment you turn on the unit. The fan noise is horrendously loud and unbearable. I could not even hear my TV in the same room, with this PSU operating nearby me! Such a shame as otherwise the unit is very well made and works well. The description states Automatic Fan, which implies to me variable speed or temperature controlled fan. I think that is probably a poor translation, and actually means fixed speed always on fan (so yes it does automatically come on when ever you power the unit on). If I am to use this unit, I will have to modify this fan to make it significantly quieter yet still maintain adequate cooling for high power use. At very light loads, it does not even need a fan running at all. The unit is quite efficient and only draws around 2.5W from the mains when output is completely unloaded. If you are to use this PSU in an already noisy working environment, the fan noise should not be an issue. Such a pity really. Even though this is an entry level PSU, the fan noise is unacceptable IMHO.

Best bit of kit I ever bought, see for testing 12v bulbs or checking anything 12v before you fit it to the car or trailer and etc just amazing

Cooling fan is constantly on and is noisy due to this I didn’t test any further it was annoying.

good unit does what it says