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LONGWEI K3010D White Series is an DC regulated bench power supply.The maximum output voltage is up to 30V and the current is up to 10A. White frosted metal body and more compact size, looks more cool and dirt resistant.And at the same time,we still see quality reliability as the top priority for DC regulated power supply. The series is equiped with a better materials and upgraded structure which makes it higher reliable and accurate, lower ripple and noise.The new circuit design also makes it perform better in over-voltage, over-current, over power, over heat and protection.Its reliability and versatility make it an indispensable and valuable tool for testing, research projects, etc, and the ideal choice for laboratories, research institutes, and R&D organizations.
In the Box
- 1 x DC Power Supply
- 1 x Output Power Cord
- 1 x Input Power Cord
- 1 x Test probes
- 1 x User Manual
Lightweight, Compact and Portable
- Weight: 3 lb (1.4kg)
- Size: 8.6 x 2.7 x 6.3 inch
- The front area is as small as the cell phone
This power supply is light and compact enough to save a lot of space for you.
The large 4 LED digital display provides more accurate voltage and current readings. Even in the low-light conditions, you also can easily and accurately read value.
Easy to Operate
Knob with two functions of coarse and fine adjustment, you can adjust the voltage and current data bit by bit, which allows you to set the desired output resolution quickly and easily in 30V 10A.
White frosted metal body and more compact size, looks more cool and dirt resistant.
Multiple protection
The safety of our customers is our most important thing!
K3010DDC power supply can provide a variety of protection, because
•Constant current protection
•Over temperature protection
• Overvoltage protection
•Current limit protection
Intelligent Cooling Fan
Cooling fan will intelligently turn on when the working temperature is more than 122℉/50℃, giving the device longer service life
Compared with other competitors, Safety is our priority.We provide a high quality set of jumper or tester lines. Please refer to the main figure for detailed parameters. These are good sturdy leads with nice rubber insulation cover and the alligator clips made of copper.The clips had insulators to reduce the possibility of accidental shorting. Good quality leads that work great for moderate to low current testing. These wire are good for up to 15 amps maximum. They are fine for basic electrical testing for things like automotive accessories, as long as whatever you are testing uses a fuse of 15 amps or smaller.
Beverly99
Reviewed in the United States on January 26, 2025
I bought this for powering a custom LED lamp. After a few months, the voltage setting potentiometer (control) got super noisy, so that the output voltage would jump by over 10 volts when turning. This could have been prevented in the circuit with a 5 cent part (a capacitor). Also by using a decent control -- good ones do not disintegrate after just a few months. It ended up killing one of my LED lamps due to over voltage transients. I'm also a radio amateur, and finally tracked down the terrible noise I'd been experiencing to this unit, throwing out RF trash at about 39 kHz increments all over the spectrum. This shows that it has NO MAINS FILTERING at all! The required 75 cent circuit has been stripped out to reduce cost. So, it's not even class B rated. There is no way that this unit can pass any FCC tests for use in the US. If you have this on, don't expect your radios to work well, even your broadcast AM radios, because your entire area will be blanketed with noisy RF radiation. Also watch out if you use Bluetooth for anything. Or any remote devices. Even hearing aids. This kind of junk should NOT be for sale in the US, and Amazon is probably the only way it can get out. If you run one of these, it's possible your neighbor ham (radio amateur) will come and knock at your door, so keep in mind that hams are a FCC federally licensed radio service, and it is YOUR legal responsibility not to cause undue interference. Your neighbor ham will probably be friendly and offer to "fix" the defective power supply once they know you are using it, though a more practical offer might be to just give you a better replacement. Hams are not unreasonable, they just want to clean up the RF spectrum. But don't be a RF trash producer! Stay away from stripped down junk like this.
Firefighter Dave
Reviewed in the United States on January 24, 2025
Excellent for my hobby of finding old rusty tools and bringing them back to life.
Kleetus
Reviewed in the United States on May 17, 2024
Seems to work fine, fan kicks on and off as needed and the unit has stayed cool during use so far. My only complaint and it's minor is that the adjustments could really use a fine and a coarse control... When you're dialing in say the current you can go from nothing nothing nothing CURRENT real quick then it's back off and sneak up on it again. Not the end of the world, but it would be nice to dial it back a bit in terms of sensitivity.Still for the price for a 300W power supply? It's more of a critique than a complaint. I'm definitely satisfied with it!
gio
Reviewed in the United States on September 21, 2023
I am using it more than 2 years, for battery charging, li-ion and lead acid, works without any problem, I am leaving it on for days, no problem, I don't know how accurate it is but, really like it. also I changed reverse polarity diode twice, connected 100ah lead acid reversed and just diode died, changed it 4 month ago and work great again. Highly recommended. also it has 220v-110v switch, I live in Europe so I was searching for 220v power supply, I think best in price and also in this power supply category. :)
Patrick T. McGuire
Reviewed in the United States on November 8, 2023
I bought this for a copper plating project. I was impressed with the quality of the item, especially the wire leads that fit into it. Operation was so simple that even a retired beancounter such as myself could operate it.
The Parkers
Reviewed in the United States on January 19, 2023
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Customer
Reviewed in the United States on May 28, 2020
This is a very fine product for the money. I did a little test to verify output with my Fluke multimeter, and it was accurate as far as I could tell. The build quality seems solid, and I was surprised that they offered it with alligator clips in addition to the probes, so that was a nice selling point. I am a hobbyist, so I don't know if this would stand up to the rigor of a national laboratory, but if you're running a lab, you probably aren't shopping on Amazon for lab gear, are you? :-)
Repro63
Reviewed in the United States on October 19, 2020
I needed a bench power supply badly, and looked for a long time before buying this one. As a matter of fact, I bought an other one and returned it due to low quality, and its inability to perform as described. This one does a much better job, however, it does fail to deliver full 30V at 10A. I get 30V at a little over 8A.I liked the idea of the coarse and fine control knobs to let me dial in exactly the power and current I need. The fine dial however is very touchy and is almost as sensitive as the coarse dial. I like the small form factor as it is compact and needs little space on my workbench. The display is large and very easy to read.This power supply is complete and comes with everything you need to get started right out of the box. The fans work under heavy load, and are not too loud. It has worked reliably so far and it does its job well. I am happy with it and recommend it. I give it 4 stars.
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