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LONGWEI

DC Power Supply Variable,0-30 V / 0-10 A LW-K3010D Adjustable Switching Regulated Power Supply Digital,with Alligator Leads US Power Cord Used for Spectrophotometer and lab Equipment Repair

    • Based on 988 reviews
Condition: New
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Availability: 15 left in stock
Fulfilled by Amazon
Arrives Wednesday, May 22
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Color: Silver


Features

  • High Precision, Wide RangeLONGWEI DC power supply is a professional power supply regulation device that designed with crystal clear, backlit 3-digit LED display of voltage, current, and power. Precise accuracy: 00.1V and 0.01A. You can easily tune it within 0-30V and 0-10A. Very durable and easy to observe even in low light conditions.
  • High Quality with Essential SafetySafety is our priority. Grounding wire, The power supply takes the function of limited flow protection, overpower protection, over temperature protection, voltage overload protection. greatly improving its working efficiency and lifespan!
  • Excellent Heat DissipationEquipped with a big fan controlled by intelligent temperature control sensor and multiple heat radiation grooves on both sides, Intelligent fan offers excellent heat dissipation effect, which reduces the noise and prolongs the life of product effectively.
  • Various ApplicationThis one weighs less than 2kgs and measures only 2.7*8.6*6.3inches, Applies for laboratory, school, home, electronic repair DIY, aging test and other requirements thanks to complete test probes and output cable with alligator clips.
  • What You Get1 x K3010D DC power supply, 1 x output power cord, 1 x Input power cord, 1 x test probes, 1 x User manual. (Buy Now Risk-Free with 30 days Free Of Return,we provide 12-Month after sale service, lifetime technical support. Please feel free to contact us if you have any concerns,we will reply to you to solve your problem in 24H.)

Brand: LONGWEI


Color: Silver


Material: Crystal


Item Dimensions LxWxH: 8.66 x 2.76 x 6.3 inches


Output Current: 10 Amps


Product Dimensions: 8.66 x 2.76 x 6.3 inches


Item Weight: 3.87 pounds


Manufacturer: LongWei Ltd.


Is Discontinued By Manufacturer: No


Date First Available: September 7, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, May 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • An EXCELLENT quality (but inexpensive) power supply!
Color: Silver
FINAL UPDATE (Hopefully!: I have now been using these 2 supplies for around 4 years and have not had a lick of trouble with either of them. They run very quietly, are very accurate and hold their settings perfectly. I would still recommend swapping out the amperage potentiometer for multi-turn (as long as you are OK with soldering) but it's still a great power supply without it. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ I really like this power supply. One of the main reasons i bought it was of course its price, but the reason i chose this over the other cheap ones was that, from the reviews i saw on YouTube, the others often seemed to have trouble with the Volt/Amp potentiometers (control knobs). They always seemed to be cheap single-turn ones that failed pretty soon.....and that's why i liked this one, because i knew that the Voltage control pot was multi-turn, and hence was definitely better quality. I am only a real newbie at electronics, but i had learned at least enough to know that. The Voltage pot IS multi-turn and it is easy to get it tuned in very easily. I have seen other guys struggling to tune in the Coarse/Fine pots on other supplies. The Current pot on this one, however, is NOT multi-turn and i wish it was....but it's still smooth and easy to work with. The calibration seems spot-on out of the box, but i know that i can fine tune it if need be from the trimmers inside, so no worries. UPDATE: I just purchased a second one of these and checked it out internally.....it is VERY easy to upgrade the current (amps) control to multi-turn also. I see they are 10K pots (WXD3-13 2W 10K...Google it) and i just purchased ten of these for $13 from Ebay and will be installing one in each of my power supplies' current contol. It's not a big deal but for $1 or so then why not? The other main reason i chose this one was that i saw how the other cheap supplies have the BIG flat heat sink aluminum plate slapped straight across the air flow towards the rear of the case, so all the other components get fried at the expense of the main chip staying cool! That seemed awful design to me. This chip has plenty of cooling (on nice proper finned heat sinks) but so does everything else because the main board is set parallel to the case so gets plenty of air flow. The fan cuts in and out under thermal control, except it does a quick self test upon power-up. The only thing i would wish here is that the speed could also be thermally controlled, but that is nit-picking and i could modify it myself anyway later if needed. The fan does NOT seem unduly noisy when it does come on and is not annoying to me. The voltage actually runs up to 31.9 volts and the current to 11.4 amps, so you get plenty for your money here. For newbies (like me!) to set the current, you have to short out the croc clips while at a low (4 to 7) voltage. After that, upon applying your load, the current will gradually increase as you increase the voltage....until you hit your set current and then it will switch to constant current mode and only the voltage will increase. OK, i will quit teaching the experts how to suck eggs here and leave it at that. In my view, this is an EXCELLENT power supply. The only reason i have taken off one star is because 5 stars would be "perfect" and since that doesn't exist, i have taken one off for the above nit-picky points. There aren't many reviews online of this power supply so i wanted to help correct that. My supply has worked faultlessly since purchase but that has only been a week, although i have tested it pretty rigorously in that time. If anything should change regarding my review, i will make an update here to let people know. I was going to purchase this on Ebay but then noticed it on Amazon for only a couple of dollars more, so i thought it was worth that to get the better "returns" peace of mind because with my Prime membership they will pay the return for me and i can also try it free for a month and, if i don't like it, i can return it for any reason. And no, Amazon don't pay me for this! Lol! UPDATE OK It has now been around 10 months since my purchase (just bought a second one!) and just wanted to say that there has been no change to my assessment. This power supply has been great in use and has never given me a problem. Just for those (like me) that worry that the thing might blow up after a month or two, it has never given any hint of a problem, and some of my usage has fairly put it to the test. OK...that's it. I will update again if this changes, also. UPDATE2 I have now swapped out the current pot in my supply for a 10K multi-turn pot and it is now a SUPERB power supply! It really has made a huge difference for the cost of $1.30 per supply. I highly recommend this modification AND the supply. UPDATE4 (3 was at the beginning) Six years now and counting. This thing is now perfect with no issues at all. I have now updated the stars here to 5 stars....it's perfect. ... show more
Reviewed in the United States on June 17, 2018 by englishrupe01
    • Perfect for zinc plating
Color: Black
I'm really impressed it works so well. I can run small parts at half an amp or run big Parts at 10 amps. Very versatile. I restore pre-war cars and needed something bigger than the 3 Amp unit this replaced. It's about a third the price of the Caswell unit and has the same specifications. They ship quick and I am super happy with this purchase. ... show more
Reviewed in the United States on April 18, 2024 by steve s
    • Not bad
Color: Black
Not bad for the price, great for testing electrical projects and messing around, nice small compact size. The only two things I wish were better are the leads, they don’t fit super secure in the machine, and the only other thing is you can’t adjust volts and amps independently
Reviewed in the United States on April 20, 2024 by Gun951
    • great supply for not much money
Color: Silver
Very solid power supply for a good price.
Reviewed in the United States on March 24, 2024 by William T. Anderson
    • Works flawlessly
Color: Silver
I like the simplicity of use. Using this for nickel plating
Reviewed in the United States on April 2, 2024 by Mr moai
    • excellent price for quality product
Color: Silver
I bought this to top balance my Lifepo4 batteries. This is my 3rd DC power supply from the same company. I opted for the Volts and Amps reading only. The other 2 models I have show watts as well. This model only has 1 decimal adjustment as the other 2 models I have show 2 decimals. I find with this model, it's easy to set at 3.6v and there is less fiddling with the fine adjustment knob. I like Longwei, their DC power supplies are quiet and don't heat up as other brands I've had or tested in the past. ... show more
Reviewed in the United States on March 22, 2024 by Tony
    • Works great!
Color: Silver
I used this intermittently over a period of maybe a year. Probably less than 20 hours of actual operation. Then it sat on the shelf for a couple years. I turned it back on to do some water splitting (electrolysis) for chemistry class demo and it worked great. I turned it off and now I can’t turn it back on again. No display. No fan. No voltage or current. I swapped out the power cord, tried different outlets, let it cool down (although it was only very slightly warm). Nothing. The next day, I realized all of the outlets in the kitchen were without power. I checked the circuit breaker and it was not tripped. Then I realized there is a GFI in the kitchen that had tripped. This is a great power supply. ... show more
Reviewed in the United States on January 18, 2023 by D. Allen
    • Too much feedback noise, glitchy servo operation.
Color: Silver
Cheaply made and poorly designed as to noise filtration. The high frequency nature of this item requires well designed noise filters and this did not have them caused my servos to have erratic movement. After 3 months they gave me my money back.
Reviewed in the United States on February 19, 2024 by robert b.

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