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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 1,048 reviews
Condition: New
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Availability: 15 left in stock
Fulfilled by Amazon
Arrives Thursday, Nov 28
Order within 20 hours and 25 minutes
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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


Connector Type: Barrel Connector


Input Voltage: 2.4E+2 Volts (AC)


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 8.66 x 2.76 x 6.3 inches; 3.88 Pounds


Item model number ‏ : ‎ LW-K3010D


Date First Available ‏ : ‎ September 7, 2017


Manufacturer ‏ : ‎ LongWei Ltd.


Best Sellers Rank: #16,353 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #7 in Lab Power Supplies #12 in Life Science Supplies


#7 in Lab Power Supplies:


#12 in Life Science Supplies:


Customer Reviews: 4.4 4.4 out of 5 stars 1,048 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Nov 28

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

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Similar Products

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
    • Works great!
Color: Black
Allows exact control of output power. Perfect for L.S. bench tuning.
Reviewed in the United States on September 23, 2024 by Florida Kracker
    • Great power supply, handy to have a cheap one around.
Color: Black
I like like being able to bench test parts, having a variable DC power supply at this price was a good option. It seems to be accurate and made well. I wish there was an output button so the voltage and current could be set and then applied. Instead you need to turn the unit on and apply an unknown supply and then bring it into adjustment. This can potentially damage some components under test,. Best option is to adjust it with no load, switch off, connect part to be tested, and repower. ... show more
Reviewed in the United States on January 3, 2024 by Bazooka Joe
    • Great product
Color: Black
Power for a slot car track
Reviewed in the United States on September 23, 2024 by Roger
    • Inexpensive, not cheap
Color: Silver
This power supply is the one recommended by a guy online who restores cast iron due to its ease of use and price point. I use this power supply for an electrolysis tank to clean cast iron. Very easy to use. I connect the wires. Set the voltage I need (20v). And away it goes. Over the several hours the voltage doesn't change a bit. Very constant output. The case remains cool at all times due to the fan running constantly. Fairly quiet, though it is in the shop so it doesn't really matter how loud it is. The price point on this unit is pretty low for what you get. Solid construction and reliability. Would recommend. ... show more
Reviewed in the United States on October 7, 2023 by Chris
    • 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
    • Use these at work so I bought one for home
Color: Black
We use these all the time at work as avionic techs. Perfect for troubling shooting because you can watch the amp draw. Super small so it’s convenient anywhere and the controls are easy!
Reviewed in the United States on September 10, 2024 by Kayla
    • pure junk
Color: Black
the knobs are garbage turn the knob 4 times all the way around the dial doesnt change, current doesnt flow, then other times i just think about touching it and the current jumps to 4v and kills my device cv and cc modes? lol, those are jokes, this device will randomly jump from one to another for no reason a complete waste of money ... show more
Reviewed in the United States on August 24, 2024 by Cody A. Putnam

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