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Eventek

DC Power Supply Variable,Eventek Bench Adjustable Power Supply 30V 5A,Switching Regulated DC Power Supply with LED Display，Coarse and Fine Adjustments with Alligator Leads

    • Based on 1,368 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Dec 19 – Jan 10
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Size: 30V 5A


Color: Black


Features

  • High-definition displayVariable power supply, backlit LED can display 3-digit readings in high-definition, and the values can be easily seen in low-light environments. You can easily adjust it in the range of 0-30V and 0-5A.
  • Constant voltage and constant current mode automatic conversionConstant voltage mode (C.V.) and constant current mode (C.C.) will automatically switch with the connection of the load, of course, you only need to rotate the fine adjustment and coarse adjustment knob to get the value you want , extremely easy, it will become a good hand for your work and life.
  • Stable output and intelligent heat dissipation Low noise output, output ripple less than 200mv, sustainable and stable output. And built-in thermal sensor, intelligent temperature control, greatly improve output stability and service life!
  • Safe and ReliableFor your safety, all power supplies have been manufactured and tested in multiple processes, and have functions such as short circuit protection, thermal protection, and overload protection.
  • Small and Diverse ApplicationsWorried about the bulky power supply? This DC power supply weighs less than a laptop at just 3.2 pounds, saving more space on your workbench. And you can use it in various scenarios such as laboratory, repair, electrolysis, burn-in test, electroplating, brush plating, electronic DIY, etc.

Brand: Eventek


Color: Black


Output Current: 5 Amps


Output Voltage: 30 Volts


Package Dimensions ‏ : ‎ 11.42 x 7.87 x 4.61 inches; 3.62 Pounds


Item model number ‏ : ‎ 305D


Date First Available ‏ : ‎ June 16, 2022


Manufacturer ‏ : ‎ eventek


Country of Origin ‏ : ‎ China


Best Sellers Rank: #35,904 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #20 in Lab Power Supplies #35 in Life Science Supplies


#20 in Lab Power Supplies:


#35 in Life Science Supplies:


Customer Reviews: 4.3 4.3 out of 5 stars 1,368 ratings


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If you place your order now, the estimated arrival date for this product is: Dec 19 – Jan 10

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Top Amazon Reviews

    • Works well for my needs
I use this to test equipment for my job, only requires 12v-13V and no more than 3A. This is similar to what I use in my office, however, the coarse tuning knob for voltage is very sensitive. Once I have voltage set I do need to use the fine tuning knob to simulate a voltage spike and they are close together so I make some oopsie a here and there. I’ll likely add an extension to the knob to make it easier and not hit the coarse knob by accident but it holds its settings perfectly and is a wildly good value. Noise levels are a little better than I expected at this price point so I’m very happy with this product. ... show more
Reviewed in the United States on July 21, 2023 by Andy Anderson
    • Very nice variable voltage and current power supply.
Nice power supply with variable voltage and current. Great for bench work or most anything requiring up to 30 volts at up to 10 amps. The voltage coarse control is slightly touchy, but if you turn slowly should be no problem, then use the fine adjust know to get exact voltage you want. Works great for my usage. Seems well made and neat package. ... show more
Reviewed in the United States on November 4, 2023 by R EVANS - TENNESSEE
    • Working as it should
Size: 30V 5A Color: Gray
I bought this unit in order to electroform jewelry components and it is working fine for my application. I’ve only had it a short time so I can’t speak to its long term reliability. The instruction sheet leaves a little to be desired if you have no prior knowledge, and there is zero ability to communicate with the manufacturer. Just saying… ... show more
Reviewed in the United States on March 9, 2024 by Reader
    • Great but what’s the max power output?
Review Image by Sun Y Sun Y
Review Image by Sun Y Sun Y
Review Image by Sun Y Sun Y
Review Image by Sun Y Sun Y
Review Image by Sun Y Sun Y
The media could not be loaded. Pros: Good value. V/I limiters. Accessories. Cons: 300W max output? Likely not. I figured it was time I get myself a benchtop power supply instead of using these wall plugs that I have. Most reviewers did say the knobs are a challenge to use and I agree. The fine and coarse are not what you expect in terms of precision. So having a multimeter handy is at the very least a must have. Along with the multimeter it hit 5V, 12V, and max with no issue - max it can do seems to be 31.54V. When set to 0V and then discharging the output caps you get 2.5mV. When you power it off from max it takes about 40sec to get to 100mV. To get to max from off is less than 3sec. The current limiter seems to work fine. You can see picture I tested it at 10A. My fuse isn’t working so I can’t really verify if it’s truly 10A. Considering that the voltage wasn’t too far off I’d say it’s accurate. I don’t know what the maximum power output is and the manual doesn’t give a clear indication other than the range. I posted a question and maybe the seller will respond. You can search for “maximum power output”. So is it truly 300W? Unlikely, since it small. It comes with a few alligator clips which is very much appreciated. Overall, I’d say this is great for home use and if you’re purchasing this then most likely you already have a DMM to go with it. Just be aware we/I don’t know the max power output. *Update* Seller responded that it is 300W. I need find some beefy resistors to test it out someday. Will update when I get to it. ... show more
Reviewed in the United States on September 13, 2020 by Sun Y Sun Y
    • item was exactly as described
Size: 30V 5A Color: Gray
Product should have been enclosed in a box suitable for shipping. Product box was coming apart when iy reached me. No damage but box was falling apart.
Reviewed in the United States on March 27, 2024 by Jim Carroll
    • It would have been nice to have a new power supply as payed for ....
Size: 30V 5A Color: Gray
The product was obviously used by someone before me - box was dogeared from previous handling, screen protector cellophane was crumpled and loose in the box and finger marks all over the screen. I have yet to see if the product works, but not impressed so far. Update - i went to use the power supply today - dead out of the box. I checked the fuse - this has blown!! So much for a new product - it is going back :-( ... show more
Reviewed in the United States on April 27, 2024 by Sophie
    • Very easy to use, helpful measurement tool
Size: 30V 5A Color: Gray
I was not sure exactly what a power supply with "adjustable voltage and current" really was... The description is not very clear. Now that i have it in my grubby little hands, I fully understand that, and love it! Here is how you use the current adjustment. It is both a current limit, as well as a ammeter. In other words, you can set it to not allow more current than you set. Set it by putting the DC volts at around 5 volts, short out the power supply, and adjust the current to the maximum you ever want in your current project. Un-short, set the voltage, and off you go. If your circuit tries to draw more current than you have set, a small hammer comes out from the back of the supply and smashes your project... :) No, actually, the voltage drops. The great thing is, you can read out the current draw, so in effect, you have a current meter on your project, which is REALLY NICE! It seems very accurate, as well: I set mine to 0.500 amps, and it got all the way to 0.499 and did not interfere. Amazing! BTW, this ability SHOULD allow you to charge a LI-ION battery. Set max current to 500 ma, and voltage to 4.2 or less. Initially, the battery will draw way more than 500 ma, so voltage will drop to correct voltage to deliver 500 ma. Once it gets to a point where full voltage is reached, the current will drop off. NOTE: if battery voltage is less than 2.8V, trickle-charge it first with 10 ma before you go to full current charge. Also, when current is less than 50 ma, you are done. Great lab supply! Get 2, so you can have two separate voltages!!! ... show more
Reviewed in the United States on August 19, 2019 by Eric C. Anderson
    • Works, but not what I needed it for
It works fairly well as a power source, but I originally bought it for copper plating. It does not like conductive paint for some reason, I can't get the amprage up high enough without upping the voltage and burning the copper. I was hoping to get away from my homemade power supply and have more control over my plating process, but I guess I'll have to stick with my old phone charger as a plating power supply. It does work fine if I'm plating another metal with copper, so maybe I'll try with a copper based paint instead of a graphite based paint. If it works for a copper based paint I'll up the rating since I would be able to stop using my old phone charger as a power source. To be clear, I have zero issues using an old charger that outputs 5v at 0.3amp. but I can't even get this thing to stick to 0.01 amp at 5v on my graphite paint. I did test this on other devices, and I plan on keeping it for other projects I have planned, just probably will not be using it as my initial intention ... show more
Reviewed in the United States on February 9, 2024 by donnie m.

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