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Returnable until 31 Jan 2025
For the 2024 holiday season, eligible items purchased between 1 November and 31 December 2024 can be returned until 31 January 2025.
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KORAD KA3005D-Precision Variable Adjustable 30V, 5A DC Linear Power Supply Digital Regulated Lab Grade

4.5 4.5 out of 5 stars 192 ratings
$156.19
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Purchase options and add-ons

Brand Korad Technology
Material Metal
Item weight 10 Pounds
Connector type Barrel Connector
Input voltage 220 Volts

About this item

  • Compact Design with Dual 4 Digit LED Displays and Digital Controls - Switchable power input 110/220v
  • 4 sets of parameters can be stored inside for fast recall
  • Output switch control
  • Circuit protection for over load, short circuit and over temperature.
  • Automatic switching between mA and A display
› See more product details

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Customer reviews

4.5 out of 5 stars
192 global ratings

Top reviews from Canada

John
5.0 out of 5 stars Power supply works as described
Reviewed in Canada on June 11, 2024
Verified Purchase
Power supply works as advertised. Been using it for voltage injection without any issues. It's great that it has overvoltage protection and overcurrent protection. There lots of different power supply manufacturers out there to choose from but from my research, this one had great reviews from multiple sources for this price range. Digikey also sells this model which means the power supply should be decent as Digikey usually does not sell inferior products. I've been using it for several months already and have not had any issues so far.
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Brad de Leon
5.0 out of 5 stars After a year it’s still going strong, works as expected
Reviewed in Canada on April 2, 2024
Verified Purchase
Does the job, no problems, would buy it again
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Adam
5.0 out of 5 stars 1 year later -- no regrets
Reviewed in Canada on July 4, 2018
Verified Purchase
Bought it a year ago and it's been working great with no complaints or concerns. Turns on every time and does what I need it to. Controls are quick and convenient and the output toggle is awesome so you're not removing/replacing leads every time you need to adjust the power supply. These seem to be the most noticeable things you lose out on when you buy a cheaper bench supply, but aren't a concern here.

When I was researching the purchase I was concerned by how many people seemed to be complaining about fan noise... I used it for a weeks-long stint as a power supply for a ham radio and the fan is probably the most inoffensive noise I can imagine. The only part of calling it "a little loud" that's accurate is the "little" part.

For the hobbyist or prosumer, I think this is exactly the right price point to balance quality/features and cost. Don't go any cheaper. If you're feeling rich, grab a used HP/Keysight unit for about twice the price.
3 people found this helpful
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Stan
5.0 out of 5 stars Korad KA3005D 30V,5A power supply
Reviewed in Canada on October 5, 2024
Verified Purchase
Quality piece of equipment reasonably priced sold by Amazon.Happy with the purchase,Stan,London,Ontario
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Soniclab
4.0 out of 5 stars Decend bench supply
Reviewed in Canada on November 4, 2023
Verified Purchase
This is my second one of these. I recently blew the other one up... "oops" it was my fault completely. Good enough to buy again. I like the digital buttons, all the other ones don't have memory and have analog controls. I prefer this interface over other comparable models.
One person found this helpful
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Bay D.
5.0 out of 5 stars I do like the 4 presets as it makes it easy to ...
Reviewed in Canada on June 20, 2017
Verified Purchase
This power supply definitely meets our needs. it has very low ripple even at max amperage draw. The fan is a little loud, but not to the point where it is objectionable and you don't notice it after awhile. I do like the 4 presets as it makes it easy to change both voltage and current limits very quickly. It even showed up 3 days before it was scheduled to arrive.
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Electronic Technologist
5.0 out of 5 stars This is a good power supply.
Reviewed in Canada on September 25, 2019
Verified Purchase
This supply is a quality build for the money. It is my new bench supply. I actually like that you can set the voltage first then enable/disable the output. Some people were complaining that you couldn't set the output voltage and vary it on the fly but you can if you follow the instructions. Current limit is a plus for those oops moments when you make a wiring mistake. This power supply is much better than another brand (much cheaper) that I ordered a few weeks ago in which I got a shock off of the metal case and the supply blew up within 30 seconds. All in all I'm glad I bought this power supply. I recommend it.
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The Big G
5.0 out of 5 stars Unit is a FANTASTIC deal for the price
Reviewed in Canada on March 17, 2016
Verified Purchase
Unit is a FANTASTIC deal for the price. Its probably not quite as robust as the $500 versions of this type of equipment, but i connected it to my oscilliscope and with or without a load on it, it gets to the designated voltage quickly and without any overshoot. I couldn't be happier with this in my arsenal. An excellent choice for someone looking to help get there workbench setup and start tinkering.

The current control functions are great if you work with or want to test things like LEDs as you won't need to worry about limiting resistors and such since you can just set the max milliamps on the power supply and not worry. When the unit is on, it shows you what the voltage and current outputs actually are as well, so you can easily see what your device is drawing, and if the power supply is lowering the voltage to limit the current flow.
One person found this helpful
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Top reviews from other countries

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osidfa
5.0 out of 5 stars I love these
Reviewed in the United States on October 22, 2024
Verified Purchase
I have a bunch of these and they work absolutely great. One of them has been running 24/7 for probably 2 years now. There are no power spikes if you use the output on/off button, the only way to get a small spike is to cut the mains power while the output is enabled but you're not supposed to do that anyway. I very much prefer these over switch-mode supplies because the output is extremely clean. The voltage and current settings and display are very accurate. I use these all the time and I bought my first one 4 years ago; I have both KA3005D and KA3005P (programmable) models and I've used to software to script one of them for automated testing. I did have an issue at one point where I needed customer support and both Korad and the seller (SRA) have been absolutely great with their support which is really important to me and I would say they went above and beyond. I had originally considered buying a "fancy" bench-top dual supply but decided that for the same money I can get 3 of these and that turned out to be a very good decision. My priority is to never get into a situation where I needed another power supply and not have one. I have 6 of them permanently as part of my work bench and a few more to move around where needed. If for some reason I needed another one I would buy this one again, no question.
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Dominik
5.0 out of 5 stars Hands down the best price to quality PSU on amazon at the moment.
Reviewed in the United Arab Emirates on June 22, 2024
Verified Purchase
This device is just perfect if you are an older guy who went through his fair share of wrestling with those old trafo-based, fidgety, no finley-adjusted PSU's, energized outputs, available at the market 10 or 20 years ago.
Pros:
- stable output even under max loads
- no overshooting or any weird spikes
- capable of adjustments on non-energized output
- digital interface capable of fine adjustments
- clear to read and functional with memory options
Cons:
- ...
If you are in need of a good bench PSU just buy it. I already have two of them, seriously considering buying a third one...
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Felipe Lomelín
5.0 out of 5 stars Perfecto
Reviewed in Mexico on November 28, 2020
Verified Purchase
Llegó antes de lo esperado, funciona perfectamente,
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SuperNova
5.0 out of 5 stars Excellent power supply
Reviewed in the United States on August 28, 2024
Verified Purchase
Very easy to use, accurate and reliable. If you look at forums this model comes highly recommended; such a high value product at this price point. Being a linear power supply it's a little wasteful, but I haven't noticed an excessive amount of heat, and while I haven't observed it myself, the waveform is said to have low ripple. If I needed another supply I would buy another without hesitation.
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Angel Perez Davila
5.0 out of 5 stars Excelente
Reviewed in Mexico on November 30, 2018
Verified Purchase
Me gusto mucho el envío llego antes de lo previsto y del artículo es una fuente de alimentación profesional y muy precisa
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Angel Perez Davila
5.0 out of 5 stars Excelente
Reviewed in Mexico on November 30, 2018
Me gusto mucho el envío llego antes de lo previsto y del artículo es una fuente de alimentación profesional y muy precisa
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