KORAD KA3005D – Precision Variable Adjustable 30V, 5A DC Linear Power Supply Digital Regulated Lab Grade…
$109.99
Price: $109.99
(as of Jan 13, 2025 09:06:02 UTC – Details)
Product Description
The KA-Series of bench top power supplies from Korad Technology is packed with the features technicians need. The KA3005D is a heavy duty single-channel linear power supply features a bright and easy to read 4-digit LED screen to display the voltage, current, and power values. As well as memory locations (M1-M4) to store your favorite settings. The constant voltage and current settings are delivered with low ripple and noise, high reliability and high accuracy. Perfect for use in labs, colleges, and production environments where continuously adjustable. Work smarter with Korad!
Key Features
Over-Current and Voltage Protection
Built-in over-current and voltage protection settings. The KA-Series also features a dedicated output on/off button and precise rotary encoder for dialing in the exact settings for your project.
Four Memory Locations
Four dedicated memory locations to store your favorite current and voltage settings. Allowing you to easily jump between desired test settings. If you’re worried about accidental button pressing, panel can also be locked.
Bright 4-Digit LED Display
Precise readout that is legible from any angle on your workbench. The four digit LED display tells you exactly what the unit is outputting and what settings are currently active on the front panel.
Switchable Voltage & Smart Fan
The unit voltage is easily switchable from 110V to 220V on the rear panel. This is also the location of the fan air vent that kicks on based on internal temperature of the unit.
About the Manufacturer
KORAD TECHNOLOGY CO., LTD is a professional and new-style science and technology enterprise based on developing digital control & programmable DC power supplies, digital control & programmable DC electronic load, high-power power supplies, and switching mode power supplies, which are the main products of KORAD.And KORAD have been specializing in the research of the power supply industry and the engineers have very rich experience in power supplies.
Korad KA3005D Power Supply
Popular Applications
Automatic Testing in the Production LineSchool LaboratoryRepairingResearch & DevelopmentQuality Control Aging Test
Complete digital control with memory storage 4-digit display Intelligent temperature-controlled fan Compact design 10 mV /1 mA resolution Low noise and ripple
Voltage Range 0-30V Current Range 0-5A Load Regulation Voltage: ≤0.01%+2mV Current: ≤0.1%+10mA Line Regulation Voltage: ≤0.01%+3mV Current: ≤0.1%+3mA Setup Resolution Voltage: 10mV Current: 1mA Setup Accuracy (25°C ± 5°C) Voltage: ≤0.5%+20mV Current: ≤0.5%+10mA Ripple (20-20M) Voltage: ≤2mVrms Current: ≤2mVrms Temperature Coefficient Voltage: ≤150ppm Current: ≤150ppm Read Back Resolution Voltage: 10mV Current: 1mA Read Back Temp. Coefficient Voltage: ≤150ppm Current: ≤150ppm Reaction Time Voltage Rise: ≤100mS Voltage Drop: ≤100mS Interface Non-Programmable Interface Weight 9.52 Lbs / 4.32 Kg Dimensions 100mm (W) x 156mm (H) x 260mm (D)
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Customer Reviews
4.5 out of 5 stars
571
4.5 out of 5 stars
571
4.4 out of 5 stars
200
4.5 out of 5 stars
571
Price
$89.99$89.99 $104.99$104.99 $109.99$109.99 $134.99$134.99
Max Voltage
30V 30V 30V 30V
Max Current
5A 5A 5A 5A
Output On/Off Button
✓
✓
Memory Storage
✓
✓
Computer Interface Control
✓
✓
Power Readout
✓
✓
◆ HIGH PRECISION INSTRUMENT WITH MANY UNIQUE FEATURES – Very Easy setup with a rapid adjustment knob. There are buttons to switch to course or fine adjustment and a button to switch to voltage or current selection. The input voltage is switchable between 110/220 Volts for use in all countries. It has 4 Memory Recall buttons so you can save time setting up the supply to your required conditions.
◆ 4 DIGITS READINGS WITH BACK-LIT LED DISPLAY – With a 0.001V and 0.001A resolution, 4 digits provide more accurate and clearer visible readout for the voltage and current values with only 1 knob, extremely durable and easily visible even in low-light usage, meeting the needs of most people, ideal for business, small labs or the hobbyist at home.
◆ HIGH-QUALITY WITH ESSENTIAL SAFETY – Grounding wire, thermal protection, voltage and current overload and short-circuit protection ensure the safety. The built-in quiet variable fan reduces the operational noise and prolongs the life of product. There is a load on and off button so you can safely connect your load to the supply. There is also a lock button to prevent accidental changes.
◆ CONSTANT VOLTAGE & CURRENT OPERATION MODE – Easy to dial in the desired voltage with the encoded-controlled adjustment knob and then you choose the mode with one of the constant buttons.
◆ WHAT YOU GET – 1 x Korad KA3005D Power supply , 1 x power cord , 1x Set of 5 Amp test leads, 1 x User manual
Customers say
Customers find the power supply functional and providing good value for money. They appreciate its stable voltage output, adjustable settings, and ease of use. However, some customers report issues with fan noise and transformer inrush on startup. There are mixed opinions about the build quality.
AI-generated from the text of customer reviews
13 reviews for KORAD KA3005D – Precision Variable Adjustable 30V, 5A DC Linear Power Supply Digital Regulated Lab Grade…
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$109.99
osidfa –
I love these
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.
SuperNova –
Excellent power supply
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.
sarah veltman –
Excellent Linear Power supply. Low Noise, Stable and Accurate, with one caveat..
This is a great Linear PSU and very inexpensive. It’s stable and reasonably accurate using a Fluke meter it was around 0.1 volts off at 30 volts. It has no noise or stability issues as I would expect from a well designed linear PSU. The only caveat is, the interface is gimmicky with lots of buttons and memory controls. I have designed commercial power supplies in the past and all it really needs is a voltage and current adjustment potentiometer, with an accurate meter. All the other controls are unnecessary, and a total mess design wise. Apart from that, I would buy a second one as it’s excellent value for money, and great for hobby audio project testing.
Centers –
Very nice adjustable linear power supply
I’m just using this for hobby purposes at home but it works great. I’ve used some high grade power supplies so when I say this is a nice supply I have some experience. Now this is a low cost supply and I was concerned it might be a waste of money. So I connected a Tektronix scope to evaluate the output voltage. This is a linear power supply so the output voltage was very clean. I also checked for spikes when the output was switched on and off with and without a load and no spikes were seen. The current control and voltage control worked very well. The ability to connect this to your test circuit, setup the voltage and current and then turn the supply output on is a feature not even found on some high end supplies.The only issue I had was the power cord connection on this supply seemed a little lose to me.I would recommend this to the electrical/electronic hobbyist.
Mike D –
Performance at A Good Price
I’d been using it as a backup when I had to send in my Rigol DP832 for a failed control board.I used this unit for almost the entirety of a quick turnaround project, and it never did anything unexpected. No weird pulsing on on/off at the outputs, so that appears to have been fixed. Power button felt/feels solid, but the transformer still has a bit of inrush buzz on startup.I left it running for 4 hours at max power to see if anything odd happened. Not a peep.I thought I’d be giving it to a colleague when I got my DP832 back, but this PSU’s small size and performance means it’ll be going into the mobile toolbox instead 😛
Tonycstech –
Not impressed
Noisy output but at the very least its consistent across all voltages.only 4 memory banks, not enough.Only 5 amps. Not enough.10A model is overpriced. it should not cost double having exact same thing except bigger transformer.It does not even have PC interface like cheaper counterpart products.Honestly not sure why it cost this much. Maybe brand cost more than a product its self.
dnoyeB –
Solid Unit for the Money
According to Amazon I purchased this 10 years ago. I’m surprised they are still selling the same model. It’s worked well for me. The current limit works as well as the voltage limit. The current limit can be adjusted in 1mA steps. The voltage limit can be adjusted in 10mV steps. I haven’t noticed any appreciable spikes on activation of the output. The jog knob works well. The connections are solid. The on/off button is solid. The rubbery push buttons feel good enough. Once you get used to how the controls work it’s relatively fast to adjust. I’m not seeing much noise either. It’s actually quieter than any of my USB batteries that all seem to spit out some noise in the 450kHz range.
MarkV –
Tremendous value
There are a lot of cheap junk power supplies on Amazon — this is not one of them. It’s a LINEAR power supply not a switching power supply. The cheap ones are little more than repurposed computer power supplies. The construction quality and controls are like what you’d find on units costing at least twice this amount. The only problem I have with it is there’s a voltage spike on the output when you power it on (after it’s on the output on/off button is clean though). I would have knocked off a star for that but you’ll find much worse in all the cheap switching power supplies, so I leave it at 5 stars for the incredible value. Very glad I bought this unit and I recommend it if you can avoid problems with the power-on spike at the output.
Gert van Biljon –
Very happy with this power supply. Love the ability to limit the supply current down to single milli Amperes, very handy if you are working with Leds and need to take the current down to 14mA. Also like the ability to have 4 preset outputs as well. Just get yourself some extra banana plugs with leads, as there werent any supplied with the psu that I received
Felipe LomelÃn –
Llegó antes de lo esperado, funciona perfectamente,
Adam –
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.
John –
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.
Dominik –
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 optionsCons:- …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…