DROK 24V Power Supply, AC 110V/220V to DC 0-24V 20A 480W Buck Converter, Variable Adjustable Adapter Regulated 5V 12V 24V Volt Switching Voltage LED Transformer 20A Amp Charger for Computer Lab

【Volt Adjustment】 Input Voltage can be 110V or 220V. Wide adjustable output Voltage range: DC 0-24V. This supply is suitable for 5V 9V 12V 2

About this item

  • 【Volt Adjustment】 Input Voltage can be 110V or 220V. Wide adjustable output Voltage range: DC 0-24V. This supply is suitable for 5V 9V 12V 24V devices. The voltage precision is 0.1V. Note——The maximum current is 20A. But the actual current is depended on the load. No matter how many voltage is adjusted, the current is 20A and can not be regulated. It can be used to device of 2A 3A 5A 10A 12A 15A 20A. Make sure to use the devices which is below 20A.
  • 【Hareware】 This Buck Converter is equipped with LED screen, heat sink and cooling fan. The LED screen can clearly display the output voltage. Heat sink and cooling fan can control the temperature in a safe range. During the running power is high, the cooling fan will automatically activate with little noise.
  • 【Easy Operation】 This supply is no need to install, after connecting wire, it can be used to adjust output, which is convenient. The potentiometer is inset into the supply. Only to rotate the potentiometer can adjust output parameter.
  • 【Protection】 Over Load Protection, Over Voltage Protection, Short Circuit Protection, which can protect your device from damage. Note: the default input voltage is 220V, before using, please switching the input voltage to 110V/220V according to your city voltage.
Category: Power AccessoriesPower ConvertersRanked #99 of 14 in Power Accessories
8.8Our score
Our verdict

【Volt Adjustment】 Input Voltage can be 110V or 220V. Wide adjustable output Voltage range: DC 0-24V. This supply is suitable for 5V 9V 12V 2

Ranked #99 in Power Accessories · 4 things we like

Quick answer The DROK 24V Power Supply scores 8.8/10 with us. Amazon owners rate it 4.4 out of 5 across 418 reviews, in line with the 4.4 average of the 10 power converters we track. It was listed at $39.99 on Amazon when we last checked in September 2026.

【Volt Adjustment】 Input Voltage can be 110V or 220V. Wide adjustable output Voltage range: DC 0-24V. This supply is suitable for 5V 9V 12V 24V devices.

The voltage precision is 0.1V. Note——The maximum current is 20A. But the actual current is depended on the load.

No matter how many voltage is adjusted, the current is 20A and can not be regulated. It can be used to device of 2A 3A 5A 10A 12A 15A 20A. Make sure to use the devices which is below 20A.

【Hareware】 This Buck Converter is equipped with LED screen, heat sink and cooling fan. The LED screen can clearly display the output voltage. Heat sink and cooling fan can control the temperature in a safe range.

During the running power is high, the cooling fan will automatically activate with little noise. 【Easy Operation】 This supply is no need to install, after connecting wire, it can be used to adjust output, which is convenient. The pote

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Product information

6 specifications
Brand NameDROK
Model20050
Number of Items1
Part Number200571
Current Rating20 A
Specification MetCE, FCC

Pros & cons

What we like
  • 【Volt Adjustment】 Input Voltage can be 110V or 220V. Wide adjustable output Voltage range: DC 0-24V. This supply is suitable for 5V 9V 12V 24V devices. The voltage precision is 0.1V. Note——The maximum current is 20A. But the actual current is depended on the load. No matter how many voltage is adjusted, the current is 20A and can not be regulated. It can be used to device of 2A 3A 5A 10A 12A 15A 20A. Make sure to use the devices which is below 20A.
  • 【Hareware】 This Buck Converter is equipped with LED screen, heat sink and cooling fan. The LED screen can clearly display the output voltage. Heat sink and cooling fan can control the temperature in a safe range. During the running power is high, the cooling fan will automatically activate with little noise.
  • 【Easy Operation】 This supply is no need to install, after connecting wire, it can be used to adjust output, which is convenient. The potentiometer is inset into the supply. Only to rotate the potentiometer can adjust output parameter.
  • 【Protection】 Over Load Protection, Over Voltage Protection, Short Circuit Protection, which can protect your device from damage. Note: the default input voltage is 220V, before using, please switching the input voltage to 110V/220V according to your city voltage.
What could be better

    DROK 24V Power Supply: questions & answers

    Is the DROK 24V Power Supply worth buying?

    Yes, it is one of the stronger picks in its group. We score the DROK 24V Power Supply 8.8 out of 10. Amazon owners rate it 4.4 out of 5 across 418 reviews, in line with the 4.4 average of the 10 power converters we track.

    How much does the DROK 24V Power Supply cost?

    It was listed at $39.99 on Amazon when we last checked in September 2026. That is close to the $35.49 median for power converters in our catalog. Amazon prices change daily, so use the price button on this page to see the current figure.

    What options does the DROK 24V Power Supply come in?

    Amazon lists 10 options. Size: 0-48V 0-10A, 0-24V 0-20A, 0-60V 0-8A, 0-12V 0-40A. Color: Dual Display Current Adjustable, Single Display Fix Current, Dual Display Fix Current. Pick an option on this page and the button opens exactly that model.

    What are good alternatives to the DROK 24V Power Supply?

    Similar, well-rated power converters in our catalog: Meiyue 3V~24V 6A 144W Adjustable Power Supply 3V 5V 6V (9.2/10, 4.5 stars from 729 owners); Wefomey Universal Power Supply 3V~24V 6A 144W (9.0/10, 4.5 stars from 103 owners); Pyramid PS9KX Universal Compact Bench Power (9.4/10, 4.7 stars from 2,260 owners).

    Customer reviews

    All reviews on Amazon
    4.4418 global ratings
    5 star89%
    4 star11%
    3 star0%
    2 star0%
    1 star0%

    Breakdown from the 9 most helpful reviews we imported.

    R
    Randy
    Verified purchaseJanuary 28, 2024
    Taig Micro lathe DC motor setup

    I am using this Drok 115VAC to 24V 20A variable power supply, along with a YaeTek 24V DC 350W Permanent Magnet Electric Motor, to drive my Taig Micro II lathe. Considering this whole kit cost about $80 I'm very happy with the result. While not perfect, the value is so high I have to give it 5 stars.If you've been thinking about one of these motors for your micro lathe I say, go ahead! If you are running the 115VAC Marathon motor that Taig sells, then you know about that motor. It's OK, but the speed range with the 4 step pullies is 430 RPM to 1725 RPM, pretty high for larger parts. And it's bi

    A
    A Y G
    Verified purchaseNovember 1, 2025
    Cheap alternative to a benchtop supply.

    I got this to kind of use as a benchtop supply. I had a variety of DC motors I needed to test, at a variety of voltages and power ratings. They were intended for battery powered applications, but I didn't have the variety of batteries I would have needed to test them. I looked at actual benchtop power supplies, and they all seemed to top out at about 10 or 11 amps, and were much more expensive. Before ordering this, I hadn't seen anything like this before, although they look to be pretty common.I also bought some leads that I connected to it to make it easy to connect and disconnect what I am

    A
    A. Ramos
    Verified purchaseJuly 16, 2024
    Remember to set the input voltage switch!

    When I first installed this power supply I forgot to set the input voltage switch to 115V. As a result the power supply delivered *almost* 22.8V when the dial was set to the maximum. This led me to erroneously believe it had poor regulation and I was about to return it and posted a negative review.After having a careful look, I set the input voltage switch to 115V and readjusted the dial. It now delivers the correct voltage and sustains it within the load range I am using it with.So my suggestion is to first have a look at the input voltage switch as it probably comes set to 230V by default in

    E
    Eric I Ewoldsen
    Verified purchaseJuly 18, 2025
    Nice power supply

    It works great. It is exactly as described and powers my protect flawlessly. The voltage displays shows it will go a few volts over 24v and I like the 3 sets of output terminals.

    J
    Jake
    Verified purchaseDecember 21, 2023
    Excellent Supply so far

    This works really well, the adjustment range isn't super precise but you get the full range (mine goes up to something like 27.7V) and the accuracy seems good, when checked with my cheap multimeter it's always within about 0.2V... For the price this adjustable supply has so many possibilities; I'm currently using it to power a ~12V diesel heater with a lead-acid battery backup during the winter from the mower. I set it at 12.7 to 12.9V and it keeps the battery topped off and runs the heater no problem. Only complaint would be that there's no eyelets or anything to mount it, just a few threaded

    R
    Ringo
    Verified purchaseApril 3, 2024
    Keeps voltage at the set value.

    This is a replacement unit, on the first one the LED display did not show the proper voltage reading compared to a Fluke meter. Also the LED display did not display all the time. They were very good at replacing and the shipping was quick. Very happy with this unit!

    B
    Billy L.
    Verified purchaseJune 11, 2026
    Works great

    Power supply works great

    A
    A stranger
    Verified purchaseJune 8, 2025
    Great buy

    I absolutely love this power supply. This is the second power supply that I've owned and I really enjoy that I can adjust the voltage with the knob it has held up for you multiple months now and I really appreciate the voltage adjustment switch on the input side too.! Bonus points use the multimeter and the voltage adjustment is accurate. The fan's not noisy. And bonus points it sustained no damage when I accidentally shorted wires due to a bad connection and the wires overheated but the power supply is still a chance

    Customer reviews are shown as published on Amazon and are not written by Do Best Deal.