DC Power Supply Variable, Bench Power Supply with Encoder Adjustment Knob, Output Enable/Disable Button, Adjustable Power Supplies with USB Quick-Charge, Short Circuit Alam (30V 10A Black)
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$49.99
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Availability:
20 left in stock
Arrives
Friday, Nov 13
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At a glance
- Condition
- New
- Size
- 30V 10A
- Color
- Black
- Model
- 30V 10A BLACK
- Dimensions
- 7.87 x 0.35 x 0.57 in
- Weight
- 1.48 kg
- Connector Type
- usb
- Works with
- Personal Computer
Features 5
- High-precision Encoder Knob: Different from general knobs, this DC power supply has a precise encoder knob. You can press the knob to switch each digit, and then turn the knob to customize each digit in the range of 0-9. Set the voltage or current you want more accurately.
- Output Enable/Disable Button: In the process of using the bench power supply, Output button can prevent us from forgetting to turn off the output and causing damage to the load. Just press this button to turn on or turn off the output of the power supply. This makes it more convenient for you to use the variable power supply.
- Overcurrent Protection: When the OCP function is turned on, if the load equipment is short-circuited during operation, the adjustable power supply will automatically stop output and send a buzzer to alert the user. Protect the adjustable power supply and load from damage.
- Precise 4-digit LED Display: The dc power supply is equipped with a high-definition 4-digit display with data accurate to 0.01 V and 0.001 A. It has constant voltage (C.V.) and constant current (C.C.) modes, which can be switched automatically. You can see the working status indicator on the display. Additionally, you can adjust the brightness of the screen according to your needs.
- USB Fast Charging Port: The variable power supply is configured with an 18W fast charging port. No more mplaining about mobile phones or repaired devices not being charged in time. The NANKADF dc power supply allows you to avoid this dilemma. It charges your devices quickly anytime, anywhere.
Description
NANKADF is a company that specialises in making DC power supplies. We have our own R&D patent and professional production factory. Standard and strict quality control is our aim. NANKADF dc power supplies have always been upgraded and innovated in the field of expertise. Whether you are an engineer in a specialised field or an electrical enthusiast, it is the perfect partner for you. What are the advantages of NANKADF WPS dc power supply? It integrates nearly all mainstream premium features of modern DC power supplies into one compact unit, including an independent output button, encoder knob, short-circuit alarm, overcurrent&overvoltage protection, silent operating mode and more. How is an encoder knob different from other knobs? Unlike traditional analog potentiometer knobs that require repeated trial-and-error fine-tuning, the digital encoder knob allows direct, precise one-step parameter setting. It greatly boosts your operation speed and adjustment accuracy. What safety features does the nankadf power supply have? The independent output switch lets you adjust parameters safely without short circuits. It also comes with short-circuit alarm, overvoltage, overcurrent and overheat protection to protect your devices. Can it be used for electroplating? Yes, it can. In addition, it can be used for charging batteries, repairing tools, DIY circuits, laboratory instruction, and more. It is suitable for both professional electricians and hobbyists. Can it repair cell phones and computers, or charge batteries? It can be used to repair cell phones and computers. Dimensions: 5.81*7.51*3.56 INCH Weight: 1.15kg 1 * Dc Power Supply 1* Power Cable 1 * Output Cable 1 * User Manual NWPS KPS High Power NTPS NGC NAPS
Specs 23
| Model Name | 30V 10A BLACK |
|---|---|
| Brand | NANKADF |
| Connector Type | usb |
| Output Wattage | 300 |
| Form Factor | Compact |
| Wattage | 100 watts |
| Cooling Method | Air |
| Item dimensions L x W x H | 7.87 x 0.35 x 0.57 inches |
| Item Weight | 1.48 kg |
| Connector Type Used on Cable | usb |
| Current Rating | 10 A |
| Maximum Input Voltage | 115 volts |
| Minimum Input Voltage | 115 volts |
| Item Dimensions | 7.87 x 0.35 x 0.57 inches |
| Number of Packs | 1 |
| Number of Items | 1 |
| Unit Count | 1 Count |
| Manufacturer | NANKADF |
| UPC | 780279579925 |
| Built-In Media | DC POWER SUPPLY，Output cable, power cord, manual |
| Model Number | 30V 10A BLACK |
| Mfr Part Number | NPY2 |
| Warranty Description | 1 |
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Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Nov 13
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Time will tell, but seems like a great purchase.
Size: 30V 10A
Color: Black
Just got it, so take that into consideration when reading this review. However, after opening, powering it on, and spending an hour putting it through some initial testing I am VERY happy with this purchase with the exception of one itty-bitty issue (see last paragraph). Obviously time will tell, but it looks and feels like a quality unit. I purchased the 30v-10a unit and after measuring with a good multimeter, the NANKADF accuracy is dead-on below 15 volts and within .005 volts at higher voltages. That's more accurate output than a wall-wart and most PCB power supplies (7805, etc). The encoder knobs are wonderful and let you dial in the voltage/current level you desire easily and error free. I did not find the audible "beep" when turning/pressing knobs to be either loud or annoying as others have suggested in their reviews, however you can disable this although I found the included instructions a bit confusing. 1) Press the output button continually until the unit goes into setting mode. 2) Press the VOLTAGE button until the AMP number shows "4". 3) Turn the VOLTAGE button until the WATT number shows "0". 4) Press the VOLTAGE button until the AMP number shows "6". 5) Press the VOLTAGE button once more to save the settings and return to operational mode. My only complaint is that after selecting and setting the 4th digit for both the Voltage and Amp displays, the unit automatically defaults to the 3rd digit for subsequent adjustments when it should remain selected on the 4th digit. For example, if I want 25.64 volt output, I select and set the first digit to "2", select and set the second digit to "5", select and set the third digit to "6", select and set the fourth digit to "4". My next turn of the Voltage knob should either increase or decrease the "4" in the fourth digit because that was the last digit I selected. However after a 5 second delay, turning the knob changes the value of the "6" in the third digit and so I have to press the knob moving through the display to get back to the fourth digit to adjust it again. While I don't anticipate spending a lot of time adjusting tens of mV, it is nonetheless a little aggravating.
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Reviewed in the United States on March 11, 2025 by Jon
Best tool on my workbench - by far!
Size: 30V 10A
Color: Black
Absolutely great. I work on small LED toys and other electronics, including microprocessor stuff. This bench power handles all the unipolar DC loads I have. It has constant voltage and constant current settings. Shorting the output produces an immediate shut off and audio alarm, but does not change any of the settings. Push the output button and it's back on. The output button also lets me turn off the supply, make a change on the project and turn it back on in a jiffy. Provides voltage, current and power displays. Reliable and silent. The (unmetered) front panel USB source is convenient. Very highly recommended.
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Reviewed in the United States on August 31, 2026 by Andrew Ellis
Great little machine.
Size: 30V 10A
Color: Black
I bought this to power my silver cell. and it works perfect. a great feature that you really need for a silver cell. is it kicks off and alerts when the silver grows into the anode material. the accuracy readings are very close when you check against a multi meter. easy to connect. its compatible for any dc source. the adjustment can be fine tuned. it comes with cables and clips. its lightweight. and small enough to easily store. ive used it down to 1 volt and less than an amp. and used it to deplate silver plated items perfectly going up to 25 volts with no issue. the fan works great regulating its internal temp. i ran it 10 days straight in my silver cell. with no breaks. and it worked like a champ.,
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Reviewed in the United States on May 6, 2026 by 99 K. Bachman
Fantastic little power supply!
Size: 30V 10A
Color: Black
It has been working great for me so far. Even the overcurrent protection is spot on. I use power supplies like these to test new battery-powered device prototypes to determine their operating voltage range and current limits, by artificially limiting voltage/current to realistic battery conditions and simulating power drain under load. This supply allows me to do all of that with ease and has proven very accurate. It's polling rate could be slightly faster, but I'm not gonna knock it at this price. It absolutely gets the job done for a hobbyist-friendly price.
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Reviewed in the United States on May 2, 2026 by Michael R
High-Precision Bench Power at a Budget Price
Size: 30V 10A
Color: Black
For a professional workbench or homelab setup, the DC Power Supply Variable with Encoder Adjustment is a versatile and compact solution that offers a significant step up from basic analog-knob units. Its combination of digital precision and safety features makes it a reliable choice for everything from charging batteries to testing custom PCB projects.Precision Controls and ErgonomicsThe high-precision encoder knob is the standout feature of this station. Unlike traditional potentiometers that can be sensitive and hard to dial in, this encoder allows you to press the knob to select a specific digit and rotate it for fine-tuned adjustments. This ensures you can set your voltage and current with 0.01V and 0.001A accuracy, which is essential when working with sensitive microcontrollers or 3.3V logic. Workflow and Safety FeaturesOutput Enable/Disable Button: This is a major workflow improvement. It allows you to set your parameters and verify them on the display before actually sending power to your load, preventing accidental overvoltage damage to your components.Overcurrent Protection (OCP): The built-in alarm and automatic output shutoff provide a critical safety net when testing new circuits for shorts.USB Fast Charging: The inclusion of an 18W USB port is a convenient addition for keeping mobile devices or USB-powered peripherals charged without cluttering the bench with extra adapters.Compact Bench FootprintMeasuring approximately 7.5" x 3.5" x 5.8" and weighing under 2.5 pounds, this unit is remarkably portable. It saves valuable space in a crowded rack or electronics station, making it easy to integrate alongside an oscilloscope and soldering station.The "Leads" FactorWhile the performance and technical features are excellent for the price point, the physical design is strictly functional. The unit does not include built-in hangers or integrated storage for the test leads when they are not in use. While this can lead to some bench clutter, it is a common trade-off in budget-friendly "switching" power supplies. For a cleaner setup, many users find that adding a small magnetic hook or 3-D printed hanger to the side of their bench is an easy way to address this.Final VerdictIf you are looking for a high-precision, digital-entry power supply that prioritizes accuracy and safety over industrial "frills," this unit is an outstanding value. It delivers consistent, reliable power for a wide range of electronics applications, and its small form factor is perfect for any modern workstation. You truly get a lot of technical performance for what you pay for.
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Reviewed in the United States on April 28, 2026 by Matthew VanDruff
Great affordable test bench power supply
Size: 30V 10A
Color: Black
This item works really well. It is a great affordable work bench power supply. It's incredibly straightforward to use, and is easy to connect to. The power provided has been stable in the times that I've used it, so I like this device.
Reviewed in the United States on July 31, 2026 by Joshua Delaney
Nice supply!
Size: 30V 10A
Color: Black
I like the fact that you need to enable the supply. This is a feature that might help to prevent your project to go up into flames, hi, hi. The display will show the selected voltage before you apply it to your device.
Reviewed in the United States on July 19, 2026 by Oldguy
Very nice and I like it...one little complaint
Size: 30V 10A
Color: Black
So far this power supply seems really nice. I like the features and user-interface. The only thing I don't like is the slow response time to changing the voltage or when powering it off. When you lower the voltage, or power it off, it is very slow to ramp down. It just slowly decreases in voltage, which could be an issue in some cases. But for my use cases, I do like it. I may even get one for a family member. For the price, there seems to be good value here.
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Reviewed in the United States on July 1, 2026 by Lance_big_daddy