Top 10 Best Variable Power Supply Reviews and Buying Guide 2022

Finding the best variable power supply can be troublesome among numerous brands and models. Also, most of them may not fulfill the primary needs or application criteria of the relevant product. But our research maintained and focused on a few issues and quality in our best variable power supply review, including user-friendly features, excellent quality, appreciable performance, all-around features, enhanced lifespan, and value for money. You will be happy to purchase each item as we checked the product’s performance to pricing ratio.

Our Top Rated Best Variable Power Supply For 2022

You can get numerous models of similar products dedicated to multiple users like the variable power supply. Our selection of top variable power supply is made after comparing 20+ products to match user requirements. These products are superbly performing, practical, and sturdy for individual purposes.

Rank Product Name Score
Sale1
Kungber DC Power Supply Variable, 30V 10A Adjustable Switching Regulated DC Bench Linear Power Supply with 4-Digits LED Power Display 5V/2A USB Output, Coarse and Fine Adjustments with Alligator Leads
Kungber DC Power Supply Variable, 30V 10A Adjustable Switching Regulated DC Bench Linear Power Supply with 4-Digits LED Power Display 5V/2A USB Output, Coarse and Fine Adjustments with Alligator Leads
9.1/10
Sale2
DC Power Supply Variable, 30V 10A Bench Power Supply with 4-Digits LED Display, USB Interface, Adjustable Regulated Switching Power Supply with Encoder Adjustment Knob, Output Enable/Disable Button
DC Power Supply Variable, 30V 10A Bench Power Supply with 4-Digits LED Display, USB Interface, Adjustable Regulated Switching Power Supply with Encoder Adjustment Knob, Output Enable/Disable Button
8.2/10
Sale3
DC Power Supply Variable,0-30 V / 0-10 A LW-K3010D Adjustable Switching Regulated Power Supply Digital,with Alligator Leads US Power Cord Used for Spectrophotometer and lab Equipment Repair
DC Power Supply Variable,0-30 V / 0-10 A LW-K3010D Adjustable Switching Regulated Power Supply Digital,with Alligator Leads US Power Cord Used for Spectrophotometer and lab Equipment Repair
9.9/10
4
Tekpower TP-3005D-3 Digital Variable Triple Outputs Linear-Type DC Power Supply, 0-30 Volts @ 0-5 Amps
Tekpower TP-3005D-3 Digital Variable Triple Outputs Linear-Type DC Power Supply, 0-30 Volts @ 0-5 Amps
9/10
5
DC Power Supply Variable 30V 10A, Eventek Adjustable Switching DC Regulated Bench Power Supply with 4-Digits LED Display, USB Interface, Alligator Cord/Test Lines (30V 10A, Black)
DC Power Supply Variable 30V 10A, Eventek Adjustable Switching DC Regulated Bench Power Supply with 4-Digits LED Display, USB Interface, Alligator Cord/Test Lines (30V 10A, Black)
9.4/10
6
SHNITPWR 3V ~ 24V 3A 72W Power Supply Adjustable DC 3V 5V 6V 9V 12V 15V 16V 18V 19V 20V 24V Variable Universal AC/DC Adapter 100V-240V AC to DC Converter with 14 Tips 5.5x2.5mm 4.0x1.7mm 3.5x1.35mm
SHNITPWR 3V ~ 24V 3A 72W Power Supply Adjustable DC 3V 5V 6V 9V 12V 15V 16V 18V 19V 20V 24V Variable Universal AC/DC Adapter 100V-240V AC to DC Converter with 14 Tips 5.5x2.5mm 4.0x1.7mm 3.5x1.35mm
8.2/10
Sale7
DC Power Supply Variable, Adjustable Switching Regulated Power Supply (0-30 V 0-10 A) with 4-Digits LED Display, 5V/3.6A USB Quick-Charge Interface, Short Circuit Alarm, Coarse and Fine Adjustments
DC Power Supply Variable, Adjustable Switching Regulated Power Supply (0-30 V 0-10 A) with 4-Digits LED Display, 5V/3.6A USB Quick-Charge Interface, Short Circuit Alarm, Coarse and Fine Adjustments
9.5/10
8
ITECH 150V/10A/600W Wide-Range DC Programmable Power Supply Variable Lab Power Supply Switching Regulated IT6953A
ITECH 150V/10A/600W Wide-Range DC Programmable Power Supply Variable Lab Power Supply Switching Regulated IT6953A
8.1/10
Sale9
DC Bench Power Supply Variable 30V 10A, LONGWEI 4-Digit Large Display Adjustable Switching Regulated Power Supply with USB Interface(30V 10A Black)
DC Bench Power Supply Variable 30V 10A, LONGWEI 4-Digit Large Display Adjustable Switching Regulated Power Supply with USB Interface(30V 10A Black)
9.2/10
Sale10
DC Power Supply Variable, Bench Power Supply with Output Switch, Short Circuit Alarm, Adjustable Switching Regulated Power Supply 30V 10A with 4-Digits LED Power Display, USB Quick-Charge Interface
DC Power Supply Variable, Bench Power Supply with Output Switch, Short Circuit Alarm, Adjustable Switching Regulated Power Supply 30V 10A with 4-Digits LED Power Display, USB Quick-Charge Interface
8.2/10

Sale1 Kungber DC Power Supply Variable, 30V 10A Adjustable Switching Regulated DC Bench Linear Power Supply with 4-Digits LED Power Display 5V/2A USB Output, Coarse and Fine Adjustments with Alligator Leads

  • High Precision with 4-Digit and Power Display: Kungber 30V 10A DC benchtop power supply is a professional power supply regulation device that has a high resolution of 0.01V and 0.01A. You can easily tune it within 0-30V and 0-10A. The backlit 4-digit LED display provides a more accurate readout for the voltage and current value, visible easily even in the low-light conditions.
  • Constant Voltage (C.V.) & Current (C.C.) Mode Automatic Conversion: Easy to dial in the desired voltage and current with the coarse and fine adjustment knob. The constant voltage/current mode can automatically switch with load changes. The conversion of constant voltage and constant current is indicated by the LED display on the front panel.
  • Compact and Various Application: This DC power supply is less than 3 lb and measures only 9.5 x 3.4 x 6.1 inches, applies for laboratory, school, repair, electrolyzation, electroplate, brush plating, lamp test, aging testing, battery charge, home DIY and other requirements. 5V/2A USB Interface could charge your cellphone and provide power for the device which you want to repair, no worry about running out of power.
  • Reliable and Safety: Many safety measures are adopt in Kungber DC bench power supply- Grounding wire, Leakage protection, Thermal protection, Voltage overload, Power overload and Short-circuit protection. Kungber power supply use premium electronic components, provide reliable working status and prolong the life of product effectively. When the working temperature is more than 122℉/50℃,the intelligent thermal protection will active the cooling fan to lower the temperature according to the load.
  • What You Get - 1 x Kungber SPS3010 Variable DC Power Supply, 1 set of Output Power Cords , 1x Input Power Cord, 1 x User Manual, and Technical Support from Kungber.

Sale2 DC Power Supply Variable, 30V 10A Bench Power Supply with 4-Digits LED Display, USB Interface, Adjustable Regulated Switching Power Supply with Encoder Adjustment Knob, Output Enable/Disable Button

  • 【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 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 variable power supply with a high-definition 4-digit display, which can display three values of voltage, current and power at the same time. The data is accurate to 0.01V and 0.001A. The bright white digital display helps you to operate as usual in the dark, and you can adjust the brightness of the screen as needed.
  • 【Compact and Lightweight】The measures of the variable dc power supply is only 7.51*3.56*5.81inch and the weight is only 2.47 pounds, which saves more space on your workbench and is convenient for you to carry when you need it. NANKADF dc power supply is the best choice for beginners or professional electricians.

Sale3 DC Power Supply Variable,0-30 V / 0-10 A LW-K3010D Adjustable Switching Regulated Power Supply Digital,with Alligator Leads US Power Cord Used for Spectrophotometer and lab Equipment Repair

  • ◆【High Precision, Wide Range】LONGWEI DC power supply is a professional power supply regulation device that designed with crystal clear, backlit 3-digit LED display of voltage, current, and power. Precise accuracy: 00.1V and 0.01A. You can easily tune it within 0-30V and 0-10A. Very durable and easy to observe even in low light conditions.
  • ◆【High Quality with Essential Safety】Safety is our priority. Grounding wire, The power supply takes the function of limited flow protection, overpower protection, over temperature protection, voltage overload protection. greatly improving its working efficiency and lifespan!
  • ◆【Excellent Heat Dissipation】Equipped with a big fan controlled by intelligent temperature control sensor and multiple heat radiation grooves on both sides, Intelligent fan offers excellent heat dissipation effect, which reduces the noise and prolongs the life of product effectively.
  • ◆【Various Application】This one weighs less than 2kgs and measures only 2.7*8.6*6.3inches, Applies for laboratory, school, home, electronic repair DIY, aging test and other requirements thanks to complete test probes and output cable with alligator clips.
  • ◆【What You Get】1 x K3010D DC power supply, 1 x output power cord, 1 x Input power cord, 1 x test probes, 1 x User manual. (Buy Now Risk-Free with 30 days Free Of Return,we provide 12-Month after sale service, lifetime technical support. Please feel free to contact us if you have any concerns,we will reply to you to solve your problem in 24H.)

4 Tekpower TP-3005D-3 Digital Variable Triple Outputs Linear-Type DC Power Supply, 0-30 Volts @ 0-5 Amps

  • High precision DC regulated power supply with triple outputs, 0- 30 volts and 0-5 amps
  • Two operational modes: constant voltage and constant current
  • Cooling fan automatic activation by built-in thermo-sensor
  • Back-lit LCD Display with a 0.1V and 0.01A resolution
  • 1-year warranty

5 DC Power Supply Variable 30V 10A, Eventek Adjustable Switching DC Regulated Bench Power Supply with 4-Digits LED Display, USB Interface, Alligator Cord/Test Lines (30V 10A, Black)

  • Adjustable DC Power Supply:✅0-30 volts and 0-10 ampere output; Decimal point automatic carry & LED 4 digits display of voltage function displays. Display accuracy: 0.01V and 0.001A. Clearer visible readout for the voltage and current value, extremely durable, and easily visible even in low-light usage.
  • Constant Voltage and Current:✅Automatic conversion between C.C and C.V modes, which can stably output voltage or current; The independent adjustment knobs allow for a bit by bit adjustment of voltage and current data. The conversion between constant voltage and constant current is indicated by the LED display on the front panel.
  • Compact & 5V/2A USB Interface:✅This power supply features the latest flame-retardant material housing for lightweight and high performance while maximizing impact resistance for safety. 5V / 2A USB port provides power to charge your phone or the device you want to repair without worrying about running out of power.
  • Multiple Protection Functions:✅Intelligent temperature adjustment function with an integrated thermal sensor can effectively reduce the temperature during operation, effectively reduce noise. The power supply is durable and compact. Multiple Protections include boundary current protection, thermal protection, voltage overload protection, short circuit protection, Overpower.
  • Switching Power Supply Design:✅Eventek bench power supply are FCC certified, adopts switching power supply design, higher conversion efficiency than linear power supplies and and smaller and lighter, the weight is only 20%-30% of the linear power supply. We provide 24 months after-sales service and warranty. If you have any questions about our products, please feel free to contact us.

6 SHNITPWR 3V ~ 24V 3A 72W Power Supply Adjustable DC 3V 5V 6V 9V 12V 15V 16V 18V 19V 20V 24V Variable Universal AC/DC Adapter 100V-240V AC to DC Converter with 14 Tips 5.5x2.5mm 4.0x1.7mm 3.5x1.35mm

  • Input: AC 100~240V, 50/60Hz ; Output: DC 3~24V Adjustable, Max 3A 72W ; It can supply with any voltage between 3~24V,such as 3V 4V 4.5V 5V 5.5V 6V 9V 12V 14V 15V 19V 20V 24V, etc and any amp less than 3A, such as 300mA, 500mA,1A, 1.5A, 2A, 2.5A, 3A. LCD display will show the output voltage, in case that wrong voltage regulation damage your device.
  • It comes with an original 5.5x2.5mm tip and 14pcs frequently used tips: 6.5x4.4mm+Pin, 5.5x2.1mm, 5.5x3.0mm+Pin, 5.0x2.5mm, 6.3x3.0mm, 5.5x1.7mm, 4.8x1.7mm, 4.0x1.7mm, 3.5x1.35mm, 3.0x1.1mm, 2.5x0.7mm, Micro-USB, Type-C and DC terminal connector. You can screw wires onto it easily, perfect for DIY projects.
  • The 72W all-in-one multipurpose AC/DC adapter fit for many 3~24V small household electronics such as LED strips, under-cabinet light, TV Box, smart speaks, wireless routers, essential oil diffuser humidifier, USB fan, Wifi camera, USB Hub, hard disk box, DC motor, DC pump, digital photo frame, DVR NVR surveillance system etc.
  • Built-in multiple safety protection systems. Automatic over voltage cut-off, over current cut-off, over temperature cut-off, short circuit cut-off. We focus on producing premium quality and safety power adapters. No noise, no spontaneous combustion, no explosion, no fire hazard, safe to use. 6ft long power cable makes it convenient to use.
  • Please choose correct voltage before plug it to your device. Wrong voltage may damage your device. We recommend to use less than 80% of the full load. We always stand behind our products. If there is any issue, please feel free to contact us. We have 30 days money back guarantee, 18 months exchange.

Sale7 DC Power Supply Variable, Adjustable Switching Regulated Power Supply (0-30 V 0-10 A) with 4-Digits LED Display, 5V/3.6A USB Quick-Charge Interface, Short Circuit Alarm, Coarse and Fine Adjustments

  • 【Automatic Power Calculation】 Different from other dc power supplies, WANPTEK DPS3010U dc power supply can automatically calculate the power value according to the voltage and current, but also can simultaneously display the 4-digit voltage, current and power values, numerical accuracy of 0.01V and 0.001A.
  • 【5V/3.6A USB Interface】The variable power supply has built-in fast charging protocol identification chip that supports USB fast charging function, which is different from the ordinary USB charging interface in that it has a 5V/3.6A output that can quickly charge your mobile phones and or other devices or be used to charge the device to be repaired.
  • 【Short Circuit Alarm】In order to improve the safety of the dc power supply and prolonging its service life, we have designed a short circuit alarm for the dc power supply. When a short circuit occurs, the variable DC power supply will stop output and send out an alarm to remind you. Bench power supply also have safety protections such as overvoltage, overcurrent, overheating and overload.
  • 【Wide Applications】The adjustable power supply features an intelligent temperature-controlled fan and heat sink for excellent heat dissipation and is especially suitable for laboratory, electronic repair DIY, communication equipment maintenance, products line, scientific research and teaching units.
  • 【Packaging and After-Sales】1 x power host, 1 x output power cord, 1 x input power cord, 1 x user manual, We provide lifetime technical support. If you are not satisfied with the product you received, please feel free to contact us.

8 ITECH 150V/10A/600W Wide-Range DC Programmable Power Supply Variable Lab Power Supply Switching Regulated IT6953A

  • 【Lab DC Power Supply】0~150V / 0~10A / 0~600W; Resolution: 1mV/1mA. High accuracy and high resolution, Low ripple and low noise. You can switch the display between setting value and actual value.
  • 【List Function】You can use the List Function to make various output change sequences consisting of multiple steps, set single-step voltage, single-step current, single-step delay time, repeat times and save list sequence file. After the power supply receive a trigger signal, it will begin to work according to the sequence steps you've edited. This function facilitates your testing, saves your time and improves your work efficiency.
  • 【Remote Sense Function】Remote sense can adjusted the output voltage of the device under test. This feature allows to compensate the voltage drop on the wire between the front panel terminals of the power supply and the device under test. This function can improve test accuracy, ideal for electronics R&D.
  • 【Memory Function】You can save some frequently used parameters in the power supply's memory. This function can make the operations more convenient. You can save and recall parameters quickly.
  • 【Package Contents】Lab Power Supply x 1, USB Cable x 1, Power Cord x 1, Ex-factory Test Report x 1, Software x 1 ( Notice: The red and black test line is optional accessories, not standard accessories, you can buy it in ITECH Electronic store)
  • 【100% Customer Satisfaction】Every dc power supply has undergone precision test, aging test, stability test and other multiple tests before leaving the factory, we guarantee its quality. If there is a problem with the device, please contact our technical support. One year warranty, 180 days extended warranty for product registration on the official website.

Sale9 DC Bench Power Supply Variable 30V 10A, LONGWEI 4-Digit Large Display Adjustable Switching Regulated Power Supply with USB Interface(30V 10A Black)

  • 【Automatic Power Calculation】 Different from other dc power supplies, LONGWEI PS-3010DF bench power supply can automatically calculate the power value according to the voltage and current, but also can simultaneously display the 4-digit voltage, current and power values, numerical accuracy of 0.01V and 0.01A.
  • 【5V/2A USB Interface & The design with Elastic Handle】This adjustable power supply could charge the device which you want to repair. It also features a large display that makes it easy and accurate to read voltages and currents. In addition, the design with Portable and lightweight could help you to carry it easily.
  • 【Constant Voltage & Constant Current Operation Mode】The easy-to-use rotary knob of coarse and fine could adjust the data of voltage and current digit by digit, which allows you to set the desired output resolution quickly and easily in 30V 10A.
  • 【Multiple Protections】This bench power supply provides overvoltage, overcurrent, overtemperature, overload, and short circuit to protect your device, prolong the service life of the dc power supply. In addition, it also has multiple heat radiation grooves on both sides, provides the cooling & exhaust fan protection
  • 【Various Application】This one weighs less than 3kgs and measures only 11.2 x 5 x 5.7 inches, Applies for laboratory, school, home, electronic repair DIY, aging test and other requirements .(Buy Now Risk-Free with 30 days Free Of Return,we provide 12-Month after sale service, lifetime technical support. Please feel free to contact us if you have any concerns,we will reply to you to solve your problem in 24H.)

Sale10 DC Power Supply Variable, Bench Power Supply with Output Switch, Short Circuit Alarm, Adjustable Switching Regulated Power Supply 30V 10A with 4-Digits LED Power Display, USB Quick-Charge Interface

Sale10
  • 【Highly Accurate Encoder Adjustment】 Just press the voltage or current encoder knob of the DC power supply to switch between each digit, and then turn the knob to set each digit in the range of 0-9, you can directly and accurately set the voltage or current you want. It is more precise and convenient than traditional knobs.
  • 【Output Switch Control】 In the process of using the variable power supply, you can adjust the voltage and current you need by pressing the output button at any time. This design can prevent you from damaging the appliance because you forget to disconnect the output. Effectively improve your experiment efficiency.
  • 【Automatic Power Calculation】 The bench power supply will automatically calculate the power based on the voltage and current, and display the voltage, current and power on the high-definition four-digit digital display. The accuracy is 0.01V, 0.001A. The bright digital display allows you to use the bench power supply in a dim environment.
  • 【Short Circuit Alarm】 When the load equipment fails and short-circuits, the adjustable dc power supply will emit a buzzer alarm. Prevent excessive output current from damaging the load equipment. In addition, it has multiple protections, such as grounding wire, leakage protection, thermal protection, voltage overload, power supply overload, etc.
  • 【Packaging and After-Sales】 1 x Wanptek DC Power Supply, 1 x Output Power Cord, 1x Input Power Cord, 1 x User Manual. The variable dc power supply size is 7.48*3.54*5.90inch, Weight is 2.46lb. If you have any technical questions about our power supply, please do not hesitate to contact us.

Buying Guide of Best Variable Power Supply

Having prior knowledge of the product is always essential when you are in a variable power supply selection. This knowledge may contain features, pros and cons, and other performance controlling factors. Thus, we suggest you know the pricing level of the product compared to its usefulness for a happy purchase.

Without proper research and comparison, you alone may waste your valuable time. But we have already completed the study and comparison to help you save time for other chores. You can buy the right variable power supply within the shortest possible time without losing the performance selected from our list.

The Suitable Brand

Check out the manufacturer’s reputation in the current market before buying the quality variable power supply. The desired best variable power supply will be efficient if you discover everything trustworthy and user-friendly. So, you can compare brands and read user reviews of the product for clarification. In this way, you may also learn the during and after-sales services.

Usually, high-performing products may cost you more money. But extra investment on that product may ensure you get the best performance and after-sales service. However, some manufacturers can be new to the market with a short history, except for the thoughts. They can also offer their best to compete and win the market.

Practical Features:

This is the next thing to look at when buying a variable power supply. Always try to match the features you want with the selected product. Therefore, some products may miss a few features, but still, they can be efficient for your project. Our suggestion is to look for the top or mandatory features of the multiple products. Then, you can compare and select the specific product having the most features you want.

It is better to know some generic features of most products. But you may also prefer extra or unique features for better satisfaction. Thus, we have focused on top practical features in this review list with correct details. Now, save your time and enjoy buying the product.

Top Benefits and Drawbacks

It is pretty impossible to get a 100% perfect product. It means your selected product may contain both positive and critical aspects together. So, keep the top benefits in mind and justify that they will fulfill your variable power supply needs. Alternatively, the product flaws may give an idea about its value for money in real-time applications.

Check out user reviews on different stores like Amazon, social networks, user forums, and the manufacturer website. It may clarify the top pros and cons for necessary product comparison. In this case, we are already ahead of reviewing them. We are not suggesting doing massive works; look at our best variable power supply pros and cons for the best compatibility.

Pricing:

Price can control the interest of a user or buyer to buy the respective product. It can determine how many features and performing factors of the product. Again, it can be changeable depending on multiple facts like brand value, topmost features, how they function, and life expectancy. Remember that you should pay more to get a product from a famous manufacturer.

In some cases, new brands offer their products at an attractive price. But you should always compare them with other similar products from different brands. It ensures you are spending well for the most effective outcome. It is beneficial to set and stick to a possible budget and buy the product within that budget.

Performance and Durability:

Performance indicates the compatibility of the product with your applications. Durability is another thing to consider for justifying your investment. You should look at both performance and durability of the respective product.

Spending a lot of money and getting an ineffective result from the product can be horrifying. A product should always perform better to meet the expectations. Again, the material quality and types may also differentiate the product prices. Sometimes the product may meet or exceed traditional product standards for best return or benefit on investment. Likewise, the shorter lifespan than expectation also can be a loss of investment.

Irrespective of user reviews, you can find many ways to know your desired variable power supply’s performance and durability. You should try to see the source of materials used in producing the product. Indeed, the best product is constructed from premium, long-lasting, and industry-leading materials.

Warranty and After-sales Service:

Warranty and after-sales service are very much helpful during any emergencies. We suggest you read the terms and conditions of serving the manufacturer or the seller after and before the purchase.

It is not easy to say your product will last forever. So, inquire if the manufacturer is allowing any warranty or after-sale services upon the purchase. Some products may require repairing services which the manufacturer may allow sometimes. In this case, you may check the user reviews about the manufacturer’s after-sales service. The manufacturers often offer a 6-24+ months warranty on the desired product. Some may offer free or slightly paid repair services, including home repair services. So, read all the terms and conditions well or face a loss after buying the product.

Final Words

Now, we have concluded our best variable power supply review. We expect our study can help you buy the product matching your needs. Here, we have included a good explanation of applications, features, user reviews, pros, and cons so that you get top-quality products.

Please, feel free to share what product has caught your eye. We hope you will buy any of our selected items as we have already proved why they are best. Indeed, buyers are craving to buy them. Spending time on other products in confusion may make you delay or miss the right purchase. So, make your life easier by picking the right product from our list faster.

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