Shopping for the best adjustable power supply is about as tricky as finding your soulmate. You not only think about quality, price but also need to find where to buy adjustable power supply. Don’t worry any more! We spend many hours to review and compare adjustable power supply to make the short list for you. Let’s check which product is suitable with you.
Best adjustable power supply
![[Upgraded Version] SoulBay 30W Universal AC/DC Adapter Switching Power Supply with 8 Selectable Adapter Tips & Micro USB Plug, for 3V to 12V Household Electronics and LED Strip - 2000mA Max](https://images-na.ssl-images-amazon.com/images/I/51UOyUkeeqL.jpg)
1. DC Power Supply Adjustable (0-30 V 0-10 A), Eventek KPS3010D Variable Switching Regulated Digital Power Supply with Alligator Leads US Power Cord
Feature
DC Power Supply Adjustable: 0-30 volts and 0-10 amp outputs; the Back-lit LED display accuracy: 0.1 V and 0.01AConstant voltage and current operation mode (C.C and C.V. automatic conversion); Light weight with heavy Output
Intelligent temperature control with built-in thermo-sensor, effectively reduce noise and prolong the life of product
Multiple protections: limit current protection, thermal protection, voltage overload protection, short-circuit protection
Eventek DC Power Supplies are FCC certified, 30 Days Money Back 12 Months Limited Guarantee for you !
Description
The Eventek KPS series high precision DC power supply is specially designed for scientific research, product development, laboratories, schools and electronic production lines.
The output voltage and current are continuously adjustable at nominal value. Featuring high accuracy, reliability, perfect overload and short circuit protection circuit, they can be an ideal choice for the industry.
Operating conditions:
- Input voltage: AC110V/220V10% (switch selection), 50Hz/60Hz
- Operating environment: 32 - 104F (0 - 40C), and humidity: 90%
- Storage environment: temperature: 4F-140F(-20C~60C), and humidity: 80%
Specifications:
- Output voltage: DC 0-30V Continuous adjustable
- Output DC Current: 0V - 10A
- Overall efficiency: 89%
- Display resolution: voltage: 0.1V , current 0.1A
- Voltage and Current adjustment
- Voltage regulation: CV 0.01% + 3mV, CC < 0.2% + 6 mA
- Protection: High current limiting and cooling fan
- Load stabilization: CV 0.1% +1mV / CC 0.1% +3mA
- Ripple and noises: CV < 1 mV rms, CC < 3 mA, rms
- Cooling way: Intelligent temperature control fan. if the temperature is higher than 50C
- Dimension: 8.8x 3.2x 6.5 Inch
- Unit Weight: 3.2pounds
What You Get:
Eventek KPS3010D Power supply host x 1
Output power cord x 2
Input power cord x 1
User manual x 1
Notice:
Do not operate in humid environmentDo not operate in flammable and explosive environment
Keep the product surface clean and dry
2. Yescom 110V AC 30V 10A DC Power Supply Precision Variable Digital Adjustable Clip Cable
Feature
Durable steel caseConstant voltage and constant current operation mode (C.C and C.V. automatic conversion)
Multiple protections: over voltage (OVP), open circuit (OCP),over temperature (OTP)
Safe circuit design, high quality key components adopted, the power supply can be used in 24 hours with full load
Intelligent temperature control fan adjusts the speed according to the load situation, effectively reduce noise and prolong the life of fan
Description
Features:- Durable steel case
- Constant voltage and constant current operation mode (C.C and C.V. automatic conversion)
- Multiple protections: over voltage (OVP), open circuit (OCP),over temperature (OTP)
- Safe circuit design, high quality key components adopted, the power supply can be used in 24 hours with full load
- Intelligent temperature control fan adjusts the speed according to the load situation, effectively reduce noise and prolong the life of fan
Specifications:
- Input voltage: 110V10% 60Hz
- Output voltage: DC 0-30V Continuous adjustable
- Output current: DC 0-10A Continuous adjustable
- Display resolution: voltage: 0.1V , current 0.1A.
- Display precision: 1% 1digit
- Voltage stabilization: 0.05% +1mV
- Current stabilization: 0.1% +10mA
- Load stabilization: CV 0.1% +1mV / CC 0.1% +10mA
- Ripples and noises: CV10mV(RMS)/ CC20mA(RMS)
- Cooling way:Intelligent temperature control fan. if the temperature is higher than 40F, the fan is started, if less than 95F, the fan will stop which can reduce noise
- Working conditions: 14F to 104F Relative humidity < 80%
- Storage conditions: -4F to 176F Relative humidity < 80%
- Body Dimension(LxWxH): 10 1/4" x 5" x 5 7/8" (26x12.6x14.8cm)
- Power Supply: 110V AC
Package Included:
- 1x DC power supply
- 1x Power Cord
- 1x Test Lead Set
- 1x User Manual
3. DC Power Supply Variable,0-30 V 0-10 A 4-Digital LED Display, Precision Adjustable Switching Regulated Multifunctional Power Supply Digital with USB Interface, Disply with Output Power
Feature
Precision Variable DC Power Supply: variable voltage output: 0-30 volts, variable current output: 0-10 amp; 4-digit LED Display accuracy: 00.01 V and 00.01AWith USB interface 5V2A Display with Output PowerIntelligent Temperature Control: It's built-in cooling fan with thermo-sensor will keep the power supply cool, noise reduced and life prolonged.
Constant-Current & Constant-Voltage Operation Mode: The two operation modes will switchover automatically as the load changes. There are indicators of the two modes on the Display.
Featuring a high accuracy, reliability and perfect limit current protection, thermal protection, voltage overload protection. A grounding port designed onto the device for much more stable and secure protections.
Comes with 1pc Output Power Cord, 1pc Input Power Cord.2pc Test probesGreat choice for using in home, labs, and schools,repairing workshops etc.
Description
This serial single output switch power supply is a kind of DC regulated power supply with high efficiency and stability.
It can be acted both as constant voltage as well as constant current dc power supply.
For this serial power supply, it has perfect protection circuit, can be used in many areas.
Applications:
1.Charge batteries, PCB board manufacturing industry
2.LED products, motors and dc fans test,
3.Electrofacing, electrolyzation, electronic components aging
4.Laboratory , Electronic equipment , Automatic Test Equipment
5.All other occasions need to use DC Power Supply
Features:
1.USB interface 5V/2A, Power display window show.
2.Single phase, single output dc power supply
3.Constant voltage and constant current operation (C.C and C.V. automatic conversion)
4.Both current and voltage can be adjusted from 0 to rated value
5.4LED digital display 6.Intelligent temperature control fan to help power supply cooling fast
Specifications:
1. Rated working conditions and dimensions:
Output voltage: 0-30V
Output current: 0-10A
Voltage Display Accuracy0.5%;
Current Display Accuracy0.5%;
Input voltage: 220V10%@50Hz, or 110V10%@60Hz, manual switching
Working environment: Temperature: -10 C ~ 40 C Relative humidity: <80%
Storage conditions: Temperature: -20 C ~ 80 C Relative humidity: <70
2, power supply effect:
CV0.1%+10mV CC0.1%+10mA
3. Load effect:
CV0.1%+5mV CC0.1%+10mV
4, ripple and noise:
CV10mV r.m.s. CC20mA r.m.s.
5, display mode accuracy:
4-digit LED digital display, display accuracy 0.1% 1 word
What You Get:
Power supply host x 1
Output power cord x 1
Input power cord x 1
Test probes x2
Notice:
Do not operate in humid environment.
Do not operate in flammable and explosive environment.
Keep the product surface clean and dry.
4. DC Power Supply Variable, Eventek KPS305D Adjustable Switching Regulated Power Supply Digital, 0-30 V 0-5 A with Alligator Leads US Power Cord
Feature
DC Power Supply Adjustable: 0-30 volts and 0-5 amp outputs; the Back-lit LED display accuracy: 0.1 V and 0.01A , Could be used for electro etchingConstant voltage and current operation mode (C.C and C.V. automatic conversion); Light weight with heavy Output
Intelligent temperature control with built-in thermo-sensor, effectively reduce noise and prolong the life of product
Multiple protections: limit current protection, thermal protection, voltage overload protection, short-circuit protection
Eventek Power Supplys are FCC certified; 30 Days Money Back 12 Months Limited Guarantee for you !
Description
The Eventek KPS series high precision DC power supply is specially designed for scientific research, product development, laboratories, schools and electronic production lines.
Eventek KPS DC power supply could be used for electro etching
The output voltage and current are continuously adjustable at nominal value. Featuring high accuracy, reliability, perfect overload and short circuit protection circuit, they can be an ideal choice for the industry.
Operating conditions:
Specifications:
- Output voltage: DC 0-30V Continuous adjustable
- Output DC Current: 0V - 5A
- Overall efficiency: 89%
- Display resolution: voltage: 0.1V , current 0.01A
- Voltage and Current adjustment
- Voltage regulation: CV 0.1% + 3mV, CC < 0.5% + 6 mA
- Protection: High current limiting and cooling fan
- Load stabilization: CV 0.5% +1mV / CC 0.5% +3mA
- Ripple and noises: 0.5%V P-P
- Cooling way: Intelligent temperature control fan.
- Dimension: 8.8x 3.2x 6.5 Inch
- Unit Weight: 3.2pounds
What You Get:
Power supply host x 1
Output power cord x 2
Input power cord x 1
User manual x 1
Notice:
Do not operate in humid environmentDo not operate in flammable and explosive environment
Keep the product surface clean and dry
It has a switch to flip between 110v and 220v (when 220v,you get 24v max , and when 110v, you will get 30v)
The unit was set to 220VAC input so the output voltage (when powered w/ 120VAC) was mucked up.
Make sure to check it and if you are in the USA (or as applicable) set it to 120VAC.
5. DC Power Supply Variable,LongWei LW-3010D Adjustable Switching Regulated Power Supply Digital,0-30V 0-10A with Alligator Leads US Power Cord
Feature
High precision LED digital display, intuitive and obviousTemperature control intelligent fan, excellent heat dissipation effect, effectively prolong fan life and reduce noise
Adopt advanced technology, effectively reduce the weight of power supply, convenient power to move
Multiple protection functions, limited flow protection (OCP), overtemperature protection (OTP), overpower protection (OPP)
The plastic panel, more beautiful, the voltage, the current setting coarsely adjust the knob, make the setting more accurate
Description
LW-K3010D:
This serial single output switch power supply is a kind of DC regulated power supply with high efficiency and stability. It can be acted both as constant voltage as well as constant current dc power supply. For this serial power supply,it has perfect protection circuit, can be used in many areas.
Applications:
Charge batteries, PCB board manufacturing industry/motors, LED products, and dc fans test/electrofacing, electrolyzation, electronic components aging/laboratory, Electronic equipment, automatic Test Equipment/All other occasions need to use DC Power Supply .
Specifications:
Line Voltage100-240VAC,50Hz-60Hz;
Output voltage: 0-30V
Output current: 0-10A
Voltage Display Accuracy0.5%;
Current Display Accuracy0.5%;
Efficiency>85%;
Operating Ambient: -10C to + 60C/ 30%RH to 90% RH
Voltage Regulation
Load Regulation(10-100%) 50mV;
Line Regulation(200-240VAC) 20mV;
Ripple & Noise(P-P) 50mV;
Current Regulation
Load Regulation(10-100%) 20mA;
Line Regulation(200-240VAC) 20mA;
Ripple & Noise(P-P) 20mA;
What You Get:
Power supply host x 1
Output power cord x 1
Input power cord x 1
User manual x 1
Notice:
Do not operate in humid environment.
Do not operate in flammable and explosive environment.
Keep the product surface clean and dry.
6. Adjustable DC Power Voltage Converter AC 110V-220V to DC 0-48V Module Switching Power Supply Digital Display 480W Voltage Regulator Transformer Built in Cooling Fan
Feature
Input voltage range is AC110-220V, output voltage range is DC 0-48V adjustable, output current can't be adjusted and it is up to your load, maximum output current is 10A, so this item will not fit for your device with over 10A current.LED display shows you real-time voltage, which makes it more convenient for you to adjust voltage. Case Material: Metal; Main Color: Silver Tone.
Equipped with temperature control cooling fan: it will automatically operate when this power converter need to be cooled without any noise.
Protection Function: over load protection, over voltage protection, short circuit protection, this protection will protect your load well. NOTE: before using, please select the input voltage 110V/220V according to your local voltage, to avoid damaging, switch is at right side of the item.
Widely used in Industrial automation, Radio, Broadcasting, LED display, communications, Security cameras, Lighting, Computer.
Description
Parameters:
Input voltage: AC 110-220V 15%
Output: DC 0-48V 10A
Rated power: 480W
Wiring:
: Ground
N: Null wire
L: Live wire
V+: DC output +
V-: DC output -
Package includes:
1 x Switching Power Supply
Instructions for use:
The current is unregulated and max. is 10A. The actual current is decided by load.
Any devices below 10A current can use this product. Any devices above 10A current cannot use this product.
Note:
Before using, please select the input voltage 110V/220V according to your local voltage, to avoid damaging, switch is at right side of the item.
If use motor, fan and other inductive load, please pay attention to the load's maximum starting current parameter. This parameter shall not be higher than the power supply's max. current. Otherwise it may damage the power supply. Or allocate the soft starting protection circuit for the load to absorb the impact current.
7. UCTRONICS Numerical Control DC 6-55V to 0-50V 5A Step Down Stabilized Power Supply Constant Voltage Current Buck Power Converter Power Supply Adjustable Module
Feature
This DC 6-55V to 0-50V 5A step down stabilized power supply combine numerical control with analog integration. Its adjustable output range: Voltage is 0-50.00V, step by 0.01V; Current is 0-5.000A, step by 0.001AThis step down voltage regulator can store M0-M9 10 groups preset value when power-down. Keep pressing M1 or M2 more than 2s, the corresponding data group will be extracted and displayed on the right of the screen
The 1.44 in colorful LCD monitor can display the preset voltage, input voltage, output voltage, the preset current, output current, output power at the same time. On the output state remind area, you can monitor that the key is locked or not, output is normal or not, the state of constant voltage and constant current, the current data set prompt and output opens or not
There are four button-"M1", "M2", "SET" and "ON/OFF", and a coding potentiometer. Can be used for to set the output voltage and output current on the main display interface, set the data on the data setting interface, set the protection value, adjust the brightness of screen, extract Shortcut storage data group M1 or M2, etc.
Note: When the output of this step down voltage regulator is used for charging a battery or connect a capacitive load, there must be a diode in series with the output-anode, otherwise the regulator will be damaged
Description
Pattern Name: Numerical Control DC 6-55V to 0-50V 5A Step Down Stabilized Power SupplyFeatures:
Input voltage: 6-55V
Output voltage: 0V-50.00V
Output current: 0-5.000A
Output power: 0-250W
Weight: 113g
Size: 79 x 43 x 48mm
Cutting size: 71 x 39mm
Output voltage resolution: 0.01V
Output current resolution: 0.001A
Output Voltage accuracy: +/- (0.5% + 1 digit)
Output Current accuracy: +/- (0.5% + 2 digits)
Note: Input voltage must 1.1 times higher than the output voltage.
When large current circumstances, pay attention to heat elimination.
Wiring:
IN+: Input positive
IN-: Input negative
OUT+: Output positive
OUT-: Output negative
Note: Input voltage maximum is 55V, if input is greater than this limit may damage the meter.
Do not use the meter in AC power supply, and wiring should be exactly the same as the wiring diagram, or else it will cause damage.
Package Including:
1pcs Numerical Control DC 6-55V to 0-50V 5A Step Down Stabilized Power Supply
8. [Upgraded Version] SoulBay 30W Universal AC/DC Adapter Switching Power Supply with 8 Selectable Adapter Tips & Micro USB Plug, for 3V to 12V Household Electronics and LED Strip - 2000mA Max
Feature
Universal AC/DC Adapter - AC Input:100-240V 0.25A 50/60Hz, DC Output:3V/4.5V/5V/6V/7.5V/9V/12V. Advanced secure technique, with full PROTECTION of over Voltages/ over Current/ short Circuits/ over Temperature. [ BUY SoulBay NEW !!]Upgraded Version Power Supply - Made of Compact Material. Newly designed adapter plugs to make this adapter Plugged in More Easily, new 57.1 inches cable in length, adding a magnet ring and LED terminal connector. There is ALSO a Micro USB Plug so this item can also function as an adaptor to turn any USB cable into a charger, such as usb charging camera.
All-in-one Adapter - This 30w replacement ac adapter comes with 8 interchangeable tips, which makes it fits 95% of AC/DC home appliances, Such as 3V to 12V Household Electronics, Tablet PC, Scales, Routers, Speakers, LED Strip Lights, CCTV camera system, USB Charging Camera, and so on.
Multifunctional 30W Adapter - Variable voltage is easy to select, you can converts to different voltage with ease using the provided key. 5.5mm*2.1mm DC Power Cable Connector Plug, easy to connect and practical to use. Supporting DC 12V-2A or 12V-1.5A appliances.[Note: DC Plug Polarity: inner Positive(+), outer Negative(-), Polarity is Not reversible.]
Exactly What You Are Looking for - Reasonably priced, versatile adjustable charger, different sizes of output and different levels of voltage. Safe to operate, Handy to set up at the correct voltage and Easy to attach the adapter plugs. Any issue for the product, please keep free to Contact us before returning. WE ALWAYS STAND BEHIND and OFFER fantastic after-sale support!
Description
Features: Idear for power supply replacement adapter, upgrade and spare power needs.
New Cord, cable core made of copper, 5.5*2.1 mm turning fork attached on the cord + magnet ring to reduce the noise disturbance
The cable length has been increased to 57.1 inches.
Bran-new Adapter Plugs are More Flexible to keep it Plugged in.
This SoulBay adapter includes 8 DC tips which are compatible with most polular DC products, such as Digital Photo Frame, Pedals, Effects, Wireless Receivers, Printers, Game Consoles, Raspberry Pi 3, Security Product, Router, Digital Product, Small Home Electronics, etc..
Specification:
Efficiency: >80%(TYP)
USB Port: 5.0V 2.1A
8 Adapter Tips Spec.: 5.5*2.5mm, 5.5*2.1mm, 4.0*1.7mm,3.5*1.35mm, 3.0*1.1mm, 2.5*1.7mm, Micro USB-B plug, led terminal connector.
Package Weight: 205 gram ( 7.23 oz)
Package Dimension: 12x7.5x5.6 cm/ 4.72x2.95x2.2 inch
Cord Length: 145 cm( 57.1 inch/4.76 ft)
Instructions:
1.Connect the correct adapter tip and make sure that it's firmly attached to the dc input port of your device
2.Set the right DC output voltage. There are 7 options for you, DC 3V/4.5V/5V/6V/7.5V/9V/12V
3.Connect the adapter to the electrical socket
4.Now you are ready to power up your device!
Attention:
Not compatible with laptop or other over 30W high power equipments.
If you want to get 12V 2.0 A via the 8 DC tips, please don't use the USB port at the same time, or the current could not reach to 2.0A.
If there is any product quality issue, or not sure whether this item would work for you, please keep free to contact us
Package Included:
1x 30W universal power adapter
8 x DC tips
9. DC Power Supply Variable, Tacklife 4 digital LCD display (0-30V/0-5A) Switching DC Regulated Power Supply, Reverse polarity/high temperature protection, with 110V/115CM Alligator Leads
Feature
Adjustable High Precision DC Power Supply: Provide desired voltage from 0 to 30V and the current to limit up to 5A max, meet the needs of most people, ideal for small labs or the hobbyist at home4 Digits Readings With Back-lit LED Display:With a 0.01V and 0.01A resolution, 4 digits provide accurate and clearly visible readout for the voltage and current value, and are extremely durable and easily visible even in low-light usage
High-quality With Essential Safety: Grounding wire, thermal protection, voltage overload and short-circuit protection ensure the safety; The built-in fan reduce the operation noise, effectively prolong the life of product
Constant Voltage And Current Operation Mode: Easy to dial in the desired voltage with the encoded-controlled fine and coarse adjustment knob, can easily see the amperage and voltage change as circuit components are switched in and out
What You Get: 1 x MDC01 Power supply host, 1 x Output power cord , 1x Input power cord , 1 x User manual ,1 x Warranty Card(24 Month Warranty)
Description
Product description:
The Tacklife high precision DC power supply is specially designed for laboratories, schools and electronic production lines.The output voltage and current are continuously adjustable at nominal value. Featuring high accuracy, reliability, perfect overload and short circuit protection circuit, they can be an ideal choice for electronic maintenance and teaching units.
Feature:
1. Single output, single phase
2. 110V/220 +10% input voltage, dual-input voltage.
3. Output constant current and voltage adjustable
4. mA and A converted display controlled by one button.
5. Constant voltage and current operation model. C.V and C.C convert automatically
6. Current limitation protection
Specifications:
Input voltage: 220 V/110V10% 50/60Hz (setting switch at the back)
Output voltage: 0-30V
Output current: 0-5A
Relative humidity: <80%
Relative humidity: <70%
Constant voltage state:
Voltage stability: <0.01%+3mV
Load stability :< 0.01%+5mV
Ripple & noise : <1.0mVrms
Temperature coefficient: < 300PPM/0C
Constant current state:
Current stability: < 0.2%+3mA
Load stability :< 0.2%+3mA
Ripple & noise :< 3mArms
10. TekPower TP1540E DC Adjustable Switching Power Supply 15V 40A Digital Display
Feature
Output Voltage: 0- 15V0-40A Current Output
Front AUX output 5A max
Fuse Protection
1 Year USA warranty
Description
The TekPower TP1540E is a professional DC regulated power supply from TekPower. This is a highly stable, high quality switching power supply with its output continuously adjustable at 0-15V DC and 0-40A for main output on the back. There is also an Aux output with 5A max on the front. This model is specifically designed with low ripple and noise. The unit comes with a large LCD displays, providing accurate readout for the voltage and current values. It has a build in fuse protection and comes with basic 1 year USA warranty.Features & Specifications:
Adjustable outputs: 0-15V and 0-40A Variable controls for both current and voltage outputs, front AUX outputs is 5A max
Input voltage: 110V
Ripple noise: 100 mV
Protection: Overload and overheat protection
Environment: 0-40C, relative humidity < 90%
Size: 13 X 3.5 X 8.5 inches
Weight: 6 lbs
Warranty: 1 year
Package:
TP1540E Power Supply
User Manual
Warranty Registration Card