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Best DC Bench Power Supply, PS305 30V/5A 3 Digital LED Desktop Switching Variable Power Supply Voltage&Current Regulated Supply Power Source for Lab Repair,Electronic Tester, Power Calculator

3.9 3.9 out of 5 stars 46 ratings
Currently unavailable.
We don't know when or if this item will be back in stock.
  • √30V/5A DC Power Supply: Our bench power supply have 3 digital dual LED display 30 volt and 5 amp output power source, constant voltage and current indicator light from 0.01V and 0.01A resolution over the full range.
  • √Best Switching Power Supply: current and voltage tuning to regulated from coarse to fine conditions, and the cooling fan automatic activated by built-in thermo-sensor with low noise with prolong working life dc power source.
  • √Safety Protections Power Source: Featuring a high accuracy, reliability limit current protection, thermal protection, voltage overload protection and short-circuit protection. This desktop power supply designed with grounding port for more stable and secure to tester or repair your electronic workshops.
  • √Light Weight,Quite and Portable: 3 digital power supply calculator can easily readout the voltage and current value, more compact, lighter, easy to carry.It able to regulate the settings easily from coarse to fine control dc converter.
  • √Manufacturer's Warranty: Our dc power supply with CE certified, UL-listed power cord, 60 days money back with 24 months product guarantee customer service.The best power source for small labs or the electronic DIY hobbyist.
› See more product details

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 11.8 x 5 x 7.2 inches; 2.85 Pounds
  • Item model number ‏ : ‎ 3 Digital
  • Date First Available ‏ : ‎ October 25, 2017
  • Manufacturer ‏ : ‎ Pevono
  • ASIN ‏ : ‎ B076TMJB35
  • Customer Reviews:
    3.9 3.9 out of 5 stars 46 ratings

Product Description


Product Description:

Pevono PS305 series high precision DC bench power supply is designed for workshop maintenance and electronics tester and repair, product development, laboratories and DIY hobbyist and industrial users. This is one of the best power supply you can find on Amazon.
Both of the output voltage and current are can be continuously adjustable at nominal value. Featuring high accuracy supply power, this is definition of reliability, safety overload and short circuit protection circuit power source.

Technical Specifications:

Output voltage: DC 0-30V
Output dc power current: 0V - 5A
Overall efficiency: ≥95%
Display resolution voltage: 0.01V , current 0.01A　

General Information:

Dimension: 2.9*1.1*1.8 inch
Net weight: 1.8kg
Working temperature: 0~40°C
Relative humidity: ≤80%
Fuse:　F5AL, 250VAC

Voltage Regulations:

Regulation rate: ≤0.03%+1mV
Load regulation rate: ≤0.3%
Ripple and noise: ≤ 3Vrms(5Hz-1MHz)
Ripple and noise: <10Vp_p

Current Regulations:

Load regulation rate: ≤0.2%+5mA
Ripple and noise: ≤ 3Arms
Restore: ≤ 300 μ (with load of 50% regulation rate, 0.5A)

High Voltage:

Leak current: ≤ 1mA (with input 1500VAC/1s to ground)
Insulant resistance: ≥5MΩ (with input 500VDC/5s to ground)

Restore Conditions:

Temperature: -10°C~70°C
Relative humidity: ≤70%

What is in the package of this desktop power supply:

PS305 power supply device x 1
UL-listed power cord x 1
Alligator clip x 1
User manual x 1

Important information

Legal Disclaimer

<b>Safety Using Notice: </b> The bench power supply is intended for indoor electronics power source user only. It is very important to turn the power switch (110V/120V) at the panel to a correct position according to your local voltage standard. Do not open or repair the device or it will void the warranty. Do not use the power supply in a damp environment. Keep the power supply away from heat or water, magnetic field. Keep the power supply and all loose parts(if any)away from children, pets and unauthorized person. Don’t sharply bend, cut, extend, knot, step on or pull the cord but on the plug when disconnecting the power supply cables. When the device is damaged in any way, stop using it immediately. Use the spare parts with same specification as original one.

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Customer reviews

3.9 out of 5 stars
46 global ratings

Customers say

Customers like the functionality, power supply, and value of the product. They mention it works great for the price and is an ideal addition for any model railroader. However, some customers have mixed opinions on its accuracy.

AI-generated from the text of customer reviews

Select to learn more
FunctionalityPower supplyValue for moneyAccuracyInstruction quality
13 customers mention "Functionality"11 positive2 negative

Customers like the functionality of the product. They mention it's an excellent product, works great for the price, and is a nice little unit. Some say it's accurate and reliable.

"...I've used it to also charge sealed lead acid batteries, and it works beautifully for that as well...." Read more

"Delightful and useful power supply. I love the controlled current feature. Dead simple to use...." Read more

"Works great for the price, however it's not easy to understand how to set a constant current with it...." Read more

"These are pretty accurate and reliable...." Read more

4 customers mention "Power supply"4 positive0 negative

Customers like the power supply. They mention it's an ideal addition for any model railroader.

"Delightful and useful power supply. I love the controlled current feature. Dead simple to use...." Read more

"This power supply is an ideal addition for any model railroader on their bench or on their layout to power even their DCC Command Stations...." Read more

"Great Meter/Power supply..." Read more

"great power supply..." Read more

4 customers mention "Value for money"4 positive0 negative

Customers appreciate the value of the product.

"...Seems like a nice power supply for the money...." Read more

"Been looking for a reasonably priced power supply for my Model Train (DCC) layout. This is it!! Highly recomend" Read more

"Good Value..." Read more

"Great buy awesome value..." Read more

7 customers mention "Accuracy"4 positive3 negative

Customers have mixed opinions about the accuracy of the product. Some mention it's spot-on, while others say it's unreliable and grounded to the chassis poorly.

"...Three digits of precision. The readings closely match my TekPower multimeter. About the first half of this video is about the power supply." Read more

"...Very unreliable: if you do want to risk a purchase then be sure to double check the displayed readings with your own multimeter before use." Read more

"These are pretty accurate and reliable...." Read more

"Really enjoyed this item until it failed for no reason. Only used it about 8 times to power plc while I was testing programs...." Read more

3 customers mention "Instruction quality"0 positive3 negative

Customers are dissatisfied with the quality of the instructions for the product. They mention they're not well-written and not easy to understand how to set a constant current.

"Works great for the price, however it's not easy to understand how to set a constant current with it...." Read more

"Instructions are not the Best but after setting the Current, (Turn off First - then Jumper (short out) Red and Black Terminals)...." Read more

"Prompt delivery. Instructions not well written, didn't exactly match the product. Nothing that youtube couldn't fix though." Read more

Super Nice Unit for the Money!
5 out of 5 stars
Super Nice Unit for the Money!
I am super pleased with this unit. I've opened it up and thoroughly reviewed the guts and functions. Seems like a nice power supply for the money. I've used it on my bench powering guitar pedal circuits, and the noise was almost non-existent compared to a 9V battery, even though it's a switching power supply. I made a video review of it on my &#34;Guitologist&#34; YouTube channel. There are calibration pots on the inside of the unit, so as the unit ages and components inevitably drift, you'll be able to recalibrate. I've used it to also charge sealed lead acid batteries, and it works beautifully for that as well. This one will live on my bench for some time to come, I'm sure.
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Top reviews from the United States

Brad L.
5.0 out of 5 stars Super Nice Unit for the Money!
Reviewed in the United States on April 23, 2018
Verified Purchase
I am super pleased with this unit. I've opened it up and thoroughly reviewed the guts and functions. Seems like a nice power supply for the money. I've used it on my bench powering guitar pedal circuits, and the noise was almost non-existent compared to a 9V battery, even though it's a switching power supply. I made a video review of it on my "Guitologist" YouTube channel. There are calibration pots on the inside of the unit, so as the unit ages and components inevitably drift, you'll be able to recalibrate. I've used it to also charge sealed lead acid batteries, and it works beautifully for that as well. This one will live on my bench for some time to come, I'm sure.
Customer image
Brad L.
5.0 out of 5 stars Super Nice Unit for the Money!
Reviewed in the United States on April 23, 2018
I am super pleased with this unit. I've opened it up and thoroughly reviewed the guts and functions. Seems like a nice power supply for the money. I've used it on my bench powering guitar pedal circuits, and the noise was almost non-existent compared to a 9V battery, even though it's a switching power supply. I made a video review of it on my "Guitologist" YouTube channel. There are calibration pots on the inside of the unit, so as the unit ages and components inevitably drift, you'll be able to recalibrate. I've used it to also charge sealed lead acid batteries, and it works beautifully for that as well. This one will live on my bench for some time to come, I'm sure.
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6 people found this helpful
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David C. Casler
5.0 out of 5 stars Delightful and useful power supply
Reviewed in the United States on March 7, 2018
Verified Purchase
The media could not be loaded.
Delightful and useful power supply. I love the controlled current feature. Dead simple to use. Because of the current feature, if you short the output, it won't blow anything--it simply limits the current. Goes from zero to 30 volts DC, and from zero to 5 amperes. Three digits of precision. The readings closely match my TekPower multimeter. About the first half of this video is about the power supply.
4 people found this helpful
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Neil Siebenthal
4.0 out of 5 stars Hard to set constant current.
Reviewed in the United States on December 24, 2018
Verified Purchase
Works great for the price, however it's not easy to understand how to set a constant current with it. It does hold a constant voltage easy enough tho.
Edit:
Also if you do buy one, I suggest that you open it up before ever turning it on and putting some heat shrink on the Mains power connectors, they're bare and right next to the case.
2 people found this helpful
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Conrad
1.0 out of 5 stars Unreliable readings, and unable to adjust amps
Reviewed in the United States on June 25, 2018
Verified Purchase
The power supply was incapable of adjusting the amperage. Never displayed the correct amps, and wouldn't show any variation when "adjusted". I needed to use. My multimeter to properly measure the output from the power supply. Very unreliable: if you do want to risk a purchase then be sure to double check the displayed readings with your own multimeter before use.
5 people found this helpful
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superpie
5.0 out of 5 stars Great deal
Reviewed in the United States on February 12, 2020
Verified Purchase
These are pretty accurate and reliable. Generally it's a good idea to wait until after turning on the unit to connect it to something that needs to be powered, as with most power supplies there's a small spike during power-on. This is pretty close to what my multimeter reads and I don't worry about measuring it every time I use it with normal small electronics projects.
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Jason Creech
2.0 out of 5 stars Not reliable
Reviewed in the United States on December 26, 2018
Verified Purchase
Really enjoyed this item until it failed for no reason. Only used it about 8 times to power plc while I was testing programs. Now during power up the voltage starts out at 24 then starts counting down to 0. No output at all now.
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Johan van der Vyver
3.0 out of 5 stars Good for hobbyist that isn't afraid to DIY
Reviewed in the United States on May 11, 2018
Verified Purchase
Plenty of pictures here already so I won't waste too much time with that.
I believe that this low cost device is likely more suited to DIYer that is happy to open the device and rectify and small problems.

The device performs as expected. There is a slight spike when you turn the device on, so it is pretty important to have no load connected when you turn on the device.

The device had some high frequency noise that was fairly annoying. I drastically reduced it by hot glueing the transformers and main inductor.

I had some questionable soldering here and there but again, it was fairly straightforward to remedy.

Lastly I felt the grounding wiring was sub-par and improved it. It was grounded to the chassis, but not very well (painted part of metal with very small contact area).
14 people found this helpful
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K. E. Dixon
5.0 out of 5 stars Good Value
Reviewed in the United States on May 29, 2018
Verified Purchase
Instructions are not the Best but after setting the Current, (Turn off First - then Jumper (short out) Red and Black Terminals). Turn back on and adjust Coarse Current to say 1 amp. Then turn off, remove jumper wire, then turn back on. Should now be able to adjust voltage to the level desired. Nice little unit, small footprint and so far works great!
4 people found this helpful
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