The 10 Best DC Power Supplies

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This wiki has been updated 17 times since it was first published in November of 2018. Whether you're a hobbyist looking to send some juice to a CB radio or computer system, or you work in a professional lab that has specific power requirements, the DC supplies on our list can provide you with all the clean, reliable energy you need. We've included models suitable for a range of applications, ranked here by their total output, noise levels, dependability, and ease of use. When users buy our independently chosen editorial recommendations, we may earn commissions to help fund the Wiki.

1. Korad KA6005D Variable Adjustable

2. Eventek 30V

3. Rigol DP832 Triple Output

Editor's Notes

February 10, 2021:

This update was partly about replacing older models for newer ones with newer components, more stable voltage and current, more efficient cooling systems and lower noise. It was also partly about replacing all analog models with digital ones, though in the end, I changed my mind and left in the Tekpower Analog Display TP30SWI for those who want a little ‘vintage flair’ – do note that it's just made to look that way, and is actually a relatively new model that was released in the past couple of years.

The Pyramid Universal Compact Bench was the only model with a non-variable output, and I’ve removed that option now because it was getting quite old. With the exception of the Tekpower Analog, all models in the updated list offer variable voltage and current. Some, like the Eventek 30V and Kungber Variable will even offer 2 sets of 2 knobs for coarse and fine voltage/current control, while others may integrate both levels of control into a single knob.

December 06, 2018:

For a relatively complicated category, the things that make a given model superior are simple: total watts, adjustability, and clean output. Models designed for laboratory use, like the two Korad units on our list or the Rigol DP832, are going to be the best options here, though some designed for hobbyists can get away with a little more noise in the signal and still be great investments.

4. Tekpower Analog Display TP30SWI

5. Korad KA3305D Precision Variable

6. Tekpower TP3005T Variable Linear

7. Dr. Meter 30V/5A DC Bench

8. Extech 382275 Switching Mode

9. Tacklife MDC01

This item has been flagged for editorial review and is not available.

10. Kungber Variable

Kaivaan Kermani
Last updated by Kaivaan Kermani

Kaivaan grew up in a little town called York in the north of England, though he was whisked off to sunny Jamaica at the age of 14, where he attended high school. After graduating, he returned to the UK to study electronic engineering at the University of Warwick, where he became the chief editor for the engineering society’s flagship magazine. A couple of uninspiring internships in engineering later however, and after some time spent soul-searching and traveling across Asia and East Africa, he he now lives and works in in Dubai.

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