Current limiting protects the circuit, and the ripple figure tells the rest · review
A popular 300 W switching supply with an encoder knob, an OCP button, an 18 W USB port and an intelligent charging mode, weighing 2.3 pounds.
About $60 for 300 W is the market norm now.
An encoder beats old potentiometers for fine settings.
For audio or RF work, use a linear supply.
Prices quoted in this text are dated readings and can differ from the live price in the buy box.
| Output | 0–30 V, 0–10 A, 300 W |
|---|---|
| Control | Precision encoder knob |
| Protection | OCP, thermal, overvoltage |
| USB | 18 W |
| Input | 115 V |
| Weight | 2.3 lb |
| Amazon ASIN | B08DJ1FDXV |
| EAN | 0711731587530 |
No, it is a switching supply.
Over-current protection: it stops the output if a short is detected.
Taken against the median of its own bench on this site — not against the whole of the maker market.
8.1/ 10
Our default supply.
workshop machines from the same category, at nearby prices. Only what all of them publish is shown: a column with holes compares nothing.
| Model | Price | Output | Control | USB | Weight |
|---|---|---|---|---|---|
| Kungber 30V 10A | $60 | 0–30 V, 0–10 A, 300 W | Precision encoder knob | 18 W | 2.3 lb |
| Hangell 30V 10A | $50 | 0–30 V, 0–10 A, 300 W | Coarse and fine encoder | 18 W USB and Type-C | 1.2 kg (2.6 lb) |
| Jesverty SPS-3010V | $50 | 0–32 V, 0–10 A | Coarse and fine encoder | A and C, 20 W | 1.53 kg (3.4 lb) |
| Jesverty SPS-12003V | $73 | 0–120 V, 0–3 A | Coarse and fine encoder | A and C, 20 W | 1.6 kg (3.5 lb) |
A hobbyist building and repairing electronics.
Specifications: the manufacturer sheet for maker machines and tools and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
Switching bench supply · 0–30 V, 0–10 A · coarse and fine encoder · output switch · 18 W USB and Type-C · short-circuit alarm
A 300 W switching supply with coarse and fine encoder adjustment, a short-circuit alarm, and USB-A and Type-C quick-charge ports.
Best for: A user who wants USB-C on a budget.
≈ $50
Switching supply · 0–32 V, 0–10 A · coarse and fine encoder · USB-A and USB-C 20 W · output button · OCP · 115/230 V
A 0–32 V, 10 A supply with coarse and fine encoder control, USB-A and USB-C at 20 W, and an output button, in a compact case.
Best for: A user who needs slightly more voltage.
≈ $50
High-voltage switching supply · 0–120 V, 0–3 A · coarse and fine encoder · USB-A and USB-C · 115/230 V
A high-voltage supply for work above 60 V: 0 to 120 V at 3 A, with coarse and fine encoder control and USB ports.
Best for: An experienced user testing high-voltage equipment.
≈ $73
