A low-cost 60 V switcher for e-bike and 48 V battery work on a budget.
Amazon $89
A basic linear 30 V, 5 A bench supply for hobby electronics when PC control is not needed.
- 30 V / 5 AOutput
- 150 W (channels added)Power
- LinearType
- NonePC control
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
- Linear output with low ripple at a budget price
- Fine 1 mA current setting for small circuits
- No PC connection, so there is no logging or scripted control
- No published warranty or protection list
The Korad KD family
Every Korad KD model we rank, smallest first. Ratings compare each against its own type.
| Model | Output | Rating | Price |
|---|---|---|---|
| Korad KD3005D (this one) | 30 V / 5 A | 2.8/5 | $109.99 |
| Korad KD6005D | 60 V / 5 A | 2.9/5 | $204.99 |
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.
Specifications
| Model number | KD3005D |
|---|---|
| Output | |
| Type | Power supply |
| Regulation | Linear |
| Channels | 1 |
| Channel ratings | 30 V/5 A |
| Max voltage | 30 V |
| Max current | 5 A |
| Rated power | 150 W (channels added) |
| Ripple and noise | 2 mVrms |
| Precision | |
| Setting resolution | 10 mV / 1 mA |
| Readback resolution | 10 mV / 1 mA |
| Control | |
| PC interfaces | None |
| Build | |
| Weight | 9.4 lb |
Alternatives in this type
A programmable 20 V supply for production and test rigs that chain several units on RS485.
Amazon $546.12A simple linear 30 V, 5 A supply for beginners and repair benches on a tight budget.
Amazon $89.99Compare
Compare the Korad KD3005D with any other bench power supply →
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