B&K Precision 1687B
#7 in Single outputFull review
A durable name-brand switching supply for service benches and 24 V equipment, with a warranty the import brands do not offer.
Amazon $408$408
36 V / 10 A360 W1
3.0/5
A low-cost programmable linear supply for hobby and repair benches that want PC control on a budget.
- 30 V / 5 AOutput
- 150 W (channels added)Power
- LinearType
- USB, RS232PC control
Check price at Amazon$155
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Linear output with low ripple for under $160
- Settable over-voltage and over-current trips protect the circuit under test
- USB and RS232 for PC control and logging
Cons
- No published warranty
- No LAN port and no documented SCPI command set
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 | KA3005P |
|---|---|
| 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 | USB, RS232 |
| Over-voltage protection | Yes |
| Over-current protection | Yes |
| Build | |
| Weight | 10.6 lb |
Alternatives in this type
Tekpower TP3005P
#8 in Single outputFull review
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Amazon $129.99$129.99
30 V / 5 A150 W1
NICE-POWER R-SPS3020 30V 20A
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