30V 5A Adjustable Lab Bench DC Power Supply
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Prices updated: 12 Oct 2026
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About this product
This 30 V, 5 A adjustable lab bench DC power supply uses coarse and fine knobs for precise voltage and current settings. It switches automatically between constant voltage and constant current modes and includes over-voltage, short-circuit, and over-temperature protection. It is suited to bench testing, repair work, and powering electronic projects.
Specifications
- Output voltage
- 0 – 30 V (coarse and fine adjustment)
- Output current
- 0 – 5 A (coarse and fine adjustment)
- Operating modes
- Constant voltage / constant current, automatic switching
- Protection
- Over-voltage (OVP), short-circuit, over-temperature (OTP)
Frequently asked questions
How do I set a current limit before connecting a load?
Short the output terminals with a test lead, set the desired voltage, then adjust the current knob until the constant current indicator lights. Remove the short and connect your circuit, so the supply limits the current if a fault occurs.
Can I use it as a battery charger for a bench test?
It can supply constant voltage or current, but a battery should be charged with the correct voltage and a current limit suited to that battery chemistry. Use a battery charger designed for that chemistry for regular charging, especially for lithium cells.
