Compact Precision DC Bench Power Supply – 0–30V 0–3A with OVP/OCP Alarms & USB

This compact DC bench power supply is designed to deliver stable, accurate, and low-noise DC power for a wide range of testing and development tasks. Supporting constant voltage (CV) operation with controlled current limiting, it is suitable for electronics maintenance, PCB debugging, laboratory experiments, and production testing.

The unit includes user-selectable over-voltage and over-current protection. When abnormal conditions such as short circuits, overloads, or incorrect settings are detected, the power supply triggers an audible alarm and automatically disables the output to protect connected devices.

A high-resolution 4-digit LED display provides clear, real-time voltage and current readings, even in low-light environments. The output enable/disable switch allows voltage and current to be preset before energising the output, improving safety and workflow efficiency.

Designed with portability in mind, the power supply features a compact vertical bench design, front-mounted power switch, and shock-absorbing feet for stability. An integrated USB 5V output provides convenient auxiliary power for mobile devices, development boards, and test accessories. An intelligent temperature-controlled cooling fan ensures quiet operation under light loads and reliable thermal protection during extended use.

Key Features

• Adjustable DC output: 0–30V

• Output current: up to 3A

• Single-output bench power supply

• Over-Voltage Protection (OVP) with alarm and auto shutdown

• Over-Current Protection (OCP) with alarm and auto shutdown

• Short-circuit, over-temperature, and over-power protection

• Low ripple, stable DC output

• 4-digit backlit LED display

• Output ON/OFF control for safe setup

• USB 5V / 2A auxiliary output

• Intelligent temperature-controlled cooling fan

• Compact, lightweight vertical design

Typical Applications

• Electronics repair and diagnostics

• PCB debugging and prototyping

• Laboratory and school experiments

• Battery charging (with correct configuration)

• Electrolysis and electroplating

• Lamp testing and aging tests

• DIY electronics projects