DC Power Supply Variable 0-30V 0-5A 150W - Stable Bench PSU

In this review of the FNIRSI DPS-150, the bottom line is simple: this is a compact, programmable bench power supply for hobbyists and lab users who need a stable, low-ripple output and flexible connections. The unit stands out for its accurate 0.01 V and 0.001 A display, multiple input methods, and PC programmability, making it useful for repetitive bench setups or sensor work where precise voltage and current matter.

Key Features

• Stable output: Provides up to 30 V and 5 A with a 150 W limit, delivering steady power for a wide range of small electronics and test projects.
• High display resolution: The 4-digit IPS screen shows voltage to 0.01 V and current to 0.001 A so adjustments and readings are precise.
• Low ripple: Less than 20 mV power ripple reduces noise and helps protect precision electronics from voltage fluctuation.
• PC programmable: Six preset output parameter groups and PC control speed up repeated test setups and make it easier to switch between configurations.
• Diverse connections: Includes 4 mm banana heads, U-shaped terminals and fine copper wire options to match many different leads and devices.
• Built-in protections: Eight safety mechanisms such as overvoltage, overcurrent, short circuit and overheating protection help safeguard equipment.

Who It's For

This power supply is aimed at makers, electronics hobbyists and small lab users who need an affordable regulated supply with good display resolution and programmability for repeated test procedures. It works well for bench testing sensors, microcontroller projects and simple automotive electronics where steady low-noise power is required.

Those who need very high current beyond 5 A, an integrated battery charger, or rack-mount industrial supplies should look elsewhere; this model is optimized for precise bench use up to 150 W rather than heavy industrial distribution.

Pros & Cons

Pros

• Accurate digital readout and low ripple make it suitable for sensitive electronics and sensor testing.
• PC programmable presets and multiple input modes speed up repetitive testing and configuration changes.
• Multiple output connection types increase compatibility with test leads and custom wiring.
• Comprehensive safety protections provide peace of mind during bench work.

Cons

• Maximum 5 A output limits use for higher current projects or larger motors.
• The compact design and bench focus mean it is not intended for heavy industrial rack installations.

Specifications

Maximum Voltage	30 V
Maximum Current	5 A
Maximum Power	150 W
Display Resolution	Voltage 0.01 V, Current 0.001 A
Ripple	<20 mV
Input Modes	PC, QC and DC input
Connections	4 mm banana, U-shaped terminals, fine copper wires

Our Verdict

The FNIRSI DPS-150 is a well-balanced bench power supply that offers precise control, low ripple and useful programmability at a reasonable value. Hobbyists and small labs that need accurate voltage and current control for sensor work, microcontrollers or light automotive testing will find it particularly useful, while users needing higher current or rack hardware should consider larger alternatives.

Frequently Asked Questions

Can the unit be preset for repeated tests?
Yes. The DPS-150 supports PC programmability and six preset output parameter groups to quickly recall voltage and current settings.

Is the output safe for sensitive electronics?
With <20 mV ripple and built-in protections like overvoltage and short circuit protection, it is well suited to protect many precision electronic devices.

What connection options are included?
The supply provides 4 mm banana heads, U-shaped terminals and fine copper wire connections to fit common test leads and wiring needs.