10 Best Bench Power Supply 2025 in the United States

The GW Instek PSU 6-200 is a bench power supply designed to deliver up to 6 volts and 200 amps, providing a substantial 1200 watts of power. This high current output is particularly useful for applications requiring heavy-duty power, such as testing automotive components, large batteries, or industrial electronics.

The physical size and weight indicate a sturdy build, typical of lab-grade equipment, but it might be bulky for small workbenches. This power supply is well-suited for users needing high current at a low voltage, especially in industrial or scientific environments. Those requiring multiple outputs, fine regulation, or detailed display feedback should verify further specifications before purchasing.

The SIGLENT SPD3303X DC Power Supply is designed for users who need a reliable and versatile bench power supply for various electronic projects. Its standout feature is the three independently controllable outputs, allowing you to power multiple devices simultaneously with different voltage and current settings. The main outputs offer a voltage range up to 30V and a current rating of 3A, which is quite sufficient for most applications. Additionally, the power supply gives superb resolution with 1mV and 1mA precision, making it ideal for sensitive projects where accuracy is crucial.

The TFT-LCD display is another highlight, providing clear visibility of both voltage and current with five and four digits, respectively. This makes it easy to monitor your settings at a glance. The programmable timer and waveform display functions add further flexibility, allowing for more advanced testing scenarios.

There are a few drawbacks to consider. The weight of the unit is on the lighter side at just 0.01 ounces, which might be a typo as most power supplies are heavier due to their internal components. This could lead to instability if not secured properly on a workbench. Additionally, while the outputs are isolated, some users may find the maximum output of 220 Watts limiting for more demanding applications. Lastly, the unit's dimensions (16 x 14 x 11 inches) can take up considerable space on your workbench, depending on your setup.

The SIGLENT SPD3303X is an excellent choice for hobbyists and professionals seeking a well-rounded bench power supply with programmable features and precise monitoring. Its limitations relate mainly to power output and physical size, but it serves its purpose effectively for most standard uses.

The B&k Precision DC Power Supply model 1900B is a single-channel, adjustable power supply that caters well to users requiring a reliable power source for various electronic applications. Its output voltage range of 1-16V and a substantial output current capacity of up to 60A make it suitable for tasks that demand high power. The adjustable output type allows for flexibility in different scenarios, which is a notable advantage for users needing precise control over their power supply settings.

It only offers one output, which could be limiting for users needing to power multiple devices simultaneously. The power rating of 960W is robust, ensuring it can handle demanding applications effectively. It operates within a voltage supply range of 100-120VAC, making it compatible with standard power outlets in many regions. The cooling method is air-based, which should be adequate for typical usage but might not be ideal in environments with heavy-duty continuous operation where more efficient cooling could be required.

Weighing 10 pounds, it is relatively manageable in terms of portability. For users who prioritize high current capacity and adjustable voltage in a single output configuration, this power supply is a solid choice, though it may not meet the needs of those requiring multiple outputs.