10 Best Bench Power Supply 2026 in the United States

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 Rigol DP832A Programmable Linear DC Power Supply offers a versatile and powerful solution for various bench power supply needs. It features three channels with a maximum output range of 30V/3A for two channels and 5V/3A for the third, providing a total power of 195W. This range makes it suitable for a wide range of applications, from hobbyist projects to professional lab work. One of its strengths is the low output ripple and noise, ensuring stable and clean power delivery, important for sensitive electronics and testing environments.

The transient response time of under 50 μs is impressive, ensuring quick adjustments and stability during load changes. Additionally, the device includes standard over-voltage, over-current, and over-temperature protection, which enhances its safety and reliability. The 3.5-inch TFT display is clear and informative, aiding in easy monitoring and adjustments. The built-in voltage, current, and power measurements along with waveform display further add to its utility.

The multiple interfaces (USB, LAN, RS232) enhance its connectivity and control options, making it a flexible tool in both standalone and integrated setups. However, the weight of 9.15 kilograms might make it less portable, and its range of advanced functions may come with a learning curve for beginners. For those who need a reliable, feature-rich power supply with multiple outputs and robust performance, the Rigol DP832A is a solid choice. Its advanced functions and somewhat heavy design are factors to consider based on your specific needs and workspace setup.

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.