Bench DC Power Supply

Bench DC Power Supply furnishes stable & adjustable direct current for smooth device operation.
Original price was: $ 99.00.Current price is: $ 89.00.

What Is Variable DC Bench Power Supply

The DC bench power supply, also known as a DC bench top power supply, is designed to deliver a stable direct current (DC) voltage to electronic circuits and devices during development, testing, and troubleshooting processes. Unlike regular bench power supplies, ETOMMENS variable bench DC power supply allows users to precisely control the output voltage within a specified range, typically through the encoder knobs. This feature distinguishes it from other regular bench power supplies, offering flexibility and adaptability in various applications.

Features Of DC Bench Power Supply Variable

The variable bench power supply boasts adjustable output voltage, providing precision in electronic testing and development. Equipped with user-friendly controls, typically knobs or digital interfaces, it allows engineers and technicians to fine-tune and coarse-tune voltage within a specified range. These power supplies also often feature multiple safety protections such as overvoltage, overcurrent, overheating and overload for enhanced safety.

The bench top DC power supply typically offers dual operational modes, namely constant voltage and constant current. In the constant current mode, the power supply maintains the preset current despite variations in resistance. On the other hand, in constant voltage mode, the voltage remains steady regardless of resistance levels. These modes prove beneficial when testing a circuit while restricting the current from the power supply, potentially preventing damage to the circuitry in case of any issues.

In general, for swift troubleshooting, analysis, or validation of an electrical device, the ideal tool to employ is a variable DC bench power supply. It is a reliable and valuable lab power supply that offers controlled power as needed. If you'd like to purchase one, simply choose a DC power supply that suits your needs from our range of variable DC bench power supplies for sale.

What Can A Variable Bench Power Supply Be Used For

Design Validation

In design validation, the bench power supply variable is an essential tool. It provides a stable DC voltage source, allowing engineers to assess electronic circuits under different conditions. Precise voltage adjustments enable testing resilience and fine-tuning designs. This DC power supply proves indispensable for ensuring the functionality and reliability of electronic devices during the validation process.

Quality Testing

The DC benchtop power supply is critical for quality testing, offering reliable power delivery to circuits and confirming that components operate under precise conditions. It plays a vital role in verifying the functionality and performance of critical components, ensuring the overall quality and reliability of products before market release.

PCB Assembly Testing

A realiable adjustable DC bench power supply is helpful for PCB assembly testing, facilitating the provision of voltage and current to circuit boards for testing op-amps, transistors, and various electronic components. The precision of the variable bench power supply expedites both testing and assembly processes, ensuring consistent and flawless functionality of electronic circuits.

Bench Testing

Bench testing plays a pivotal role in the creation or repair of electronic devices. Ensuring the seamless operation of each component necessitates a variable bench dc power supply. With an ETOMMENS benchtop DC power supply, you can rest assured that every component is functioning as intended.

Types of DC Bench top Power Supplies

Single & Multi-channel Variable DC Bench Power Supply

As the name suggests, a single-channel bench power supply features a solitary controlled output, while a multi-channel benchtop power supply offers two or more output options. DC bench power supply dual output is particularly well-suited for applications involving both analog and digital circuitry, catering to devices that require diverse voltage inputs.

Linear & Switching Bench DC Power Supply Variable

Linear and Switching DC Bench Power Supply differ in design and applications. Bench power supply linear, known for low noise and precision, are suitable for applications requiring precise voltage regulation and low ripple. Switching bench power supply, with high-frequency switching, are more efficient but may introduce a bit of noise. Choose linear power supply for low-noise and precise regulation, while switching power supply is ideal for efficiency in power-demanding scenarios. Tailor your selection to the specific needs of your project for optimal performance.

How To Use A Variable Bench DC Power Supply

To effectively utilize an adjustable DC bench power supply, start by connecting it to a reliable power source, ensuring that the voltage matches the power supply's specifications. Once connected, use appropriate cables to link the output terminals of the power supply to the electronic device or circuit that requires power.

After establishing the connection, proceed to set the output voltage to the desired level using the voltage adjustment knob. It is advisable to start with a lower voltage setting to prevent potential damage to sensitive components. Additionally, if the power supply features a current limiting function, adjust the current limit to a value slightly higher than what the circuit requires. This helps protect the circuit from overcurrent.

With the voltage and current settings in place, toggle the output switch to turn on the power supply. Monitor the output using the display or indicators on the power supply, and carefully observe the behavior of the connected electronic device or circuit. This systematic approach ensures the safe and efficient use of a bench DC power supply for various applications.

How To Choose The Best DC Bench Power Supply


Stability refers to the ability of the power supply to maintain a consistent and reliable voltage output over time. It is essential for the accuracy and reliability of experiments. Prioritize a benchtop DC power supply with excellent stability to ensure reliable power delivery for your applications.


Accuracy in voltage and current output is essential. The best bench power supply provides accurate readings, minimizing the risk of errors in your tests. Check the specifications for voltage and current accuracy, and opt for a model that meets the requirements of your applications.

Response Time

The response time denotes the duration required for the device to ascend or descend to a specific voltage. Fast response time is vital for dynamic applications or sudden changes in load. Consider a variable bench power supply with quick response ensures prompt adjustments to fluctuations, maintaining stability.

Ripple and Noise

Ripple and noise can interfere with sensitive circuits. Choose a lab bench power supply with low ripple and noise specifications to minimize unwanted fluctuations in the output signal. This is particularly important for applications that require a stable power source.

Protection Function

Ensure that the DC bench power supply unit includes comprehensive protection features such as overvoltage, overcurrent, over-power, over-temperature, and short-circuit protection. These features are essential to safeguard both the power supply and connected devices, preventing potential damage in case of unexpected events or user errors.

Remote Control Function

Possessing a test bench power supply with remote control function can significantly boost work efficiency. The convenience of remote control empowers users to make real-time adjustments seamlessly, fostering a more streamlined and productive workflow.

In Conclusion

the variable DC bench power supply is a versatile tool for various applications such as design validation and quality testing. With precise control and practicalfeatures, our variable DC bench power supplies cater to diverse needs. Invest now in our reliable bench power supply kit for efficient and effective applications.