Your Professional Dual Rail Power Supply Supplier
Topow Electronics is an innovation-driven and technology-powered enterprise specializing in power supply solutions.
Our primary product offerings include power adapters, photovoltaic inverters, and other related equipment.
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Telecom PSUThis 415W open frame power supply is a high-efficiency, dual-output Telecom PSU (Power Supply Unit) designed for demanding applications in telecommunications, industrial equipment, and networking devices. It provides stable and reliableread more
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Heavy-Duty Switching Power ModuleThe Heavy-Duty Switching Power Module is a high-efficiency, dual-output switching power supply designed for demanding industrial and networking applications. It delivers stable and reliable power with a main 52V/4.9A output and anread more
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Dual Channel Industrial Power BoardThe TPT130D5412A is a high-performance Dual Channel Industrial Power Board designed to provide stable and reliable dual-output power (54V/2.2A and 12V/1A). It is engineered for industrial automation, telecommunications, and control systemsread more
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250W Dual Output Power ModuleThe 250W Dual Output Power Module features advanced interleaved PFC and LLC resonant topology, delivering up to 91% efficiency (at 240VAC full load) across 90-264VAC input range. Certified to UL/IEC/EN 62368-1, CE, CB standards, itsread more
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Server-Grade Power Supply BoardThis Server-Grade Power Supply Board features advanced interleaved PFC and LLC resonant topology, delivering up to 91% efficiency (at 240VAC full load) across 100-240VAC input range. Certified to UL62368 and EN62368 standards, its dualread more
Why Choose Us
Quality Assurance
Topow's products undergo more than 10 rigorous testing procedures and are certified under ISO 9001 and ISO 14001 standards, ensuring superior reliability.
20+ Years of Experience
With over two decades of experience in power solutions, we have provided services to global companies and demonstrated proven expertise.
OEM/ODM Services
From initial design to mass production, we offer comprehensive, end-to-end solutions that are customized to meet your specific requirements.
Benefits of Dual Rail Power Supply

Our dual output bare board power supplies represent a leap in integration, providing two independently regulated voltage rails from a single, compact board. This product line is specifically designed for sophisticated systems where multiple sub-assemblies—such as analog and digital circuits, or a processor and its display—need to be powered simultaneously. It serves as a consolidated power hub, simplifying complex power architecture with intelligence and efficiency.
System-Level Integration & Space Saving: By consolidating the functionality of two power supplies into one unit, we offer a highly integrated and space-saving solution. This significantly reduces the component count on your main board, simplifies internal layout, and lowers overall assembly costs, enabling more compact and elegant end-product designs.
Enhanced Design Flexibility & Noise Isolation: Featuring independently controlled or fully isolated outputs, these boards prevent harmful noise interference (cross-talk) between sensitive circuits. This provides engineers with superior design flexibility, allowing them to power a noisy digital circuit (e.g., 3.3V) and a sensitive analog component (e.g., ±12V) side-by-side without compromise.
Despite their advanced design, our dual output boards are produced on automated, high-precision assembly lines. We have established scalable production capacity to flexibly accommodate orders ranging from prototype quantities to large-scale volume demands. Our manufacturing system is agile, ensuring consistent quality and reliable delivery schedules for these more complex power solutions.
Applications of Dual Rail Power Supply
Audio Equipment
Audio amplifiers, mixers, and other sound processing equipment rely on dual power supplies to handle audio signals that fluctuate above and below ground. This enables high-fidelity sound reproduction and minimizes distortion in audio applications.
Testing & Measurement Equipment
Instruments like oscilloscopes, multimeters, and signal generators require dual power supplies to provide the necessary voltage levels for accurate calibration and testing of electronic components and devices. This ensures reliable and precise measurements in various testing environments.
Medical Devices
Medical equipment such as electrocardiograms (ECGs), medical imaging systems, and diagnostic tools depend on dual power supplies for precise voltage control. This is crucial for accurate measurements and reliable operation in medical diagnostics and patient monitoring.
Communication Systems
Communication devices and circuits, including radio transmitters, receivers, and signal processing units, use dual power supplies to process complex signals with both positive and negative voltage swings. This supports clear and stable communication signals in various applications.
Charging Circuits
Dual power supplies ensure stable and efficient charging in devices like cell phone chargers and power banks by providing the required dual voltages. This helps manage the charging and discharging processes, ensuring battery longevity and reliability in portable electronic devices.
DC Motors
Dual power supplies are used in DC motor control circuits to supply the necessary bipolar voltages for efficient operation and control. This enables precise speed and direction control in applications such as robotics, automation, and industrial machinery.
Safety Precautions While Handling Dual Rail Power Supply
Ensure all connections are correct and secure before powering on the supply. Incorrect wiring can lead to short circuits, damaging components or causing electric shocks.
Always use tools with insulated handles to prevent accidental electrical contact.
Make sure the common ground is correctly connected. Improper grounding can cause voltage instability and potential hazards.
Be cautious of exposed wires and connections to prevent short circuits, which can cause sparks, fire, or damage to the power supply and connected devices.
Use a multimeter to check the voltage levels before and during use to ensure they are within the safe operating range for your components.
Turn off the power supply when making adjustments to your circuit or when the setup is not in use.
Ensure that the power supply has appropriate fuses or circuit breakers to protect against overcurrent situations.
Do not exceed the power supply’s rated output current. Overloading can cause overheating, damage, or even fire.
Keep the power supply and connections dry. Water or moisture can cause short circuits and increase the risk of electric shock.
Ensure the power supply has adequate ventilation to prevent overheating. Avoid covering it or placing it in an enclosed space without airflow.
Consider wearing safety glasses and gloves to protect against accidental sparks or electric shocks.
Always follow the manufacturer's guidelines and safety instructions for your specific power supply model.

Shipping
We offer various shipping methods, including sea freight, air freight, and express delivery, depending on the order size and destination.
Customers will receive a tracking number once the package has been shipped, so they can track the status of their delivery.
Shipping costs will be calculated based on the destination and weight of the package.
The standard production lead time is 20-30 days. We will arrange shipment promptly upon order completion.
In case of any delays or issues with shipping, our customer service team will promptly communicate with the customer to resolve the problem.
With our careful packaging and efficient shipping methods, you can trust that your products will arrive in perfect condition and on time.
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FAQ
We're well-known as one of the leading dual rail power supply manufacturers and suppliers in China. If you're going to wholesale customized dual rail power supply made in China, welcome to get more information from our factory.
560W Dual Output with Thermal Protection, Heavy Duty Switching Power Module, Server Grade Power Supply Board-
AC-DC Switching Power SupplyTopow AC-DC Switching Power Supply Model:TPT12S12Aread more
Universal 90-264V AC input
Stable 12V/1A DC output High... -
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