

An AC-DC power board is a critical electronic module designed to convert alternating current (AC) into stable direct current (DC), ensuring safe and reliable power supply for electronic and industrial equipment. As a core component in modern power systems, an AC DC power board is widely used in audio equipment, industrial machinery, automation systems, and consumer electronics where stable DC output is essential.
The HJXY-D300 AC to DC power board is an industrial-grade, high-performance AC-DC power supply board engineered for efficiency, stability, and long-term reliability. With a wide input voltage range, multiple protection mechanisms, and support for OEM customization, it is an ideal solution for demanding power conversion applications.

An AC DC power converter board is a circuit board or module that converts AC input from the power grid into regulated DC output suitable for electronic devices. Compared with traditional linear power supplies, modern AC-DC power boards feature higher efficiency, compact size, and advanced protection functions.
The HJXY-D300 functions as a high efficiency AC-DC power board, delivering stable DC output with conversion efficiency ≥85%, making it suitable for both commercial and industrial applications.
| Model: | HJXY-D300 |
| Type: | Ac~Dc Power Board |
| Custom Processing: | OEM |
| Certification: | CE / ROHS |
| Whether to Customize: | Parameters can be customized according to needs |
| Input Voltage: | AC100~240V |
| Input Frequency: | 50/60Hz |
| Output Voltage And Current: | 20V5A 24V4.15A 28V3.5A 30V3.3A |
| Output Power: | 100W |
| Work Efficiency: | ≥85% |
| Working Temperature: | -20℃~+50℃ |
| Storage Temperature: | -20℃~+80℃ |
| Humidity: | 10%~90% RH |
| Modulation Mode: | PWM Formula |
| Multiple Protection Functions: | Overvoltage protection, short circuit protection, overload protection, temperature protection |
The HJXY-D300 AC DC power supply board integrates multiple protection mechanisms to ensure safe operation:
Overvoltage protection
Short circuit protection
Overload protection
Over-temperature protection
These features make it a reliable isolated AC DC power board for sensitive electronic equipment and industrial systems.
Working Temperature: -20℃ to +50℃
Storage Temperature: -20℃ to +80℃
Humidity: 10%–90% RH
Designed for stable performance in harsh environments, this durable AC DC power converter board is suitable for long-term continuous operation.
With ≥85% conversion efficiency, this high efficiency AC-DC power board reduces power loss and heat generation, improving overall system performance.
Advanced PWM control ensures precise voltage regulation, making it ideal as a compact AC DC power board for electronics requiring consistent DC power.
Integrated protection functions and CE/RoHS certification guarantee operational safety and regulatory compliance.
The board’s compact structure allows easy integration into space-limited devices, functioning as a custom PCB AC DC power board for embedded applications.
As an experienced AC DC power board manufacturer, customized voltage, current, PCB layout, and form factor options are available for OEM projects.
The HJXY-D300 AC to DC power board is widely used in:
Digital speakers and audio systems
Industrial machinery and automation equipment
Control systems and embedded electronics
Communication and power control devices
Consumer and commercial electronic products
Its stable output and safety features make it an ideal isolated AC DC power converter board for both internal and external power supply applications.
As a professional AC DC power board supplier, we provide:
Custom AC DC power board solutions
OEM / ODM services
Flexible voltage and power configurations
Bulk and wholesale AC DC power board supply
Whether you need a standard model or a fully customized power solution, we can support your project from design to mass production.
Reliable AC-DC power supply board with proven performance
High efficiency, low power loss design
Strong protection and long service life
Professional AC DC power board manufacturer support
Ideal for electronics, industrial equipment, and OEM applications
Q1: What is an AC-DC power board?
A1: An AC-DC power board is a circuit board or module that converts alternating current (AC) from the power grid into stable direct current (DC). It is widely used in electronic devices, industrial equipment, and automation systems to provide reliable power. The HJXY-D300 is an example of a high efficiency AC-DC power board with multiple protection functions and stable output.
Q2: What is the input and output specification of the HJXY-D300 AC DC power board?
A2: The AC DC power board supports an input voltage of AC100–240V at 50/60Hz. Its output options include 20V/5A, 24V/4.15A, 28V/3.5A, and 30V/3.3A with a maximum output power of 100W. The board achieves a conversion efficiency ≥85%, making it a high efficiency AC to DC power supply board suitable for both industrial and consumer applications.
Q3: What protection features does the AC-DC power supply board include?
A3: The HJXY-D300 AC-DC power supply board comes with multiple protection mechanisms:
Overvoltage protection
Overcurrent and overload protection
Short circuit protection
Over-temperature protection
These features ensure the safety of both the board and the connected devices, making it a reliable isolated AC DC power board.
Q4: Can the AC DC power board be used in harsh environments?
A4: Yes. The HJXY-D300 AC DC power converter board operates in temperatures from -20℃ to +50℃ and can be stored between -20℃ and +80℃. It supports 10–90% RH humidity, making it suitable for industrial, commercial, and residential applications.
Q5: Is the HJXY-D300 suitable for custom applications?
A5: Absolutely. As a professional AC DC power board manufacturer, we provide customization services including:
Output voltage and current adjustment
PCB layout modifications
OEM/ODM solutions
Custom enclosure or compact design
You can request a custom AC DC power board tailored to your specific project requirements.
Q6: What are the main applications of an AC-DC power board?
A6: The HJXY-D300 AC DC power board is widely used in:
Digital speakers and audio systems
Industrial machinery and automation equipment
Control systems and embedded electronics
Communication devices and telecommunication equipment
Consumer electronics and home appliances
It functions as a compact AC DC power board for electronics and an isolated AC DC power converter board for safe and stable power delivery.
Q7: Can I purchase the HJXY-D300 in bulk?
A7: Yes, we are a reliable AC DC power board supplier and offer wholesale AC DC power boards for commercial and industrial buyers. Bulk orders can also be customized according to voltage, current, and PCB layout requirements.
Q8: Is the AC-DC power supply board certified?
A8: Yes, the HJXY-D300 AC-DC power supply board has CE and RoHS certification, ensuring compliance with safety and environmental standards.