In the field of modern electrical and electronic engineering, the Switching Power Supply has become the core component for efficient power conversion in industrial, commercial, and civil applications. Many users ask: Does a switching power supply convert AC to DC? The answer is yes, and it achieves this through a more efficient and compact design compared to traditional linear power supplies. This article will explain the working principle of switching power supplies, compare them with linear power supplies, and introduce the HDR series Switching Power Supply from Zhejiang C&J Electrical co., ltd. (C&J Electrical).
In a linear power supply, the transformer operates directly at the input line frequency (e.g., 50/60 Hz). In a switching power supply, the AC input is first rectified to DC, then chopped at a high frequency (tens or hundreds of kilohertz), and this high-frequency AC is then fed to a much smaller transformer.
A Switching Power Supply is an efficient power conversion device that converts alternating current (AC) from the grid into stable direct current (DC) for electronic equipment. Unlike linear power supplies, which use large transformers operating at line frequency, switching power supplies first rectify the AC input to high-voltage DC, then “chop” this DC into high-frequency AC (tens to hundreds of kHz). This high-frequency AC is then passed through a much smaller, lighter transformer, which significantly reduces the size and weight of the power supply while improving energy efficiency. This design makes the Switching Power Supply ideal for space-constrained and energy-sensitive applications.
Overview of C&J Electrical HDR Series Switching Power Supply
The HDR-15, 30, 60, 100 series are 15W, 30W, 60W, and 100W adjustable AC-DC ultra-thin DIN rail switching power supplies developed by C&J Electrical. They feature an 85-264VAC full-range input, supporting 5V, 12V, 15V, 24V, and 48V DC outputs, making them highly versatile for various industrial needs.
With an efficiency of up to 90%, the HDR series stands out for its energy-saving performance. The front and rear ventilation design of the housing allows these Switching Power Supplies to operate reliably in a temperature range of -20°C to +85°C without the need for a cooling fan, reducing maintenance requirements and improving reliability in harsh environments.
The HDR series is equipped with complete protection functions and strong anti-interference capabilities, complying with international safety standards such as EN 60950-1, EN 60335-1, EN 61558-1/-2-16, and GB4943. These certifications ensure the safety and reliability of the power supply in industrial and commercial applications. The HDR series provides a cost-effective solution for a wide range of industrial applications, combining high performance, compact size, and long-term stability.
Key Features & Product Advantages
The HDR series Switching Power Supply from C&J Electrical offers numerous advantages over traditional power supplies:
- Ultra-thin DIN rail design: Compact size (359054.5mm) for easy installation in space-constrained control cabinets.
- Wide input voltage range: 85-264VAC and 120-370VDC, suitable for global power grids.
- Multiple output options: 5V, 12V, 15V, 24V, and 48V DC outputs to meet diverse load requirements.
- High efficiency: Up to 90% efficiency, reducing energy consumption and heat generation.
- Fanless operation: Front and rear ventilation allows operation from -20°C to +85°C without a fan.
- Comprehensive protection: Overload, overvoltage, and short-circuit protection ensure safe operation.
- International certifications: Compliant with EN 60950-1, EN 60335-1, and other safety standards.
- High reliability: MTBF ≥364.6K hours (MIL-HDBK-217F at 25°C) for long-term, stable performance.
- OEM customization: Supports brand and model customization to meet specific customer needs.
Technical Parameters
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Parameter
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Details
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|---|---|
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DC Output Voltage
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5V / 12V / 15V / 24V
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|
Rated Current
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3A / 2A / 2A / 1.5A
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Rated Power
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15W / 24W / 30W / 36W
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Input Voltage
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85~264VAC, 120~370VDC
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|
Frequency Range
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47~63Hz
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Efficiency (Typ)
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74% / 81% / 82% / 83%
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Working Temperature
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-10~+50°C (derating required)
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Size
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35*90*54.5MM（W*H*D） |
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MTBF
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≥364.6K hrs (MIL-HDBK-217F, 25°C)
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|
Certifications
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GB 4943.1-2011, EN 60950-1, EN 60335-1
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Application Scenarios
The HDR series Switching Power Supply is widely used in various industrial and commercial applications due to its compact size, high efficiency, and reliable performance:
- Industrial control systems: PLCs, HMIs, and sensors in factory automation.
- Building automation: Lighting controls, security systems, and HVAC equipment.
- Telecommunications: Network switches, routers, and communication devices.
- Instrumentation: Test and measurement equipment requiring stable DC power.
- Transportation: Railway signaling, vehicle electronics, and marine systems.
- OEM applications: Customized power solutions for industrial equipment manufacturers.
Why Choose C&J Electrical HDR Series Switching Power Supply?
C&J Electrical is a professional manufacturer of industrial electrical components, and the HDR series Switching Power Supply is designed to meet the highest standards of performance, reliability, and safety. Here are the key reasons to choose our products:
- Professional R&D and manufacturing: Years of experience in power supply design and production ensure product quality.
- High efficiency and energy saving: Up to 90% efficiency reduces operational costs and environmental impact.
- Compact and durable: Ultra-thin DIN rail design with fanless operation for reliable performance in harsh environments.
- Comprehensive certifications: Meets international safety and EMC standards for global market access.
- Flexible customization: OEM services allow customers to tailor products to their specific needs.
- Excellent after-sales support: Professional technical support and reliable warranty services.
Get in Touch
If you have any questions about the HDR series Switching Power Supply, such as product specifications, customization options, or bulk orders, please feel free to contact C&J Electrical. Our team of experts will provide you with high-quality power solutions and reliable service.
Post time: Mar-06-2026