
Technical Paper
3-Phase Transformers: Construction and Configurations
Explore 3-phase transformers and evaluate the pros and cons of the four primary winding configurations for ideal performance and application suitability.
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Blog Post
5 Critical Power Supply Challenges in Industrial Automation
Learn about common challenges faced by industrial automation systems and how the right power supply can help solve them
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Blog Post
Power Supply Back Pressures in Applications
Ensure optimal PSU airflow and selection with Bel Power Solutions' strategies for effective power supply cooling.
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Technical Paper
3-Phase Transformers: Construction and Configurations
Explore 3-phase transformers and evaluate the pros and cons of the four primary winding configurations for ideal performance and application suitability.
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Technical Paper
Inductors, Chokes, Reactors, Filters . . . What’s in a Name?
Learn the differences between inductors, chokes, reactors, and filters., their electromagnetic characteristics, and how they can be used to optimize electrical circuits.
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Video
Power 101: Unlocking the Power of USB-C & Power Delivery
In the latest Power 101, Bruce Rose reveals why USB-C's popularity and versatility make it the future of USB connectivity.
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Technical Paper
Optimizing Input Filter Design for POL Buck Converters
Optimize on-board power systems with Intermediate Bus Architecture (IBA) and Point of Load (POL) converters.
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Blog Post
IEC 60601: Understanding Medical Power Supply Safety
Learn about IEC 60601-1 standards for medical power supply safety, ensuring essential performance and patient protection.
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Technical Paper
Understanding USB Type-C and Power Delivery
Explore new USB-C regulations and Power Delivery standards. Learn essential design tips for USB-C.
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Blog Post
What DoE Level VII Means for Power Supply Efficiency and Your Products

Blog Post
Selecting the Right Magnetics for Your ICM
Learn how selecting the right magnetics for your ICM helps ensure signal integrity, meeting EMI/EMC requirements in LAN systems.
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Blog Post
The Difference Between Traditional and Resettable Fuses
Explore the key differences between traditional fuses and resettable PTC fuses, and how each type protects electronic circuits.
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Blog Post
Make or Buy a Power Supply: Choosing Between Custom and Off-the-Shelf Solutions
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Blog Post
The End of IEC 62368-1 Clause 4.1.1 and the Beginning of the 4th Edition

Blog Post
Assessing the Reliability of Redundant Power Supply Configurations

Blog Post
How Paralleling Power Supplies Affects Reliability

Technical Paper
More Than EV Batteries: How Bi-Directional Charging Enables New Battery Applications
Explore pluggable and rugged transceivers: compact, high-performance, and environmentally resilient with the flexibility and convenience of a pluggable part.
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Video
CFO Farouq Tuweiq's Amplify Spotlight with NASDAQ
Watch Farouq Tuwieq, CFO, discuss Bel's 40-year NASDAQ listing history with Michael Spector in this Amplify Spotlight.
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Blog Post
Selecting Power Supplies for Production in the Face of Supply Chain Challenges
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Video
Power 101: How GaN Increases Power Density
Discover the benefits of using GaN power transistors in power supplies.
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Technical Paper
80 PLUS: Why You Need Titanium Power Supplies in Your Data Center
Discover the benefits of selecting 80 plus certified power supplies, including cost, greater power efficiency and reliability, and meeting thermal constraints.
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Blog Post
Understanding Power Supply Output Capacitance Limits

Technical Paper
EN 50155: The Essential Standard for Power Supply Design in Railway Applications
Learn more about the EN 50155 standard, and the five areas that are crucial when designing power supplies for railway rolling applications.
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Video
Power 101: Benefits of Bi-Directional Charging for EVs
Bel's bi-directional chargers optimize energy storage and reliability, cutting costs and stabilizing the grid for a greener future.
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Blog Post
Selecting an Aux Power Supply for EV Charging Stations
Learn how to optimize EV charging stations with the right auxiliary power supply.
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Video
A Closer Look: TET3600 Front End AC-DC Power Supply
Bel Power’s TET3600 power supplies provide 3600W output with 97% efficiency, ideal for servers, routers, and data centers.
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Blog Post
Key Safety Considerations for Power Supplies Used in Home Healthcare Applications

Blog Post
Front-End Power Supplies for Custom Solutions & Applications
Learn how custom front-end power supplies can enhance power density and efficiency for specialized applications.
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Blog Post
How USB Type-C Mandates Affect External Power Supplies

Video
Power 101: The Versatility of USB Power Delivery Equipped Adapters
In this Power 101 video from CUI, we explain how USB Power Delivery (USB PD) works and its benefits and uses in relation to power adapters.
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Blog Post
Selecting Output Capacitors for Power Supply Applications

Blog Post
The Basics of Power Supply Surge Protection

Video
A Closer Look: MagJack® ICM Ethernet Magnetics
Bel MagJack ICMs address EMI, support 16 ports, 10Gbps, and 100W PoE, with engineering support for IEEE 802.3 and EMC compliance.
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Video
How to Change the Blade on a Slide Clip Multi-Blade Adapter
Learn how to change a blade on a slide clip universal wall plug power adapter.
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Video
How to Change the Blade on a Pinch Clip Multi-Blade Adapter
Learn how to change a pinch clip blade on a universal wall plug power adapter.
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Video
How to Change the Blade on a Hidden Clip Multi-Blade Adapter
Learn how to change a blade on a hidden clip wall plug power adapter.
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Blog Post
EMI Filter Components: what they are and how they work

Video
A Closer Look: LRSA Power Supply Systems for Rail Applications
Bel Power’s LRSA series AC-DC subrack provides 1500W for railways, ensuring reliability and maintenance-free operation.
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Blog Post
How to Select a DC-DC Converter for Rail Applications

Blog Post
Fundamentals of Power Supply Over Current Protection

Video
Power 101: Power Supply Considerations for Harsh Environments
Learn how to protect power supplies and their sensitive internal circuitry in order to ensure nominal operation without premature failures in the field.
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Video
A Closer Look: Front End Modified-Standard and Custom Design Capabilities
Bel's front-end power supplies provide top efficiency, power density, and custom modifications with robust testing.
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Video
A Closer Look: FLS and MFLS Series Power Supplies for ICT and Medical Applications
Bel Power's EOS FLS and MFLS series provide compact, efficient power for ITE/Medical use, with 250-400 W output and robust thermal protection.
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Blog Post
How Switch Mode Power Supplies Work, Block by Block

Technical Paper
Auxiliary Power Solutions for EV Chargers
Learn about EV power requirements and charger considerations.
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Technical Paper
Telehealth: Keeping it Safe
Learn more about what defines home healthcare equipment and relevant safety standards.
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Blog Post
How to Select an AC-DC Power Supply

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Powering the Smart Revolution at 277 Vac: Enabling New Applications with Wide Input Power Supplies
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Video
Power 101: IEC 62368-1 Explained
Learn more about what's changed with the implementation of IEC 62368-1 safety standard, which functions off the new Hazard-Based Safety Engineering (HBSE) principle.
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Blog Post
How Does IEC 61558 Affect Designing with Transformers and Power Supplies?

Video
A Closer Look: Bel Solutions for Electric Vehicles
Bel supports EV/eMobility with efficient, durable power solutions, including converters, chargers, inverters, and custom options.
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Blog Post
How to Select a DC-DC Converter

Video
A Closer Look: Bel Solutions for Medical Applications
Bel provides IEC 60601-1 certified power supplies, isolation transformers, fuses, and IP67 connectors for medical devices.
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Blog Post
Understanding IEC Overvoltage Categories
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Blog Post
Negative Resistance and Why Your DC-DC Converter May Not Be Working Properly

Video
Power 101: IEC 60335-1 Explained
Learn more about IEC 60335-1, the safety standard for household appliances, and how it differs from IEC 60950-1.
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Blog Post
External Power Supply Efficiency Regulations Outside the US and EU
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Video
Internal vs External: Selecting a Power Supply for Your Next Design
Many power designs offer the option between external and internal power supplies, depending on the physical configuration of the system. Dive into the pros and cons of using integrated versus modular power supplies in your system in this training module.
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Video
Customizable Power Adapters: More Than Just a Black Box
Dive into the various branding, mechanical, electrical modifications, and regulatory assistance options available when tailoring an external power supply with CUI to meet your needs.
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Video
Preparing for IEC 62368-1 Implementation
Discover IEC 62368-1, an important step that combines and replaces the long-standing IEC 60950 (ITE applications) and IEC 60065 (AV applications) standards.
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Video
How Gallium Nitride (GaN) Enables Smaller, More Efficient Power Supplies
Learn how GaN enables smaller transformers, inductors, and capacitors, resulting in increased power density.
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Blog Post
Selecting Appropriate Input and Output Plugs for Your Power Adapter

Blog Post
A Comparison Between Dc Switching Regulators and Linear Regulators

Blog Post
Reducing Supply Rail Common Mode Noise in Audio Applications

Blog Post
The UKCA Mark - Selling Into the UK After Brexit
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Video
A Comparison Between Dc Switching Regulators & Linear Regulators
In many applications, a regulator is used to convert and stabilize the system’s input voltage. Two common options are dc switching regulators and linear regulators. In this CUI In The Lab video, Ron Stull demonstrates the key differences and benefits of each.
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Video
160 Watt GaN Desktop Adapter - Portable Power
Discover CUI's SDI160G series and the notable benefits that GaN offers over traditional silicon-based transistors.
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Video
How to Measure Ripple & Noise in Power Supplies
Learn how to conduct ripple and noise measurements along with proper probing techniques with CUI’s Product Marketing Engineer, Ron Stull.
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Video
The Benefits of GaN Power Adapters
There are several advantages of using GaN transistors over silicon-based transistors including compact size, lighter weight, and higher efficiency. In this video, we showcase these key advantages with CUI's SDI200G GaN powered adapter.
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Blog Post
The Fundamentals of Regulatory Considerations for Power Supplies
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Blog Post
The Fundamentals of Trimming the Output Voltage of a Power Supply

Blog Post
What are the Differences Between IEC Power Supply Protection Classes?

Technical Paper
IEC 60601-1 Medical Design Standards for Power Supplies
Learn what IEC 60601-1 means for medical power supplies.
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Technical Paper
EMI Considerations for Switching Power Supplies
Discover EMI standards and mitigation methods for switching power supplies.
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Technical Paper
Power Factor and Power Factor Correction
Learn what power factor is and how it relates to switching power supplies.
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Technical Paper
Current Sharing with Power Supplies
Consider parallel configuration of your power supplies to share load current.
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Technical Paper
Reliability Considerations for Power Supplies
Discover what reliability looks like for your power application and how to optimize it.
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Technical Paper
Design Considerations for Thermal Management of Power Supplies
Improve thermal management in your power application with these approaches.
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Blog Post
Ecodesign 2019/1782 – The Latest EU Efficiency Regulations and How We Got Here
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Technical Paper
Module or Discrete Power? An Age-Old Question with an Evolving Answer
Discover the pros and cons of pre-designed power module vs a custom solution.
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Technical Paper
Glossary of Power Supply Terms
Reference this handy glossary for definitions of key terms and concepts in the field of power electronics.
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Blog Post
Connecting Power Supplies in Parallel or Series for Increased Output Power

Blog Post
The Latest on IEC 62368-1: The Time to Act Is Now
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Blog Post
IEC 60335-1 Explained: Safety Standards for Household Appliances
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Blog Post
USB Type-C, Power Delivery and Programmable Power Supply

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Power Supplies with Enhanced Peak Power Capability

Blog Post
6 Key Considerations for Selecting an External Power Supply

Technical Paper
Efficiency Standards for External Power Supplies
Learn about the regulatory environment surrounding external power supplies and CUI's commitment to ensuring their portfolio of adapters complies.
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Blog Post
Designing with Multiple Output Power Supplies

Video
How to Change a Blade on a Universal Wall Plug Adapter
Learn how to change a blade on a universal wall plug power adapter.
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Blog Post
Insulation Isolation and Working Voltage

Blog Post
What is the Difference Between Unregulated and Regulated Power Supplies?

Blog Post
What is the Difference Between EMI and EMC in Power Supplies?

Blog Post
How Gallium Nitride (GaN) Enables Smaller, More Efficient Power Supplies

Technical Paper
Power Supply Safety Standards, Agencies, and Marks
Reference this handy guide to learn more about power supply safeties worldwide.
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Blog Post
Power Supply Cooling
Discover power supply cooling methods for optimal performance.
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Blog Post
In-House Certification Laboratory
Discover our unique, in-house testing laboratory, eliminating delays in the certification process.
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Blog Post
Troubleshooting DC-DC Oscillations During Surge Testing
Discover how addressing DC-DC oscillations during surge testing can prevent start-up failures and reduce equipment damage.
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Blog Post
Selecting AC-DC PSU Supply for High Performance Applications
Explore selecting AC-DC power supplies for high-performance applications and the key factors to consider.
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Blog Post
EMI Solutions for External Power Supplies

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Isolated vs Non-Isolated Power Converters

Blog Post
How Isolation Transformers Increase Safety in Electronic Systems
Optimize safety with isolation transformers. Explore compliance, benefits in switching power supplies, and strategic selection insights.
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Blog Post
Understanding Power Supply Derating Curves

Video
A Closer Look: Bel Magnetic Solutions MagJack® Integrated Connector Modules
Bel and TRP ICMs support 10/100 Base-T to 10GBase-T and 100W PoE, meeting bandwidth demands with MagJack® ICMs.
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Video
A Closer Look: Bel Power Solutions Melcher RCM Series Chassis Mount Converters
Bel’s Melcher™ RCM DC-DC converters provide reliable railway power from 60W to 1000W with wide input voltage ranges.
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Blog Post
How to Measure Ripple and Transient in Power Supplies

Blog Post
IEC 60601-1-2 4th Edition: What You Need to Know
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Blog Post
Consequences of Exceeding a Power Supply’s Operating Temperature Range

Technical Paper
Controlling EMI in Power Transformers
Control EMI in Power Transformers with essential design solutions to prevent device failure and interference.
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Technical Paper
UL Class 2 and 3 vs. IEC Class I, II, and III
Explore the differences between UL Class 2 and 3, and IEC Class I, II, and III.
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Blog Post
Transformer Insulation Fundamentals
Learn how insulation systems manage transformer temperature and ensure reliability
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Blog Post
Transformer Basics: Insulation Systems and Material Choices
Learn the transformer basics, including insulation, coil winding, and EI vs. toroidal core advantages.
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Blog Post
Selecting Surface Mount Inductors For DC to DC Converter Applications
Get the most from your DC to DC Converters with our guide to selecting the right surface mount inductors.
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Blog Post
Ethernet Invades the Industrial Space
Discover how Ethernet is revolutionizing industrial spaces with high-speed, reliable, and robust connectivity solutions.
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Blog Post
How Multi-rate Ethernet Enables Higher Speeds at Lower Cost
Learn how multi-rate Ethernet enables higher speeds at lower costs, optimizing performance for modern networking needs.
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Blog Post
What Are the Drawbacks of Exceeding a Power Supply's Output Current?

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What Issues Can Arise When Exceeding a Power Supply's Input Voltage?

Technical Paper
IEC 62368-1: An Introduction to the New Safety Standard for ICT and AV Equipment
Learn what IEC 62368-1 means for ICT and AV equipment.
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Video
A Closer Look: Bel Power Solutions eMobility Product Family Overview
Bel’s eMobility products include IP67 inverters, converters, and chargers, with custom solutions for hybrid and electric vehicles.
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Blog Post
An Overview of Limited Power Source (LPS) Requirements

Blog Post
What is the Difference Between UL Listed and UL Recognized?

Blog Post
Why is Power Factor Important When Measuring Efficiency?

Blog Post
Optimizing Reliability of Secured Magnet Wire in Ethernet ICMs
Boost Ethernet ICM reliability with Bel Fuse's spot-welding process, enhancing efficiency and quality.
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Blog Post
CoC Tier 2 Did Not Become Law in Europe as Expected – Now What?
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Video
A Closer Look: Bel Solutions for Data Centers & High Performance Computing
Explore comprehensive data center solutions with Bel’s power shelves, PSUs, AC/DC PDUs, system controllers, and cable harnesses.
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Technical Paper
The Language of Noise: Power System Design and EMI
Learn about electromagnetic noise origins, effects, and essential management strategies in electronic design.
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Blog Post
Applying OCP Rack & Power Specs to New & Existing Data Centers
Learn how applying Open Compute Project (OCP) rack and power specifications can enhance efficiency in new and existing data centers.
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Blog Post
Selecting Ruggedized Power Converters for Rolling Stock Applications
Choosing ruggedized power converters for rolling stock ensures reliability in harsh rail environments, meeting EN 50155 standards.
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Blog Post
The Importance of EMC Testing Early in Your Product's Design
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Blog Post
A Closer Look at MTBF, Reliability, and Life Expectancy

Blog Post
What's the Difference Between Class 2 and Class II Power Supplies?

Blog Post
The Game of Energy Efficiency Leapfrog Continues – Make Sure You're Ready

Blog Post
EMC Standards Consolidation – Like It or Not, It Is Happening Now

Product FAQ
Power FAQ
Find answers to power supply questions, including testing and measurement, safety standards, and efficiency regulations.
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