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Topic Categories PDF
Power Supply Operation on a 400Hz Source
What is Constant Voltage, Constant Current Battery Charging? Application InformationBattery ChargerConstant CurrentConstant Voltage
Cathodic Protection Using Active Corrosion Control
Cold Temperature Start Up of Low Cost Power Supplies with Inrush Thermistors
How to safely power LEDs
Advances in Power Supplies for Automated Electrochemical Mini-Plants
Understanding convection cooled power supplies?
What Size Fan Do I Need?
What Size Heatsink Do I Need?
Efficiency Calculations for Power Converters  
Mounting Precautions for Power Supplies
Advantages of Conduction-Cooled Power Supplies
Maximizing the Life of Power Supply Fans Application Information,
Applications of DC-DC converters For Base Station RF Power Amplifiers
Can I Operate my AC-DC Power Supply with a DC Input?
How do I compare a DC-DC Converter’s Usable Power? , De-rating
Types of Distributed Power Architectures
Can a Dual Output DC-DC Converter Provide a Single Output?  Series Operation
Using Power Supplies with DC Motors
What do they mean by Output Power Derating?
How do I use Droop Mode Current Share Power Supplies?
Does it matter how an EMC/EMI filter is wired to a power supply?  
Choosing an Input EMI Filter for a Power Supply
Reducing Switching Power Supply Radiated & Conducted EMI
How do I reduce noise on open frame power supplies?  
Power Supply Considerations for Industrial Applications
Power Supply Losses and the Impact of Rising Efficiencies

When should external diodes be used with a power supply?
Inrush Currents & External Fusing on Power Supplies
What pin material should I use for my power supply connector pins?  
What is a Power Supply’s IP Rating?
How do Electronic Power Supplies work on Portable Generators?
Wide range adjustable power supplies
“Brute Force” Parallel of Power Supplies
Droop Mode Current Share
How do I balance the current between two DIN rail power supplies used in parallel? New
Damaging Power Supplies with Repetitive Peak Current Draws
Z+ - Generating Arbitrary Waveforms  Programmable Power Supply
A “Beginner’s Guide” to Fault Tolerant Power Supplies
Minimum loads and cross-regulation on multiple output power supplies
Power Supply "Remote Sense" Mistakes and Remedies
What is Remote Sensing?
Ripple & Noise Specs and Measurements
Hipot or Dielectric Strength Testing  
Operating Power Supplies in Series
How can I use my power supply’s alarm signals?
How does the AC Fail signal work in a power supply?
Using the Inhibit or Enable function on Power Supplies
Power Supply Rise and Fall Output Characteristics
What is a power supply standby voltage? Application Information, Standby Voltage
What size and type of output wires should I use?
Power supply fan noise reduction  Audible Noise, Fan
Synchronizing the i6A DC-DC Converter Switching Frequencies DC-DC convertersEMC and EMI, Synchronization
CE Mark and DC-DC converters
Isolated & Non-Isolated DC-DC Converters
What is an alternative to isolated DC-DC converters?  
Power Supply Filter Capacitor Values Can Change with the Applied Voltage
Why Use DIN Rail Mount Power Supplies?
Power Supply Efficiency – How Important is it?
What are the Department of Energy Level VI energy efficiency standards for external power supplies?

What is the Difference Between Efficiency and Average Efficiency?  Energy EfficiencyRegulation
External Power Supply Efficiency Standards  Energy EfficiencyRegulation
When are fuses needed in Line and Neutral for industrial applications? New FusingSafety Certification
About Power Topics
Where and why is a 277Vac input used in the USA?   277VAC
Linear vs. Switch-mode Power Supplies
What are the differences between Conduction, Convection and Radiant Cooling of Power Devices?
What Makes Switching Power Supplies Hiss?
Factors to consider when using 1U high power supplies in industrial environments  General InformationReliabilityAudible Noise, Fan
Benefits of Environmentally Friendly Power Supplies
FAQ Modular power supplies
What does 1U, 2U or 3U mean?
How do I Compare Power Supply MTBF Numbers? General InformationMTBF
Power Supplies with Wide Range Adjustable Outputs
Over Current Protection in Power Supplies & Converters
Can I operate my three phase power supply from WYE and Delta AC inputs? New , Three Phase
Fan cooling power supplies, which aiirflow direction is better? New FanReliability
When are dual fused power supplies not permitted? New
Is there a wave of power supply obsolescence coming?
How will the Power Supply Industry be affected by EN 55032 replacing EN 55022?
Harvesting More Energy without Building More Power Plants
What is PFC and why do I need it?
What is the SEMI F47 line sag spec all about?
Low Cost Power Supplies Can Be Expensive Reliability
Did my power supply fail or just wear out?
Why pay more for a power supply with a longer warranty?
Choosing Power Supplies for Medical Applications
Common safety standards used with power supplies
How does the new UL Mark affect me?
UL 60601-1 and ANSI/AAMI ES 60601-1 , 
What does a BF rating on a power supply mean?  
Medical power supplies meeting IEC 60601-1-2 4th Edition voltage dips and interruptions  Safety Certification60601-1MedicalEMC & EMI
How does IEC 60601-1-2 EMC 4th Edition relate to power supplies? Safety Certification60601-1MedicalEMC & EMI
Should power supply manufacturers adopt IEC 62368-1:2014 early to replace IEC 60950-1 and IEC 60065? 60065-1
How Does Altitude Affect AC-DC Power Supplies?
What is the IEC/UL/EN 60950-1 Amendment 2?
What information do Power Supply Safety Reports and Certifications Contain?
Class 2 or Class II power supplies?
What is a Limited Power Source?
Where’s the CSA logo on my power supply?
Why is my power supply input only marked 100-240VAC?  
What does SELV mean for Power Supplies?
An update to the transition from IEC 60950-1 to IEC 62368-1   , , 60065-1, 62368-1, 60065-1, Legislation
What are Pollution Degree Ratings for Power Supplies?  
New Requirements for CE Marking on Power Supplies
Guide to EMC Standards for Power Supplies
How to Avoid Being Ripped Off When Buying Power Supplies  
Ground Continuity & Ground Bonding Tests on Power Supplies
Power Supply Leakage Current Testing to IEC60990
Power Supply Overvoltage Category (OVC)  OVC
The advantages of using a power supply incorporating digital control to power non-linear loads
What’s all this stuff about "Digital Power"?