2020

Dec. 28. 2020

Peak power ratings with convection and conduction cooled power supplies Peak Current

Oct. 26. 2020

Using a Class I power supply in a Class II construction 60601-1 | Class I & II | Grounding | Medical

Aug. 28. 2020

Buck & Buck-Boost Converter Operating Ranges Application Information | Buck Boost | DC-DC converters

Jul. 31. 2020

What are buck, boost and buck-boost DC-DC converters? Buck Boost | DC-DC converters | Technology

Jun. 23. 2020

Selecting a High Voltage Programmable Power Supply Constant Current | high voltage power supply | Programmable Power Supply

May. 28. 2020

Avoiding noise issues when operating power supplies in parallel Application Information | Parallel Operation | Remote Sense

Apr. 15. 2020

How can I increase a power supply’s hold-up time? Application Information | Aviation | Hold-up

Feb. 20. 2020

How do I evaluate a convection cooled power supply’s performance? Application Information | Cooling Techniques | Reliability

2019

Dec. 06. 2019

Can I operate my three phase power supply from WYE and Delta AC inputs? General Information | Three phase

Sep. 30. 2019

Fan cooling power supplies, which airflow direction is better? Fan | Reliability

Aug. 30. 2019

When are fuses needed in Line and Neutral for industrial applications? Fusing | Safety Certification

Jul. 31. 2019

When are dual fused power supplies not permitted? 60950-1 | Fusing | Safety Certification

May. 30. 2019

Does it matter how an EMC/EMI filter is wired to a power supply? Application Information | EMC & EMI

Apr. 29. 2019

How do I balance the current between two DIN rail power supplies used in parallel? Application Information | DIN Rail | Parallel Operation | Redundant Operation

Jan. 25. 2019

What is the difference between efficiency and average efficiency? Energy Efficiency | Regulation

2018

Nov. 28. 2018

Can a dual output DC-DC converter provide a single output? Application Information | DC-DC converters | Series Operation

Oct. 26. 2018

Z+ - Generating Arbitrary Waveforms Application Information | Programmable Power Supply

Aug. 22. 2018

External Power Supply Efficiency Standards Energy Efficiency | Regulation

Jun. 27. 2018

An update to the transition from IEC 60950-1 to IEC 62368-1 60065-1 | 60950-1 | 62368-1 | Legislation | Safety Certification

Apr. 27. 2018

Where and why is a 277Vac input used in the USA? 277Vac

Feb. 27. 2018

Synchronizing the i6A DC-DC Converter Switching Frequencies DC-DC converters | EMC & EMI | Synchronization

Jan. 08. 2018

Factors to consider when using 1U high power supplies in industrial environments Audible noise | Fan | General Information | Reliability

2017

Nov. 07. 2017

Power Supply Overvoltage Category (OVC) OVC | Overvoltage

Sep. 01. 2017

Power supply fan noise reduction Audible noise | Fan

May. 24. 2017

Medical power supplies meeting IEC 60601-1-2 4th edition voltage dips and interruptions 60601-1 | EMC & EMI | Medical | Safety Certification

Jan. 17. 2017

How will the Power Supply Industry be affected by EN 55032 replacing EN 55022? EMC & EMI | Legislation

2016

Nov. 22. 2016

How does IEC 60601-1-2 EMC 4th Edition relate to power supplies? 60601-1 | EMC & EMI | Medical | Safety Certification

Sep. 01. 2016

Comparing Power Supply MTBF Numbers General Information | MTBF

May. 26. 2016

Constant Voltage, Constant Current Battery Charging Application Information | Battery Charger | Constant Current | Constant voltage

Apr. 18. 2016

What is a Power Supply Standby Voltage? Application Information | Standby Voltage

Feb. 29. 2016

An alternative to isolated DC-DC converters DC-DC converters | non-isolated | POL

Jan. 21. 2016

Department of Energy Level VI energy efficiency standards for external power supplies General Information | Legislation

2015

Nov. 30. 2015

Portable Generators and Electronic Power Supplies Application Information | ISO 8528 | Legislation

Oct. 29. 2015

Power Supply Safety Reports and Certifications 60950-1 | CB Report | Safety Certification

Jul. 29. 2015

Using Droop Mode Current Share Power Supplies Application Information | DIN Rail | Parallel Operation

Jun. 30. 2015

Comparing DC-DC Converter’s Usable Power Application Information | DC-DC converters | De-rating

May. 27. 2015

Understanding convection cooled power supplies Application Information | Cooling Techniques

Apr. 16. 2015

Reducing noise on open frame power supplies Application Information | EMC & EMI | Ripple & Noise

Jan. 05. 2015

Pollution Degree Ratings for Power Supplies Application Information | Pollution Degree | Safety Certification

2014

Nov. 28. 2014

What pin material should I use for my power supply connector pins? Application Information | Connectors | General Information

Aug. 26. 2014

Ground Continuity & Ground Bonding Tests on Power Supplies Grounding | Safety Certification

Jul. 31. 2014

UL 60601-1 and ANSI/AAMI ES 60601-1 60601-1 | ANSI/AAMI | Legislation | Safety Certification

May. 20. 2014

Cathodic Protection Using Active Corrosion Control Application Information | Cathodic Protection

Mar. 03. 2014

When should external diodes be used with a power supply? Application Information | External Diodes | Redundant Operation

Jan. 21. 2014

Power Supply Operation on a 400Hz Source 400Hz | Application Information | Aviation

2013

Dec. 20. 2013

The advantages of using a power supply incorporating digital control to power non-linear loads digital control | Technology

Oct. 30. 2013

Reducing Switching Power Supply Radiated & Conducted EMI Application Information | EMC & EMI | Grounding

Sep. 23. 2013

“Brute Force” Parallel of Power Supplies Application Information | Parallel Operation

Aug. 30. 2013

What Makes Switching Power Supplies Hiss? Energy Efficiency | General Information

Jul. 12. 2013

Power Supply Filter Capacitor Values Can Change with the Applied Voltage DC-DC converters | non-isolated | POL

May. 10. 2013

What Size Heatsink Do I Need? Application Information | Cooling Techniques | Energy Efficiency

Apr. 02. 2013

Power Supply "Remote Sense" Mistakes and Remedies Application Information | Regulation | Remote Sense

Mar. 05. 2013

What does SELV mean for Power Supplies? 60950-1 | Safety Certification | SELV

Feb. 07. 2013

Power Supply Rise and Fall Output Characteristics Application Information | Rise and Fall Times | Signals

2012

Dec. 05. 2012

How can I use my power supply’s alarm signals? Application Information | Signals

Oct. 09. 2012

How Does Altitude Affect AC-DC Power Supplies? 60950-1 | Altitude | Safety Certification

Sep. 05. 2012

Efficiency Calculations for Power Converters Application Information | Cooling Techniques | Energy Efficiency

Jun. 13. 2012

What is a Limited Power Source? 60950-1 | Limited Power Source (LPS) | Safety Certification

Apr. 09. 2012

Minimum loads and cross-regulation on multiple output power supplies Application Information | Minimum Load | Regulation

Mar. 14. 2012

Wide range adjustable power supplies Application Information | Output Adjustment

Feb. 02. 2012

Advantages of Conduction-Cooled Power Supplies Application Information | Cooling Techniques | Reliability

2011

Dec. 05. 2011

What is a Power Supply’s IP Rating? Application Information | Ingress Protection (IP) | Safety Certification

Nov. 03. 2011

Mounting Precautions for Power Supplies Application Information | Cooling Techniques | Mounting

Sep. 09. 2011

Using Power Supplies with Brushed and Brushless DC Motors Application Information | DC Motor | External Diodes

Aug. 02. 2011

What type of LED driver or power supply do I need? Constant Current | Constant voltage | LEDs

Jul. 06. 2011

What does a BF rating on a power supply mean? 60601-1 | Applied Part | BF Rating | Safety Certification

Jun. 07. 2011

Power Supply Losses and the Impact of Rising Efficiencies Application Information | Energy Efficiency

May. 23. 2011

Class 2 or Class II power supplies? 60950-1 | Class 1 & 2 | Class I & II | Safety Certification

Apr. 01. 2011

Where’s the CSA logo on my power supply? Product Marking | Safety Certification

Mar. 02. 2011

How does the AC Fail signal work in a power supply? Application Information | Signals

Feb. 07. 2011

Inrush Currents & External Fusing on Power Supplies Application Information | Fusing | Inrush Current

2010

Dec. 15. 2010

Power Supply Efficiency – How Important is it? Energy Efficiency | Legislation

Nov. 24. 2010

Using the Inhibit or Enable function on Power Supplies Application Information | Remote On/Off | Signals

Oct. 28. 2010

Damaging Power Supplies with Repetitive Peak Current Draws Application Information | Peak Current

Sep. 30. 2010

How does the new UL Mark affect me? 60601-1 | 60950-1 | Product Marking | Safety Certification

Aug. 02. 2010

Power Supply Leakage Current Testing to IEC60990 Leakage and Touch Current | Safety Certification

Jul. 06. 2010

Did my power supply fail or just wear out? General Information | Reliability

May. 13. 2010

Common safety standards used with power supplies 60601-1 | 60950-1 | 61010-1 | Safety Certification

Apr. 26. 2010

Cold Temperature Start Up of Low Cost Power Supplies with Inrush Thermistors Application Information | Cold Temp Start Up

Mar. 03. 2010

Hipot or Dielectric Strength Testing Application Information | Dielectric Strength Test | Hipot Test | Safety Certification

2009

Nov. 03. 2009

Why Use DIN Rail Mount Power Supplies? DIN Rail | Mounting

Jul. 22. 2009

Operating Power Supplies in Series Application Information | External Diodes | Series Operation

Apr. 22. 2009

Maximizing the Life of Power Supply Fans Cooling Techniques | General Information | Reliability

Mar. 28. 2009

Why pay more for a power supply with a longer warranty? General Information | Reliability

Feb. 20. 2009

Power Supply Considerations for Industrial Applications Application Information | EMC & EMI | Mounting | Peak Current | Reliability

Jan. 29. 2009

What Size Fan Do I Need? Application Information | Cooling Techniques

2008

Dec. 23. 2008

What is the SEMI F47 line sag spec all about? Legislation | SEMI F47

Nov. 21. 2008

Ripple & Noise Specs and Measurements Application Information | Ripple & Noise

Sep. 19. 2008

Over Current Protection in Power Supplies & Converters General Information | Protection.

Aug. 05. 2008

Power Supplies with Wide Range Adjustable Outputs General Information | Output Adjustment

Jul. 03. 2008

What is Remote Sensing? Application Information | Remote Sense

May. 19. 2008

Choosing an Input EMI / EMC Filter for a Power Supply Application Information | EMC & EMI

Mar. 05. 2008

Droop Mode Current Share Application Information | DIN Rail | Parallel Operation

Feb. 08. 2008

What is PFC and why do I need it? Energy Efficiency | Legislation | Power Factor Correction

Jan. 03. 2008

What does 1U, 2U or 3U mean? General Information | Mounting

2007

Dec. 05. 2007

What do they mean by Output Power Derating? Application Information | De-rating | Operating Temperature

Nov. 26. 2007

What are the differences between Conduction, Convection and Radiant Cooling of Power Devices? Cooling Techniques | General Information

Nov. 05. 2007

Guide to EMC Standards for Power Supplies EMC & EMI | Safety Certification

Oct. 26. 2007

Isolated & Non-Isolated DC-DC Converters DC-DC converters | non-isolated

Oct. 08. 2007

Why is my power supply input only rated from 100-240VAC? Product Marking | Safety Certification

Sep. 18. 2007

A “Beginner’s Guide” to Fault Tolerant Power Supplies Application Information | Redundant Operation | Reliability

Sep. 07. 2007

Advances in Power Supplies for Automated Electrochemical Mini-Plants Application Information | Constant Current | Water Purification

Sep. 06. 2007

What’s all this stuff about "Digital Power"? digital control | Technology

Sep. 04. 2007

Can I Operate my AC-DC Power Supply with a DC Input? Application Information | DC-DC converters

Aug. 17. 2007

What size and type of output wires should I use? Application Information | Wire Gauge

Aug. 09. 2007

Types of Distributed Power Architectures Application Information | DC-DC converters | POL

Aug. 08. 2007

Linear vs. Switch-mode Power Supplies General Information

Aug. 08. 2007

About Power Topics General Information