ARTICLES

January

31

2018

Common Mode Chokes – Selecting the right one

Posted by: Marque Magnetics in Uncategorized

Common mode chokes (CM chokes, also known as line filters) are widely used in switch mode power supplies (SMPS) to suppress conducted and radiated interference as needed to meet the requirements of international electromagnetic compatibility (EMC) standards. The finished product should not introduce serious electromagnetic pollution into the public electromagnetic network and at the same […]

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May

3

2017

The Power Transfer Capability of Transformers

Posted by: Marque Magnetics in Transformer Design

On a Friday afternoon, I was about to go home from the office when the phone rang. A customer asked an interesting question. This stems from a 30VA 50Hz transformer that we had designed for him, but which is actually being used in a 40VA application. “So what impact would this running situation have on […]

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July

1

2016

Choosing Transformer Cores for different SMPS topologies

Posted by: admin in Transformer Design

The selection of the magnetic components to be used in a Switch Mode Power Supply (SMPS) design is the most important element of that process. During this, understanding the topologies of SMPS’ is crucial as the designer must consider the trade-offs between them.  This article will give you an overview of these tradeoffs.   Flyback […]

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May

30

2016

Using core VA ratings to determine transformer dimensions

Posted by: admin in Transformer Design

I am writing this to share my views and experience in the design of magnetics (transformers and inductors), something in which I have been involved for most of my professional life. As in any design process, there are a number of critical parameters that must be met in order to achieve “success” and they are […]

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