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Efficiency Through the Looking-Glass

If you've ever designed or purchased a power supply, chances are you have had to work with efficiency calculations. I can remember in my beginning electronic circuits course in college, in the last le...

posted by Jason Sachs on Dec 8 2013 under Power Electronics | System Design 
Comments (4) |

Lost Secrets of the H-Bridge, Part III: Practical Issues of Inductor and Capacitor Ripple Current

We've been analyzing the ripple current in an H-bridge, both in an inductive load and the DC link capacitor. Here's a really quick recap; if you want to get into more details, go back and read part I ...

posted by Jason Sachs on Aug 24 2013 under Power Electronics | Signal Processing 
Comments (1) |

Lost Secrets of the H-Bridge, Part II: Ripple Current in the DC Link Capacitor

In my last post, I talked about ripple current in inductive loads. One of the assumptions we made was that the DC link was, in fact, a DC voltage source. In reality that's an approximation; no DC v...

posted by Jason Sachs on Jul 28 2013 under Power Electronics | Signal Processing 
Comments (0) |

Lost Secrets of the H-Bridge, Part I: Ripple Current in Inductive Loads

So you think you know about H-bridges? They're something I mentioned in my last post about signal processing with Python. Here we have a typical H-bridge with an inductive load. (Mmmmm ahhh! It's g...

posted by Jason Sachs on Jul 7 2013 under Power Electronics | Signal Processing 
Comments (0) |

Hot Fun in the Silicon: Thermal Testing with Power Semiconductors

Here's a trick that is useful the next time you do thermal testing with your MOSFETs or IGBTs. Thermal testing?! Yes, that's right. It's important to make sure your power transistors don't overheat....

posted by Jason Sachs on Apr 20 2012
Comments (0) |

Which MOSFET topology?

A recent electronics.StackExchange question brings up a good topic for discussion. Let's say you have a power supply and a 2-wire load you want to be able to switch on and off from the power supply us...

posted by Jason Sachs on Sep 1 2011
Comments (2) |