Author Archive for gpitel

23660 In an effort to make my life easier I decided to put PitelSPOT on its own dedicated server. In the past, all my web applications were run from my workstation, which has obvious disadvantages. I appologize to all those cutoff mid-article because I was doing some routine MATLAB/Vista reboot.  I wanted to share the [...]

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Expect server outages this week. PitelSPOT is getting a major upgrade that will be described in a later post.

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I decided to post my University of Illinois doctorate dissertation. If you have questions, please leave a comment below so we can have open discussions. This dissertation applies large-signal and time-domain models along with digital control to achieve fast control performance and to quickly test/design multi-block power controllers. Fast controls are needed for motherboard level [...]

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Somehow, my wife and I managed to share a car for the past five years. This arrangment worked because we live in a small town, both work at the University, and are attached at the hip. However, I am about to graduate and will need a car to commute. My wife still has about a [...]

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Battery Selection Battery life is often measured by cycle life, the number of full charge/discharge cycles before the battery reaches 80% of its original capacity. Keeping the discharge current relative to the battery’s ampĂ—hour capacity low and the discharge shallow improves battery longevity. Typical 12 V sealed lead acid (SLA) cells, like the ones found [...]

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If you are reading this post, you probably are experiencing decreased range and speed on your Go-Ped electric scooter. I too have experienced these problems, but I am going to share some solutions I came up with. I purchased a Go-Ped ESR-750 scooter this summer for transportation in Mountain View, CA for a summer internship. [...]

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A few years ago my wife Sheryl and I were very involved with freshwater fish.  In our 120 gallon show tank we had what are refered to as the “King of the Freshwater Fish,” the Discus.  A couple of our discus are shown on the left.  One of the greatest pains in maintaining a Discus tank is their finicky [...]

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Well, a full year has passed and the PitelSPOT is still active.  Although post frequency is about half from what it was at the start, we are still going strong.  PitelSPOT got a very special gift for its first birthday – an UPGRADE!  It now had a more powerful Intel Q6600 Quad Core and 2GB of memory.  [...]

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Description The attached zip file is a plot utility geared for scientific figures in publications. The plot utility sizes figures and text consistently and compactly; something the default Matlab plot function does do readily. Formatting rules were originally developed for IEEE publications and thus adheres to their specified conventions. Capabilities Figures can span one or [...]

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There are many ways to measure a dc-dc converter’s inductor current for use in control. Direct-current resistance (DCR) is one low loss and cost method for measuring this current, it consists of a series RC network in parallel with the inductor. The RC network has some advantages over other methods: it has lower I2R losses [...]

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Archive for Grant Pitel.

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