EEVblog #105 – Electronics Thermal Heatsink Design Tutorial

A follow on from some of the recent blogs that have involved basic thermal heatsink calculation. This time around Dave takes you though the basic theory of thermal design and how heatsink calculations work. Then there are some real world temperature measurements to see how close to the theory we get.

How do you read a heatsink thermal response graph? What is emissivity? It’s all here in thermal design 101.

EEVblog #105 - Electronics Thermal Heatsink Design Tutorial [ 79.32 MB ] Download (2212)

EEVblog #102 – DIY Constant Current Dummy Load for Power Supply and Battery Testing

Dave grabs a few junkbox parts and builds a useful constant current load for switch mode power supply, battery testing, and other applications.

EEVblog #102 - DIY Constant Current Dummy Load for Power Supply and Battery Testing [ 0:01 | 45.31 MB ] Download (3055)

EEVblog #98 – Microsoft InstaLoad Battery Technology – Patent Busting Time?

Microsoft’s new Instaload battery technology allows batteries to be inserted into a product either way around.
Is it one of those brilliant “why didn’t anyone think of that before” moments, or just another silly patent on a really obvious idea?
Is it workable in practice?
Can YOU bust the patent by finding prior art before 2006?

See the Microsoft Patent here:
http://www.google.com/patents/about?id=hVXGAAAAEBAJ

OR DOWNLOAD THE FULL PDF PATENT HERE: http://www.eevblog.com/files/Microsoft%20Instaload%20Patent%20US7527893.pdf

You can get Dave’s T-Shirt here:
http://www.eevblog.com/store

EEVblog #98 - Microsoft InstaLoad Battery Technology - Patent Busting Time? [ 32.79 MB ] Download (2131)

EEVblog #58 – Warm and Fuzzy FPGA Troubleshooting

Look, up in the sky, is it a hardware fault?, is it a software fault?, no, it’s a bloody FPGA

EEVblog #58 - Warm and Fuzzy FPGA Troubleshooting [ 43.89 MB ] Download (1842)

EEVblog #53 – Mr Murphy and Microchip PIC Silicon Bugs

Dave tangles with Murphy’s Law and Microchip silicon bugs with his latest PIC project.

The PIC24FJ256 errata

And that Jim’s Mowing Franchise looks pretty tempting.

EEVblog #53 - Mr Murphy and Microchip PIC Silicon Bugs [ 0:01 | 19.22 MB ] Download (1781)