Content posted in March 2014
Colossus Mark 1
Steve Taranovich 3/31/2014 8 comments
The National Museum of Computing located at Bletchley Park celebrated the 70th anniversary of Colossus, the first partially programmable electronic computer. Colossus went into service on February 1944, used for code breaking and the deciphering of Lorenz-encrypted communications used between Hitler and his generals.
APEC 2014: Transforming Energy Management
Steve Taranovich 3/20/2014 9 comments
Comments on Monday’s opening Plenary session at APEC. Dave Freeman, CTO of power for TI, reminded us about resource savings again with a great example – something that kept us on the hook waiting for the real answer.
Excel: Conditional Formatting
Aubrey Kagan 3/12/2014 40 comments
When you right click on an Excel worksheet cell, you can change its numeric type, alignment, background color, and other properties. But did you know that you can have the cell change its format if different conditions are met?
Bipolar Transistor Circuit Design & Analysis, Part 1
Howard Skolnik 3/10/2014 30 comments
There are many applications for one or two transistors. These include voltage and current amplification. Described here, in Part 1 of a series, is an easy to understand way of visualizing the operation of a bipolar transistor in its linear operating region.
Temperature Measurement, Part 1
Aubrey Kagan 3/6/2014 29 comments
This series of Temperature Measurement blogs was first published on the late, lamented forum, Microcontroller Central. I have modified it very slightly.
This article explains how the latest-generation SiC FETs are ideally suited to new inverter designs with lower losses than IGBTs and proven robustness against short circuits, even at high temperatures and under repetitive stress
There’s a further cool thing you can do with a spreadsheet that most SPICEs can’t. That’s to use the spreadsheet ‘solver’ functionality to adjust component values in the search for a better-fitting circuit – or even to find a set of component values for a circuit you can’t otherwise design.
Infineon MOSFETs have been embedded into PC boards by Schweizer Electronic AG
You now need to adjust component values to achieve some system goal, such as predefined frequency response or time behaviour, and there’s no closed method for working out those values.