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Sherlock Ohms
Content posted in April 2013
Charting the Failure History of a Bolt
Sherlock Ohms 
4/30/2013  11 comments
When a bolt fails, it might be best to look at the failure history of the bolt in its setting.
Bad Parts Plague Oscilloscope
Sherlock Ohms 
4/29/2013  27 comments
The part used to replace a bad part was also bad.
The Case of the Failed Leading Edges
Sherlock Ohms 
4/26/2013  6 comments
Be careful how materials are accepted and rejected. It may not make any sense.
What's the Frequency, Kenneth?
Sherlock Ohms 
4/22/2013  10 comments
It was OK when a radio station ran a tad above frequency limits. But when other radio operators in the area used the station's frequency as a base, things could get crazy.
Can a Robot Bend a Part?
Sherlock Ohms 
4/19/2013  14 comments
Can a robot bend parts? It depends on how dirty the die gets.
Screws Mess With Filter Design
Sherlock Ohms 
4/18/2013  3 comments
The filter had more rejection at the low end than at the high end since the equivalent capacitance coupling did not provide a transmission at high frequencies.
The Power Factor
Sherlock Ohms 
4/16/2013  9 comments
Post-lunch power surges caused a world of problems at a high-tech defense firm.
The Least-Obvious Signals Sometimes Bite You
Sherlock Ohms 
4/15/2013  4 comments
When is a digital circuit not a digital circuit? When somebody forgot that ultimately everything is an analog circuit, and things like L, R, and C combine in the most insidious ways to derail a design.
Car Radio Fires Up Check Engine Light
Sherlock Ohms 
4/12/2013  19 comments
Apparently the 2003 Saturn Vue has some interconnections between sensors that depend upon the integrity of the radio ground strap for proper operation of the engine and transmission control computers.
If It's Not the Undervoltage, It’s the Overvoltage
Sherlock Ohms 
4/3/2013  11 comments
In setting up automated test equipment, it seemed there was an undervoltage -- then it became an overvoltage problem.




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