this I feel is a typical troubleshooting scenario. many a times lack of understanding of the topology of the circuit , component charactetistics may result in this. for example an opamp based schmitt trigger may appear like a non inverting amplifier ( first impression on circuit topology) and if one has to torubleshoot a problem , lack of understandign of the topolgy may create more errors than a possilble solution.
Rob, it may be more cynically stated that "the customer always lies." Or, at least, "the customer never tells the whole truth." Troubleshooting such problems almost always means you have to be a Missourian: "Show me" or it didn't really happen.
Here's another good example of why it's important to dig down to the real problem. What appears to be the problem at first may not actually be the problem. We're seeing this again and again in the Sherlock Ohms posts.
Siemens and Georgia Institute of Technology are partnering to address limitations in the current additive manufacturing design-to-production chain in an applied research project as part of the federally backed America Makes program.
Most of the new 3D printers and 3D printing technologies in this crop are breaking some boundaries, whether it's build volume-per-dollar ratios, multimaterials printing techniques, or new materials types.
Independent science safety company Underwriters Laboratories is providing new guidance for manufacturers about how to follow the latest IEC standards for implementing safety features in programmable logic controllers.
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