SGH-X670_schematics.pdf GSM mobile phones Samsung - Service manuals, schematics, documentation, applications, datasheets, electronics
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Hot, cold, and broken: Thermal - design techniques
Variations in temperature can make a circuit act unpredictably or even cause catastrophic failure. Here are some tips on what to look out for in your designs' reactions to temperature extremes. Details... more...
Yet more LED applications, a power sequencer, and an old Design Idea returns
Just when I think that I’ve seen all possible permutations of multiple-LED driver and controller circuits, readers of Design Ideas devise yet another clever method of lighting ‘em up. Based on Atmel’s ATTiny13 single-chip microcontr … Details... more...
Power apps, Prony rides, and the usual batch of good links
This batch of Design Ideas deals mostly with power. A friend related an incident at a design review, in which the lead engineer informed a corporate exec that the project was only 3 dB over its budget. The exec went away happy (for the moment), and t … Details... more...