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RF emissions and FCC Part 15: EMI woes and cures
My first exposure to EMI (electromagnetic-interference) measurement was in trying to make my multiport, unshielded-twisted-pair Ethernet-hub card comply with FCC Part 15 Class A in a multicard chassis that leaked RF like a sieve. Details... more...
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...
Serendipity revisited: Fortuitous capacitor solves RF - reception problem in garage - door opener
A former radio-station engineer recalls how a capacitor in his pocket helped keep peace on the homefront. Details... more...