Dirty Money
Kirt's Cogitations™ #121

RF Cafe University "Factoids," "Kirt's Cogitations," and "Tech Topics Smorgasbord" are all manifestations of my ranting on various subjects relevant (usually) to the overall RF Cafe theme. All may be accessed on these pages:

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Dirty Money

Filthy lucre takes on a whole new meaning with the new 1-euro and 2-euro coins. A recent study concludes that the coins release up to 320 times as much nickel as European standards permit for prolonged contact with the metal - a common skin allergen. The culprit is the anodic action between the coin's double nickel alloy construction. A 40 mA current flows between the two alloys at the interface. "It's like a mini-battery," said one investigator. The current leads to corrosion and the release of nickel ions. Job Announcement: The E.U. is in desperate need of a junior level college chemistry major to consult before settling on the design of the new euro coins.

Anatech Electronics RF & Microwave Filters - RF Cafe Website

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a lady's voice announced "You've Got Mail" when a new message arrived...