Business-card is a transistor amp

Cory Doctorow 10:36 pm Sun Mar 21, 2010

From Make's Matt Mets: "Aaron Alai designed this kicking electronic business card, which demonstrates how transistor amplifiers work. When you touch two electrodes on it, a small amount of current is conducted through your body, which is then amplified by a transistor to light an LED. I like the clean design, which is both functional and descriptive of how it works."

Aaron calls it a "small interactive exhibit" in business-card form. I've always had a passion for great cards — this one is a cake-taker. I stand in awe.

Business Card / Transistor Amplification

(Thanks, Eric!)

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