SENSORS: TT Electronics’ OPTEK Technology has developed a small surface mount packaged photo light sensor with a digital output ideal for applications with limited space. Designated the OPL611 Series, the sensors feature data rates to 250kBaud and consist of a Photologic® chip encapsulated in transparent molded plastic, providing optical coupling as well as mechanical protection.
The OPL611 Series surface mount sensors measure just 3mm x 3mm with a height of 1mm, and are mechanically and spectrally matched to OPTEK’s OP180, OP200, OP250, OP270 and OP280 Series infrared LEDs.
Available with buffer and inverter 10K internal pull-up as well as open collector outputs, the sensors feature a direct TTL/LSTTL CMOS interface. Minimum input power is 1.0mW/cm2, VCC ranges from 4.5 to 16V, and operating temperature ranges from -40 to +85C.
The first Tacoma Narrows Bridge was a Washington State suspension bridge that opened in 1940 and spanned the Tacoma Narrows strait of Puget Sound between Tacoma and the Kitsap Peninsula. It opened to traffic on July 1, 1940, and dramatically collapsed into Puget Sound on November 7, just four months after it opened.
Noting that we now live in an era of “confusion and ill-conceived stuff,” Ammunition design studio founder Robert Brunner, speaking at Gigaom Roadmap, said that by adding connectivity to everything and its mother, we aren't necessarily doing ourselves any favors, with many ‘things’ just fine in their unconnected state.
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