Edge-mounted switch, soldered to printed circuit board, gives direct sliding contact. In the graphic to the bottom left, conventional side push switches typically measure 4.5mm deep and require a mechanical actuator to connect the user button and the dome.
Expanding LCDs on portable electronic equipment leave less board space for switches. That's one reason many of today's handheld devices feature side-push keyblock switches. Precise alignment requirements, however, drive up manufacturing cost and assembly time.
Edge-mounted switches present a low-cost alternative. And, measuring as little as 3.0 mm deep, they save even more board space. Soldered directly to the pcb, these ultra-miniature switches offer long life (to one million cycles), a 0.25- or 0.70-mm stroke, and an operating force from 1 to 5N.
K. Takamitsu, National Panasonic, Okayama, Japan; Tel: +81 6 6908 7304; Fax: +81 6 6906 1619;PAN50232@pas.mei.co.jp
At the Design News webinar on June 27, learn all about aluminum extrusion: designing the right shape so it costs the least, is simplest to manufacture, and best fits the application's structural requirements.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This radio show will show what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.