Optical Switch
Optek Technology, Industrial Sensing & ControlRequest Info
To provide machine and automation design engineers with a reliable
means of noncontact interruptive object sensing, TT electronics Optek Technology
has developed a low-profile switch designed with a wider slot to accommodate more
applications. The OPB200, an optically triggered switch, contains an 890-nm IR LED
and a phototransistor paired in an opaque plastic housing. With its wider sensing
gap and lower board-mounted profile, it is suitable for most types of machine automation
circuits, especially for assembly line automation and machine safety/security applications.
When no object is present in the slot, the output phototransistor conducts current
to maintain the circuit. When an object enters the slot and blocks the beam of IR
light from the LED, the output switches to the “off” state to interrupt
the circuit.
http://www.ttelectronics.com
/Buyers_Guide/Optek_Technology_Industrial_Sensing_Control/c10802
Published: January 2011
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