Product Bulletin OPB680 April 1998
Slotted Optical Flag Switch
Types OPB680, OPB680-20
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Features • Photo
transistor output • Mechanical switch replacement • Printed circuit board mounting • Enhanced signal to noise ratio • Lever force options Description
The OPB680 consists of an
NPN photo
transistor and an infrared emitting diode in a molded plastic housing.
The photo
transistor has an enhanced low current roll-off which improves contrast ratio and immunity to background irradiance.
A lever arm actuated flag interrupts the light beam, switching the output between states that can readily drive logic gates.
The lever can be actuated by a passing paper sheet without damaging ...