Long distance infrared reflective switch

OPB732 Series long distance infrared reflective switch has been employed in a 6kW wind turbine for RPM sensing. Placed at the turbine rotor, the switch is used internally to sense RPMs, and that data is then transmitted to a customer-accessible Web site via GPRS. In addition to wind turbines, the OPB732 reflective switch is ideal for use in assembly line and machine automation, equipment security, door sensor, machine safety, end of travel sensor, and non-contact reflective object sensor applications. The OPB732 Series switch has a reflective distance of more than 1 inch, depending on circuitry. The reflective switch configuration includes an infrared LED and phototransistor, and uses an opaque housing to reduce the sensor’s ambient light sensitivity. The OPB732 Series infrared LED features an 850nm wavelength and a power dissipation of 100mW. Maximum forward current is 50mA and maximum forward voltage is 1.8V. The output phototransistor features collector-emitter voltage of 30V, collector DC current of 50mA, and power dissipation of 100mW. Operating temperature range for the long distance reflective switch is -40ºC to +85ºC. The OPB732 Series assembly is offered with PC board through-hole pins or 24”, 26 AWG wires. The phototransistor can be configured as a common collector or common emitter device.