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THEORY OF OPERATION OPB885Z / OPB885CZ
The OPB885Z is a wide gap slotted (transmissive) switch with a
single mounting tab on the phototransistor side of the assembly.
Current forced through the LED provides a light signal with a center
wavelength of 890nm directed across the open gap of the switch
toward the phototransistor sensor. The Ic (ON) collector current of the
phototransistor is dependent on the amount of light striking it. When
a non-transparent target passes through the gap, the amount of col-
lector current is lowered significantly. The three graphs on the follow-
ing page show the effect of an opaque target passing next to the LED
tower, next to the phototransistor tower, and in the center of the slot.
14
Analysis of these graphs shows a narrower signal area next to both
towers. This effect is due to the beam angle and acceptance angle
of the LED and phototransistor of about 40° and the presence of a
.05”[1.27mm] wide aperture in front of each component.
OCB100-KIT
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相关代理商/技术参数
OCB100-KIT 制造商:TT Electronics / OPTEK Technology 功能描述:Auto-Calibration Design Kit
OCB-1250 制造商:Heyco Products Inc 功能描述:
OCB-1375 制造商:Heyco Products Inc 功能描述:
OCB-1500 制造商:Heyco Products Inc 功能描述:
OCB350L062Z 功能描述:光学开关（透射型，光电晶体管输出） Calibration Circuit With OPB350L062 RoHS:否 制造商:Omron Electronics 输出设备:Phototransistor 槽宽:3.4 mm 光圈宽度:0.5 mm 集电极—发射极最大电压 VCEO:30 V 最大集电极电流:20 mA 正向电流: 安装风格:Through Hole 最大工作温度:+ 85 C 最小工作温度:- 25 C 封装:
OCB350L125Z 功能描述:光学开关（透射型，光电晶体管输出） Calibration Circuit With OPB350L125 RoHS:否 制造商:Omron Electronics 输出设备:Phototransistor 槽宽:3.4 mm 光圈宽度:0.5 mm 集电极—发射极最大电压 VCEO:30 V 最大集电极电流:20 mA 正向电流: 安装风格:Through Hole 最大工作温度:+ 85 C 最小工作温度:- 25 C 封装:
OCB350L187Z 功能描述:光学开关（透射型，光电晶体管输出） Calibration Circuit With OPB350L187 RoHS:否 制造商:Omron Electronics 输出设备:Phototransistor 槽宽:3.4 mm 光圈宽度:0.5 mm 集电极—发射极最大电压 VCEO:30 V 最大集电极电流:20 mA 正向电流: 安装风格:Through Hole 最大工作温度:+ 85 C 最小工作温度:- 25 C 封装:
OCB350L250Z 功能描述:光学开关（透射型，光电晶体管输出） Calibration Circuit With OPB350L250 RoHS:否 制造商:Omron Electronics 输出设备:Phototransistor 槽宽:3.4 mm 光圈宽度:0.5 mm 集电极—发射极最大电压 VCEO:30 V 最大集电极电流:20 mA 正向电流: 安装风格:Through Hole 最大工作温度:+ 85 C 最小工作温度:- 25 C 封装: