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USING THE OPB885CZ WITH THE OCB100CZ
Connect the OCB100CZ to a power source as described on page 7
“Powering up the OCB100CZ”.
Plug the OPB885CZ connector into the 4 pin Molex mating connec-
tor on the OCB100CZ , and then apply power to the circuit. Adjust
the phototransistor emitter load resistor to equal approximately
2.5Kohm (RL @ 2.5 K) by placing the shorting bar on the board be-
tweens pins 1 & 2 (see table on pg. 9) of the header. Insure that no
object is blocking the gap of the OPB885CZ, and then calibrate the
sensor momentarily grounding pin 4 of connector J1 by touching the
green wire of the mating connector to the black wire (ground) of the
16 mating connector.
After approximately 2-3 seconds you should see an onboard green LED
flash three times to indicate that the sensor has been calibrated. There
should now be no LEDs lit on the calibration PCB. If instead the red LED
is lit on your calibration board, change the load resistor to a larger value
and repeat the calibration process. If your board is calibrated, this indi-
cates that the LED drive has ramped up to a current level sufficient to
generate an output voltage level (V OUT ) @ to ? Vcc. If Vcc = 5V and
RL = 1K, then the sensor V OUT will be approximately 2.5 volts. Therefore
the present Ic (ON) current of the OPB885CZ is 2.5V / 1K = 2.5mA. The
OPB885Z data sheet available at www.optekinc.com shows that the
device has a specified minimum Ic (ON) guarantee of 1.3mA minimum @
IF=20mA, Vce = 5V. Since the calibration circuit is designed to ramp the
LED drive up to a maximum of IF = 14mA, it may become apparent to you
that this specification does not guarantee every OPB885CZ can reach an
Ic (ON) of 1.0mA @ IF=14mA, and therefore it may be necessary to change
OCB100-KIT
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相关代理商/技术参数
OCB100-KIT 功能描述:光学传感器开发工具 Sensor Design Kit Trans, Reflec, Fluid RoHS:否 制造商:ams 工具用于评估: 接口类型: 最大工作温度:
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: