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HY301-21 4mm Slotted Optical Interrupt Sensor

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Model : HY301-21
Output Type : Photo Transistor
Peak Emission Wavelength : 940nm
IR Diode Forward Current : 50mA
IR Diode Reverse Voltage : 5V
Transistor Power Dissipation : 75mW
Transistor Collector Current : 20mA
Photo Transistor Emitter-collector Voltage : 5V
Number of Pins : 4
Slot Width : 4mm
Slot Depth : 8mm

49.00 59.00 "inc. GST"

In stock

HY301-21 is a slotted Opto isolator module, with an IR transmitter & a photo diode mounted on it. Performs Non-Contact Object Sensing. This is normally used as positional sensor switch (limit switch) or as Position Encoder sensors used to find position of the wheel. It consists of IR LED and Photodiode mounted facing each other enclosed in plastic body. 
Applications
  • DC motor position / velocity control
  • Position and velocity servomechanisms
  • Factory automation robots
  • Numerically controlled machinery
  • Computer printers and plotters
Working
When light emitted by the IR LED is blocked because of alternating slots of the encoder disc logic level of the photo diode changes. This change in the logic level can be sensed by the microcontroller or by discrete hardware. This sensor is used to give position feedback to the robot or as Limit switches. 

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