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Optical Sensors – Photointerrupters – Slot Type – Transistor Output

MOC70P3 Application Field and Working Principle

The MOC70P3 optical slot type photointerrupter, manufactured by Omron, is a transistor output type photo interrupter with an LED emitter and a detector, housed in an 8-pin compact miniature package. This unit has a built-in circuit that amplifies the detection signal and transmits it to the output transistor when an object passes through the slot.

The main application fields for the MOC70P3 photointerrupter are paper transport control, copy machine paper registration, trapping control systems and cam position detection. All these systems require a reliable and accurate detection device for signaling the movement of an object.

Working Principle

The MOC70P3 is equipped with an infrared LED emitter and an NPN transistor-type detector. When an object passes through the slot, the LED light output is interrupted and the transistor output is activated. The LED light output is amplified and transmitted to the output transistor as an ON signal. When the object passes through the slot, the LED light output is restored and the transistor output is deactivated.

The MOC70P3 is designed to have a detection range of up to 7mm with a maximum working temperature of 85°C. The unit also has an open detection angle of 160°, which provides excellent detection accuracy and reliability.

Features and Advantages

• Compact miniature package with 8-pins
• High-speed response of 2.5ms with a delay time of 500ns
• Highly accurate detection of up to 7mm
• Highly reliable operation at temperatures up to 85°C
• Wide viewing angle of up to 160°

Conclusion

The MOC70P3 from Omron is a reliable and accurate optical slot type photointerrupter with an LED emitter and a detector, housed in a compact miniature package. The unit has a detection range of up to 7mm with a width detection angle of 160°. The high speed response of 2.5ms, combined with the wide viewing angle, provides reliable detection accuracy and reliability in applications such as paper transport control, copy machine paper registration, trapping control systems and cam position detection.

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