Series:	*
Packaging:	Bulk
Part Status:	Obsolete
Mounting Type:	Through Hole
Package / Case:	Module, PC Pins, Slot Type

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Optical Sensors - Photointerrupters - Slot Type - Transistor Output

Optical sensors are an important part of modern automation and robotics applications. They offer a way to detect the presence or lack of an object by sensing changes in light transmittance. Photointerrupters are a type of optical sensors which are used to detect an object as it passes through a slot, or an interrupt, as it is referred to in the industry. The HOA1883-501 slot type with transistor output is one such photointerrupter device.The HOA1883-501 is an optically encoded photointerrupter with a 1.8mm slot width. It uses a novel internal structure to provide a symmetrical photodiode response. This ensures that regardless of the polarity of the transmissive object, the same output response is generated. The device is designed with a high offset voltage and optical isolation between the photo-transistor and the photodiodes which makes it robust and suited for precision operation in industrial automation and robotics applications.The HOA1883-501 is an optically encoded slot type photointerrupter which uses an internal equivalent circuit of a symmetrical photodiode as the sensing element. The photodiode responds to the light transmitted from the slot type photo-transistor which causes a voltage change in the output. The device is designed with a high offset voltage which ensures that it can detect very small changes in light transmittance. The circuit also uses an optical isolation which prevents any signal interference with the adjacent parts of the circuit.The HOA1883-501 has an active area of 1.8mm and an operating voltage of 5V. The device has a sensitive response for low transmittance objects, allowing for the detection of objects which are not visible to the naked eye. Operating temperatures can go up to a range of -40°C to +85°C. It also has a maximum response speed of 100 kHz and a wide response angle of 90°.In its application field, the HOA1883-501 is used for sensing the presence or absence of a transmissive object such as paper, plastic, metal or glass in industrial automation and robotics applications. Its wide response angle allows it to detect items which are placed at any angle in the vicinity of the detector. The high offset voltage provides a high degree of accuracy which makes the device reliable and suitable for precision applications.The working principle of the HOA1883-501 is based on the detection of the amount of light transmittance through the photodiode by the phototransistor. When an object is placed in the slot type photointerrupter the light passing through is blocked and the voltage difference between the photodiode and phototransistor is measured. This difference is then used to generate an analogue voltage signal which is used to further trigger other devices.In conclusion, the HOA1883-501 slot type photointerrupter is an optical sensor designed to detect a transmissive object passing through a slot. It has a wide response angle and is suitable for precision operation in industrial automation and robotics applications. The device works with an internal equivalent circuit of a symmetrical photodiode which is optically isolated from the phototransistor output. It has a high offset voltage allowing for a high degree of accuracy and a fast response time.

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