QVA11123

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Optical Sensors: Photointerrupters - Slot Type - Transistor Output

The QVA11123 is a type of slot photointerrupter which uses a transistor output. This type of optical sensor is used whenever an object needs to be detected when it passes across a light beam from one side of the slot to the other. This is commonly used in automation and control systems for measurement and monitoring. Additionally, it can be used for non-contact sensing of presence, absence or direction.

The QVA11123 has a 6mm sensing distance with a 0°C to +70°C operating temperature range. The output type is a NPN transistor, with a maximum sink current of 24mA. The response time of the unit is quite fast, at 10us, and it has a surge current of 1A. This is typically used when a large amount of current needs to be quickly and efficiently driven by a low-power electronic circuit. The supply voltage of the QVA11123 is 5V DC with a power consumption of <1mW.

The working principle of the QVA11123 is relatively simple. It works by using a light source on one side of the slot, either an LED or laser, and a phototransistor on the other. The phototransistor will detect a light beam which is emitted by the light source and reflect the beam back. When a target object passes across the slot, it is converted into an electrical signal. This signal is then sent to an output terminal which initiates an automated response from the system.

The QVA11123 can be used in a range of applications. Firstly, it can be used for positioning and displacement detection, for example, to detect the motion of a motor. Secondly, it can be used for presence and absence detection, for example, to determine when a part moves into or out of a certain region. Lastly, it can be used to measure speed, for example, to measure how fast an object moves between two points.

Overall, the QVA11123 is a type of slot photointerrupter which uses a NPN transistor output. It is used for positioning, displacement, presence, absence and speed detection under automated systems. The light beam emitted by a light source on one side is detected by a phototransistor on the other side, and this is converted to an electrical signal which initiates a response from the system. The QVA11123 is designed for use in a range of applications, with an operating temperature range of 0°C to +70°C.

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