TSOP32238

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Optical Sensors - Photo Detectors - Remote Receiver

Optical sensors are an important part of modern electronic systems. They consist of devices that detect, measure, and/or process visible light. The TSOP32238 is an optical sensor which is commonly used in remote control system or proximity sensing applications. It is an infrared phototransistor that utilizes an integrated infrared light filter. This allows it to detect light wavelengths in the range of 940nm to 950nm. This article will discuss the application field and working principle of the TSOP32238.

Application Field of the TSOP32238

The TSOP32238 is most commonly used for two main applications – remote control systems and proximity sensing. In the case of remote control systems, the TSOP32238 is used to receive signals from a remote controller, such as those commonly used for televisions or other household electronic appliances. The TSOP32238’s ability to detect light in the infrared wavelength range makes it ideal for this application, as the wavelengths used in most remote controllers are in the range of 940nm to 950nm.

The TSOP32238 is also used in proximity sensing applications, such as those which are used in certain home security systems. A proximity sensor uses an infra-red LED and the integrated filter of the TSOP32238 to detect objects in a specified area. When the object is close enough, the infrared LED will be activated and the TSOP32238 will be able to detect the light, triggering an alarm.

Working Principle of the TSOP32238

The TSOP32238 is an infrared phototransistor that utilizes an integrated infrared light filter. It is composed of an infrared-sensitive light-activated transistor in a plastic package. The TSOP32238 is triggered when it detects infrared light of certain wavelengths, usually between a range of 940nm and 950nm. It is triggered by a signal from a remote controller or a proximity sensor, which will activate the infrared LED to emit light of the right wavelength.

When the TSOP32238 detects the light, it triggers its transistor, which is then connected to an electronic circuit. The current passing through the circuit will depend on the amount of light detected by the TSOP32238. This can then be used to activate downstream electronic components, such as a solenoid or other actuator, or to alert an alarm system. Thus, the TSOP32238 can be used to receive a signal from a remote or a proximity sensor and then use that information to activate a downstream device.

Conclusion

The TSOP32238 is a versatile optical sensor that is commonly used in remote control systems and proximity sensing applications. It is designed to detect light in the range of 940nm to 950nm, thus making it ideal for detecting signals from a remote control or proximity sensor. The TSOP32238 utilizes an integrated infrared light filter and a light-activated transistor to detect the light and trigger its transistor, which can then be used to activate downstream components.

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