0936030013

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0936030013 (hereinafter referred to as 936) is a type of integrated structure, split type infrared detector, which is currently widely used in smoke detectors, gas detectors, and industrial automation control systems.

The 936 device is mainly composed of an integrated automatic level control circuit, a control circuit, an infrared emitting diode (IR LED) and an infrared detector diode (IR detector). The specific circuit of the device is shown in Figure 1. The 936 is usually powered by DC 5V power supply, and its output range is normally 0V~5V.

The working principle of 936 is as follows. Firstly, the voltage across the IR LED is applied to the dry contact, the contact is closed, and the driving voltage is applied to the power grid, so that the IR LED is turned on. At this time, the IR LED emits infrared light through the opening at the top of the housing, and the emitted infrared light radiates into the surrounding environment. If the smoke enters the detecting chamber, the smoke particles absorb the infrared light, and the IR detector receives a certain amount of infrared light energy. After this, the energy received by the IR detector will cause the output voltage to drop.

936 devices have a wide range of application fields. In the smoke detector, the device are used to detect changes in the concentration of smoke particles in the air. When the smoke density exceeds a certain threshold value, the output voltage of the 936 is reduced, so that the alarm can turn on or alarm sound can be sounded. In the gas detection field, the device can be used to detect the gas concentration in the air, which can be used in gas leakage alarm or fixed gas concentration detection. In industrial automation control systems, it can detect the position of the object to realize control and feedback. In addition, the device can also be used in military and other fields.

In summary, 936 is a kind of split type infrared detector with integrated structure, which is widely used in petroleum, chemical, military, industrial automation, medical and other industries. It has the advantages of miniaturization, low power consumption, high accuracy and reliable performance. It also can implement temperature compensation adjustment, which is of great significance for detecting the environment.

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