There are many types of infrared receiving heads, and the pin definitions are different。 Typically, there are three pins (power pin, ground and signal output pins)。 The receiving head of the corresponding mediation frequency should be selected according to the difference of the modulated carrier at the transmitting end。 Below, Chengguangxing photoelectric infrared receiver manufacturers to explain the following considerations for using infrared receivers:
Matters needing attention 1, physical dimensions, pin location, packaging process: some commonly used products, should pay attention to its pin differences, and the manufacturing process, under normal circumstances, the product of the compression molding process is more resistant to interference, and these products also have corresponding The iron shell.
Note 2, current: 0.5mA, 0.8mA, 1mA, 1.2mA, 2mA, Chengguang Xing photoelectric receiver head current can achieve 2mA.
Note 3: Voltage: The voltage of the infrared receiving head has a wide voltage and a single voltage。 In general, single voltages are 5V and 3。5V。
Note 4: Distance: 5m, 8m, 10m, 12m, 16m, 20m, 25m, 28m, 35m, 70m。 In general, the shorter the distance, the lower the price。
Note 5. Pin length and angle: 16mm, 21mm, 25.5mm, angle 30°, 45°, 60°. Under normal circumstances, the receiving angle has little effect on the product, so most products are now 45° receiving.
Note 6, receiving frequency: 38KHz, 36KHz, 40KHz, 32.7KHz, 56KHz, 20KHz, usually, 38KHz for remote control, 20KHz for 3D glasses. It is also important to choose different frequencies depending on the situation.
Note 7. Working temperature: -30 ° C -85 ° C.
Note VIII, welding temperature and time: 260 ° C (240 ° C) ≤ 5 seconds, welding temperature and time is too high, too long will cause damage to the infrared receiving head.
Note 9。 Sensitivity: The same product can be measured on different devices and in different environments。 In different environments, attention should be paid to the interference of the surrounding environment, the interference of light and the different light intensity, which have an influence on the sensitivity of the infrared receiving head。
The infrared receiver should have a filter to filter out white light. Because the strong light directly into the infrared receiving head, there is electromagnetic interference, the infrared receiving head under the environmental conditions such as the frequency flash source and the strong infrared heat source will affect the reception.
The above is the introduction of the use of infrared receivers, to learn more about infrared receivers, welcome to visit Shenzhen Chengguangxing Optoelectronics official website http://www.pinchedi.com/.