Published:2010/7/11 21:11:00 Author:Li xiao na From:SeekIC
Nowadays, people always utilize the prepared power point to give a presentation. To make the speech livelier, the remote controller is widely accepted by them. There is no need to stand near the platform if the remote controller is used. Although the technology is not mature enough, more improvement will be made in the future.
The far infrared remote control technology was applied to the first generation of this device. The shortcoming of the far infrared device is the demand for accurate direction; therefore, the speaker should face toward the signal receiver. This kind of remote controller has gone out of use when the wireless radio frequency remote controller is invented. The advantages of this device are low power and environmental protection. Unlike the far infrared one, the wireless radio frequency is more convenient and practical, because it has no much requirement on direction. People can use this device in any place and with any gesture. But there are still some limitations, for instance, in order to control the device, a data connection must be established between the transmitting terminal and receiver.
The most essential thing for this device is the ability of anti-interference and stability. Therefore, many extra circuits are added to ensure the safety. Unlike the wireless intercom which can require the partner to say again, the remote controllers are always utilized in momentous occasions that may make a big mistake if the device is wrongly used.
In conclusion of the above contents, to choose a good device is very important. Some tips are provided for you to consider when you are planning to buy one. Firstly, you should carefully observe the appearance of the device. There are so many fakes in market that may similar with the genuine one. If you look carefully, some differences of the size or spray paint can also be found. Secondly, you can review the circuit by taking it apart. The quality of the circuit board has a large influence on the ability of anti-interference and compatibility. The selection of components related to the service life of the device. The components of genuine one are carefully studied, while the fakes utilize the cheap integrates to save cost. Thirdly, insert the receiver in the computer to see whether the contact is good or not. Then open several documents to see how many types of documents the device can control. Fourthly, test more than two devices to see whether they can disturb each other or not. The related circuit for the security system is TSS12G47S.
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