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What are the details of the wireless transmitter module?

163 Published by xia, Crystal Jul 01,2019

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The wireless transmitter module adopts FSK half-duplex working mode, and the automatic filtering noise has an automatic avoiding function to avoid simultaneous transmission and interference at the same frequency, similar to carrier sensing, and the work is stable and reliable. So what is the price of the wireless transmitter module in terms of transmission time and power supply selection?

Radio transceiver module application.

Radio transmission module transmission time schedule:

The wireless transmitting module is not suitable for continuous transmission for a long time under working conditions, otherwise it will cause the power amplifier tube to overheat and burn out. It is recommended that the continuous transmission time should not exceed 3S and the ratio of the transmission/stop time is less than 1, that is, the disconnection time is longer than the transmission time. When the wireless transmitting module uses the receiving and transmitting components in a relatively close distance, the working voltage can be appropriately reduced, and the transmitter can be continuously transmitted for a long time. For example, the 9V machine uses 6V power supply, and the low voltage uses 3.6V power supply. The transmission distance is reduced by about half. Of course, the 9V wireless transmitter module should be used at 12V, the distance will be farther, but the time requirement is stricter. The stationmaster will be hot for two seconds, so it can only be in 1 second. Inside, and the intermittent time should be more than 3 seconds. If you work for a long time, you can’t use 12V. You can’t even 9V. Otherwise, if you burn it, you will lose a lot.

Wireless transmitter module requirements for power supply selection:

The peak current of the wireless transmitting module is about 1A (the current meter measures the average effective value, the peak value is about 1.4 times. When there is data modulation, the current meter measures only the peak value due to the duty ratio. Therefore, the power supply must have a low internal resistance and can output a rated current of about 1A. According to our test and comparison results, the mains supply is best powered by DC voltage regulator, followed by rechargeable battery packs with various capacities of 300mAH or more. For devices that are carried around but are not commonly used, 9V stacked alkaline batteries (9V580mAH, short-circuit current up to 6A or more) can also achieve good results. If the internal resistance of the power supply is high, the power will be reduced or the parasitic low frequency will be self-excited and the transmission distance will become close.

Shenzhen Yaoertai Technology Co., Ltd. is specialized in (RF) wireless transmitter module, wireless receiver module, wireless remote control, wireless receiver, wireless controller, infrared detector, door magnet, smoke detector, gas alarm, anti-theft high-tech enterprises that develop, manufacture and sell related products such as alarms and smart gateway kits. Wireless remote control products are widely used in remote control electric doors and windows, retractable doors, garage doors; remote control lights, switches, communications and security, etc. Professional supporting garage door factory, GPS factory, security factory, electric control lock factory, automobile factory, electric door and window , gateway, industrial control, etc.

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