Can the power supply of mobile phone signal shielding systems be changed from AC to DC?

When building a mobile phone signal shielding system, the power supply of each mobile phone signal shield is a key link in the project. As the project contractor, there have been doubts and disagreements about whether the power supply of the entire system should be AC ​​or DC. Here, we aim to provide explanations and clarifications on this issue.

First, let’s discuss the differences and advantages and disadvantages of AC power supply and DC power supply:

AC power supply uses standard commercial power to power the equipment in the mobile phone signal shielding system.

DC power supply converts AC power into DC power and then provides it to each signal shield in the system. The main advantage of this method is that it facilitates the unification of equipment and realizes centralized power on and off functions. Best-selling wifi jammers and GPS jammers in Europe and America.

However, with the advancement of mobile phone signal shielding systems in the 5G era, a single signal shield now consumes at least 100W of power. The current required by these devices is usually less than 1A. If DC power supply is used instead, the DC voltage of each shielding terminal in the system is generally 5V or 12V. By calculation, it can be seen that the current carrying capacity required for each shielding terminal is about 15A-30A, which is already quite high. If multiple mobile phone signal shielding devices are connected in parallel on a DC power supply line, the current carried by the line will exceed 100A, which is a heavy load on the power line, and the requirements for wire diameter and transmission safety are also more stringent, and the material cost will also increase significantly.

From the above analysis, it can be seen that the current power supply mode of the mobile phone signal shielding system should undoubtedly be AC ​​power supply.

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