As we all know, the QR code access control system has high requirements for the stability of the power supply. It can be said that if the stable operation of the access control system is required, a good power supply is necessary. So what are our requirements for power supply? Here we mainly focus on the following aspects.
It is not only required to achieve power, but to achieve stable power and stable current output.
Test method: test the actual output current and voltage of the power supply through a multimeter to see whether the output voltage and current can be at the rated output value.
Short circuit protection function is mainly used to prevent loss caused by unstable voltage or wrong line connection.
Test method: check whether the manual has this function first, and if so, conduct a wiring test.
Here, the power supply break protection of the QR code access control system can automatically cut off other power supplies, such as cameras, when using the battery power supply, so as to ensure the basic operation of access control.
Test method: check whether the manual has this function first, and if so, conduct a wiring test.
Constant current charging ensures the power supply of other front-end equipment, prevents overcharge and discharge of the battery, and prolongs the service life of the battery.
Test method: test the actual output current and voltage of the power supply through a multimeter to see whether the output voltage and current can be at the rated output value.
Multiple circuit outputs, and the failure of one circuit will not affect the normal operation of access control.
Test method: Here we can judge whether there is multi-channel output by the number of output ports of the power supply.
Above is the introduction of the type selection test of QR code access control system power supply, hoping to help you.
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