EM card reader some information arising from 125KHz circuit and induction coil drive to the radiation of electromagnetic waves, when the ID card readers magnetic field range of the antenna, the card inside the receiver coil electromagnetic energy of the circuit card of its rectifier, regulator After the card system as the operating voltage, and from the received pulse modulation amplitude modulation and the information sent to the internal control logic, internal data will be sent via the antenna, circuit card reader through the shaping, amplification, the received code to a single man decode chip machine.

Packet : 111186759em-2008.rar filelist
EM卡\EM4100_DS.pdf
EM卡\EM4102_DS.pdf
EM卡\H4001.pdf
EM卡

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