The power of IC cardcircuit is supplied by the power of electromagnetic wave from reader.
而卡上电路的工作电源由读卡器发出的电磁波能量提供。
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You can build a circuit that generates a CSYNC signal for CARDS that don't do this already (see Resources), but it is generally easier to just purchase a card that already generates it.
During a seven-day auction on eBay that ended on May 29, Novocin says he sold four items, including an X-Band Weather Radar Modulator for and a high-frequency radio circuitcard for .