| 摘要 |
<p>PURPOSE:To supply surely power and to improve safety in crime prevention by supplying a drive electric power to an arithmetic processing section in a card by employing an electromagnetic induction operation. CONSTITUTION:At one end side of a printed circuit board 1, receiving coils 2a, 2b, 2c as electromagnetic induction elements are print-wired. Respective terminals of the respective coils 2a, 2b, 2c are connected to respective input terminals of a rectifying terminal 3. This circuit 3 convertes a three-phase alternating current to a direct current and the direct current voltage outputted from the circuit 3 passing through an overvoltage preventing circuit 4 is inputted to a drive voltage input terminal of an IC element 5 comprising an arithmetic processing section, and memory sections 10, 11. A data input signal received by a data receiving coil 7 is amplified 14, and thereafter decoded to 'H' or 'L' level by a decoder 15 and fed to an I/O port 12. A data output signal outputted from an I/O port 13 is amplified 16, and then outputted from a data transmitting coil 6.</p> |
