Need idea for NFC project

Discussion in 'Wireless & RF Design' started by dudeism, Jul 18, 2016.

  1. dudeism

    Thread Starter New Member

    Jul 13, 2016
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    I have to use my phone's NFC to turn ON another circuit or another system like zigbee or bluetooth. So far I have only shown how an LED glows using my phone's NFC. I used copper wire turns and connected an LED to it on a breadboard. What should I do next?
     
  2. DickCappels

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    Aug 21, 2008
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    What do you want to accomplish?
     
  3. dudeism

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    Jul 13, 2016
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    My project is to design an NFC transceiver system for contactless applications. However, it is not too specific. I can use NFC along with other systems like bluetooth . I have to analyze data rates and power consumption at different distances.
     
  4. dudeism

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    Jul 13, 2016
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    how much current and power is required for NFC tags?
     
  5. DickCappels

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  6. dudeism

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    Jul 13, 2016
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    Can you suggest some NFC circuits for transmitter and receiver?
     
  7. DickCappels

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  8. dudeism

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    Jul 13, 2016
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    Can you help me.In the first one which NAND gates he uses in transmitter schematic?
    I got it. Thanks.
     
    Last edited: Jul 22, 2016
  9. dudeism

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    Jul 13, 2016
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    I am making the circuit in multisim. Can you help me? Which crystal oscillator should I use?
     
  10. atferrari

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  11. DickCappels

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    The choice of a NAND gate is yours
     
  12. dudeism

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    Jul 13, 2016
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    Can anyone suggest an amplifier circuit for 13-15 MHz frequency?
     
  13. BobaMosfet

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    Isn't this thread a violation of TOS? In particular the 'transformerless power supply' clause. The OP stated they are attempting to power an LED using energy from an inductor only on their breadboard.

    I was informed that there is no 'grey area' or 'leniency' on this subject . If the TOS stated 'Non-MAINS-isolated power supply' instead, there would be no issue.
     
    Last edited: Jul 26, 2016
  14. dudeism

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    Jul 13, 2016
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    For the circuit, can the transmitter work without a micro controller?
     
  15. DickCappels

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    @BobaMosfet I am glad you read the TOS and are paying attention. Since it is not connected to the mains it is not in violation of the TOS.

    Yes, the output of the LM358 in the receiver circuit attached to post #14 (which is the output of the LM318)) can be used for data to as an on/off signal, such as blinking an LED or driving a relay, though to drive a relay you would require a transistor.
     
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