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Thread: IR Communication by using PT2248/PT2249A

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  1. #1
    DIY Junior Member munhann's Avatar
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    Jul 2011
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    butterworth, Malaysia
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    Exclamation IR Communication by using PT2248/PT2249A

    HI All,
    Recently i build a IR communication circuit and still fails to figure out what went wrong..
    I hope can get your expert help on this. Below are component list and attach files is my circuit schematics. Please help and this is urgent!!

    TX IR Component List
    - C1 = C2 = C3 = 120pF, C4 = 10nF (Polarized Capacitor)
    - XTAL = 455Khz
    - D1 = IN4002 and D2 = IN4148
    - Q1 = Q2 = PNP A1015
    - LED0 = Infrared Transmitting LED

    RX IR Component List
    - C1 = 100pf
    - R1 = R2 = 39K
    - 1738 IR Receiver (38Khz)
    - PNP A1015
    - Receiver IR Sensor
    Attached Images Attached Images   

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