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38 khz IR diode driver

Discussion in 'General Electronics Discussion' started by Veganode, Sep 29, 2014.

  1. Veganode

    Veganode

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    Jul 31, 2014
  2. Arouse1973

    Arouse1973 Adam

    5,164
    1,078
    Dec 18, 2013
    The maximum current for the 2N2222 is 800mA which would require a clip on heat sink or large copper area on the PCB connected to the emitter. The maximum current for the LED is 1050 mA which is too much for the transistor. Now this does depend on whether your pulsing the LED or if it's on continuous and whether you want it at full power. It is likely you will need to change all three components or as a minimum depending on your answers to my questions just the two resistors.
    Adam
     
    Harald Kapp likes this.
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