IR transmitter

Discussion in 'The Projects Forum' started by shico90, Jul 22, 2010.

  1. shico90

    Thread Starter New Member

    Jul 22, 2010
    excuse me with these questions
    now the IR receiver is working and i tested it with the tv remote and it works fine
    and i made a transmitter circuit using one led to generate a frequency with 38 KHZ and i can see with my eye that the receiver is getting the signal, because the visible led in the receiver circuit is blinking at that frequency
    the problem is the voltage generated at the receiver is very small and it is like 0.1 v or something that i can see it by voltmeter or with a led and see the very small change in the led brightness that is opposite when i use the tv remote it actually generate 5 V or something and it is very clear
    so now i need to improve the transmitter circuit because i want to use the logic one with a micro-controller
    if anyone could help
    thank you
  2. Bernard

    AAC Fanatic!

    Aug 7, 2008
    If you are activating a LED at the receiver , then there must be at least a 2V signal available, maybe running into waveform problems with meter.