IR transmitter

Thread Starter

shico90

Joined Jul 22, 2010
7
Hello
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
 

Bernard

Joined Aug 7, 2008
5,784
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.
 
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