I need the IR repeater to pass IR (TV and so on) remote signal to remote devices in some box (pass the IR signal from outside the box). So, I bought a cheap IR repeater on single 2TY transistor, 4838 IR receiver and IR LED. It works just fine doing exactly what I want:
I tried to reproduce the schematic in my project, and I've got this (without power led):
And I assembled it on the breadboard and it does not work. When I use simple ordinary visible light D2 LED, I see it blinking when I use any remote on the sensor. But when I replace it with the IR LED, even from working device I bought or 50mA L-53F3C for example, it does not work with TV etc.
And I don't understand the capacitor C5 capacitance, it actually looks like this: And closer picture: So I wonder, is it capacitor at all? Tried with different capacitors and with no capacitor at all - no success. But I guess it does not matter. Please help, what's wrong and what could be the reason that it does not work?