i've been searching around looking for a diy solution to convert the ~5v LED output from my usb-uirt (similar to an ocelot) into a ~12v signal to input into my xantech ir distribution contoller. i've seen many references to the IRLINC 8175 from smarthome, but i haven't been able to find any circuit diagrams or examples to build one.
i've read that adding a diode in series with the 5v output signal from the usb-uirt will protect the 12v signal from the xantech from backfeeding back into the usb-uirt output circuit. the 5v output might be enough to pipe through the xantech controller. actually i know that the 5v signal is strong enough, i've hooked them up and verified (just not with the diode)...
i would prefer to do this by what i think is the correct way by using an opto-coupler circuit. i just don't know if the conversion from the 5v to the 12v system is just a straight amplification issue, or if there are other changes to the amplitude, freq., or carrier of the signal....
from what i've seen this a fairly common issue when using both HA/HTPC with IR distribution systems. if anyone could post a quick diy circuit, i'm sure it would help a lot of people. thanks!
i've read that adding a diode in series with the 5v output signal from the usb-uirt will protect the 12v signal from the xantech from backfeeding back into the usb-uirt output circuit. the 5v output might be enough to pipe through the xantech controller. actually i know that the 5v signal is strong enough, i've hooked them up and verified (just not with the diode)...
i would prefer to do this by what i think is the correct way by using an opto-coupler circuit. i just don't know if the conversion from the 5v to the 12v system is just a straight amplification issue, or if there are other changes to the amplitude, freq., or carrier of the signal....
from what i've seen this a fairly common issue when using both HA/HTPC with IR distribution systems. if anyone could post a quick diy circuit, i'm sure it would help a lot of people. thanks!