Amplify Remote control IR signal

[Jared Russell]

Originally Posted by Don Rotolo

I am also interested in the circuits that teams have used to pick off the IR drive signal and send it to several IR LEDs.

I have an idea to use an Op Amp, but surely there's a simpler circuit out there?

Thanks,
Don

You don't need an op amp. You have two options.

One, if the remote's LED driver has a lot of muscle behind it, just hook up additional LEDs in parallel.

Two, if the LED driver isn't as strong (more likely), add in a transistor buffer integrated circuit (IC) to pull power directly from the remote's power supply.

There are a few ways to do this. Two inverters in series would work, as would a specialized buffer IC. Or even a tri-state buffer.