What are the specs for 'standard' 3.5mm mono pluged infrared (IR) emitters?

An example of what I'm talking about can be found on Amazon.  I am looking for which conductor is anode and which cathode as well as the forward voltage and current requirements.  My inability to see IR is really hurting my normal LED testing techniques.

sort by: active | newest | oldest
Your cellular phone camera wil see IR for you, as will a webcam.

I'm confused. How does the 2nd sentence connect to the 3rd?

EmperorMing (author)  lemonie6 years ago
With a normal LED I can start with a POT or some basic resistor value then increase or decrease until the desired light intensity is reached. With IR I have no way of knowing of it is bright or dim, only on or off using my cell phone camera.

Ah right I understand. You need to run these at the right current as brightness is subjective.
No guarantees, but this says 50mA:

He's not sure how to generate metrics for his gizmo. Hence the question and his candid frustation. Or that's what I'm guessing

seandogue6 years ago
There are special cards used by those who work with IR lasers that might assist you in your empirical adventures.

Punch "ir test card" into your favorite search engine.

I don't follow external links. There are no specific "standards". Many different devices with as many different device specifications.

IR remote control often works based on a carrier frequency of ~40KHz. The information encoded onto the carrier is stripped using a simple filter and decimated to determine its content, which is often a comm request, ("I have something to say!") followed by a command sequence containing both the command name and the value or trend (volume, increase), and a closing sequence to complete the "transaction" ("Done for now, thanks and bubye!"). The commands and values are generally device dependent.

The 40KHz carrier is important because it helps to filter out extraneous noise sources
EmperorMing (author)  seandogue6 years ago
Sorry about the external link. I am talking about IR emitters that are commonly used with home automation devices. I have attached an image to show what I am talking about.

frollard6 years ago
Agreed with all other replies: Generally using a 'mono plug' -- the tip is positive and ring is ground (negative).