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

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.

Tags:irLED

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steveastrouk

8 years ago

Your cellular phone camera wil see IR for you, as will a webcam.

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lemoniesteveastrouk

Answer 8 years ago


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

L

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EmperorMinglemonie

Answer 8 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.

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seandoguelemonie

Answer 8 years ago

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

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seandogue

8 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

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EmperorMingseandogue

Answer 8 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.

IR_Emitter.jpg
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frollard

8 years ago

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