IR LEDs

[Uriah]

Lets say I have a bunch of unlabeled Infrared LED transmitters. How
would I go about determining their properites? What do I need to know
about them to be able to match them up with receivers or build a
circuit around them?

Thanks
Russ

 

[Jasen Betts]

On 2009-04-28, Uriah <uriahsky@hotmail.com> wrote:

Lets say I have a bunch of unlabeled Infrared LED transmitters. How
would I go about determining their properites?

http://www.lirc.org
http://winlirc.sf.net

 

[Sjouke Burry]

Uriah wrote:

Lets say I have a bunch of unlabeled Infrared LED transmitters. How
would I go about determining their properites? What do I need to know
about them to be able to match them up with receivers or build a
circuit around them?

Thanks
Russ
Put 5 mA current trough each , and look at them with a BW video

camera.
Or take one known IR led with 10 mA and a variable(0-20)mA through
the unknown ones, produce equal intensity on the vidio screen,
and measure the variable current.
That gives you some measure of quality.