Identifying Infared LEDs

U

Uriah

Guest
I have a Infrared LED transmitter and receiver that is part of a
redemption game and I need to get some new ones. The distributor wants
$100.00 for a pair of them. Of course the distributor or the
manufacture won't tell me anything about them and there are no docs or
specs or anything to help me in trying to find them from Mouser or
Digi-key. Is there an easy way to figure out what they are so that I
can pick them up for probably under $5.00 from anyone but the
distributor? I am hoping for some cheap test gear that tells you the
wave length and what ever else I need to know.
Thanks
Russ
 
On Dec 9, 3:29 am, Uriah <uriah...@hotmail.com> wrote:
I have a Infrared LED transmitter and receiver that is part of a
redemption game and I need to get some new ones. The distributor wants
Click to expand...
There is no easy way to measure the wavelength without special
equipment. You can measure the carrier frequency for the protocol
using an oscilloscope, which will at least let you choose a receiver/
transmitter pair that will work together.
 
"Uriah" <uriahsky@hotmail.com> wrote in message
news:acb93dd8-3258-4ed5-b35d-e3b3937a3e36@f18g2000prf.googlegroups.com...
I have a Infrared LED transmitter and receiver that is part of a
redemption game and I need to get some new ones. The distributor wants
$100.00 for a pair of them. Of course the distributor or the
manufacture won't tell me anything about them and there are no docs or
specs or anything to help me in trying to find them from Mouser or
Digi-key. Is there an easy way to figure out what they are so that I
can pick them up for probably under $5.00 from anyone but the
distributor? I am hoping for some cheap test gear that tells you the
wave length and what ever else I need to know.
Thanks
Russ
I had an ice machine that used an Infrared LED transmitter and receiver.
Click to expand...
When
the leads corrodide off of one of them, I found it cost $105 plus shipping
to
get the new assembly. I went to Radio Shack and bought their infrared
transmitter
and receiver pair, and installed them. It worked fine.
What is a redemtion game and how is the Infrared LED transmitter and
receiver used?
Mike
 
On Dec 9, 4:20 am, "amdx" <a...@knology.net> wrote:
"Uriah" <uriah...@hotmail.com> wrote in message

news:acb93dd8-3258-4ed5-b35d-e3b3937a3e36@f18g2000prf.googlegroups.com...>I have a Infrared LED transmitter and receiver that is part of a
redemption game and I need to get some new ones. The distributor wants
$100.00 for a pair of them.   Of course the distributor or the
manufacture won't tell me anything about them and there are no docs or
specs or anything to help me in trying to find them from Mouser or
Digi-key. Is there an easy way to figure out what they are so that I
can pick them up for probably under $5.00 from anyone but the
distributor?  I am hoping for some cheap test gear that tells you the
wave length and what ever else I need to know.
Thanks
Russ

  I had an ice machine that used an Infrared LED transmitter and receiver.
When
the leads corrodide off of one of them, I found it cost $105 plus shipping
to
get the new assembly. I went to Radio Shack and bought their infrared
transmitter
and receiver pair, and installed them. It worked fine.
 What is a redemtion game and how is the Infrared LED transmitter and
receiver used?
                                               Mike
Click to expand...
It is one of those games you played as a kid and got tickets from it.
Like Skee Ball, etc. Like at a Chuckie Cheese. All these do is
determine position but I tried some other ones and I couldn't get it
to work. If I remember right I measured 5 volts at the receiver and
it dropped below 1 volt when the transmitter made contact. Perhaps I
just need a pair that operates like that, but what do I look for?
What spec is that? The game is a long way off so I have a hard time
experimenting. . I run across these all of the time and was hoping
for some test instrument that would help, but I guess they don't have
one for what I am looking for. I did buy all of the radio shack IR
LED's along with many others but it is hard to match them up.
Thanks
Russ
 
Uriah wrote:

It is one of those games you played as a kid and got tickets from it.
Like Skee Ball, etc. Like at a Chuckie Cheese. All these do is
determine position but I tried some other ones and I couldn't get it
to work. If I remember right I measured 5 volts at the receiver and
it dropped below 1 volt when the transmitter made contact. Perhaps I
just need a pair that operates like that, but what do I look for?
What spec is that? The game is a long way off so I have a hard time
experimenting. . I run across these all of the time and was hoping
for some test instrument that would help, but I guess they don't have
one for what I am looking for. I did buy all of the radio shack IR
LED's along with many others but it is hard to match them up.
Thanks
Russ
Click to expand...
Radio Shack 276-142 is a matched emitter/detector pair.
http://www.radioshack.com/product/index.jsp?productId=2049723

Ed
 
"Uriah" <uriahsky@hotmail.com> wrote in message
news:5b61e92b-811f-42c9-a01b-0d630967607c@v15g2000prn.googlegroups.com...
On Dec 9, 4:20 am, "amdx" <a...@knology.net> wrote:
"Uriah" <uriah...@hotmail.com> wrote in message

news:acb93dd8-3258-4ed5-b35d-e3b3937a3e36@f18g2000prf.googlegroups.com...>I
have a Infrared LED transmitter and receiver that is part of a
redemption game and I need to get some new ones. The distributor wants
$100.00 for a pair of them. Of course the distributor or the
manufacture won't tell me anything about them and there are no docs or
specs or anything to help me in trying to find them from Mouser or
Digi-key. Is there an easy way to figure out what they are so that I
can pick them up for probably under $5.00 from anyone but the
distributor? I am hoping for some cheap test gear that tells you the
wave length and what ever else I need to know.
Thanks
Russ

I had an ice machine that used an Infrared LED transmitter and receiver.
When
the leads corrodide off of one of them, I found it cost $105 plus shipping
to
get the new assembly. I went to Radio Shack and bought their infrared
transmitter
and receiver pair, and installed them. It worked fine.
What is a redemtion game and how is the Infrared LED transmitter and
receiver used?
Mike
Click to expand...
It is one of those games you played as a kid and got tickets from it.
Like Skee Ball, etc. Like at a Chuckie Cheese. All these do is
determine position but I tried some other ones and I couldn't get it
to work. If I remember right I measured 5 volts at the receiver and
it dropped below 1 volt when the transmitter made contact. Perhaps I
just need a pair that operates like that, but what do I look for?
What spec is that? The game is a long way off so I have a hard time
experimenting. . I run across these all of the time and was hoping
for some test instrument that would help, but I guess they don't have
one for what I am looking for. I did buy all of the radio shack IR
LED's along with many others but it is hard to match them up.
Thanks
Russ

I think what you said is, with the signal from the LED transmitter blocked
from the receiver,
the output voltage is 5 volts. When you allow the transmitter signal (light)
to hit the receiver
the output goes down to 1 volt.
That seems normal to me, you might be able to get an output voltage a
little lower than 1 volt
with better aim but, 1 volt would work in most circuits.
As someone else pointed out Radio Shack sells the IR devices in matched
pairs.
Mike
 
On Dec 9, 1:29 am, Uriah <uriah...@hotmail.com> wrote:
I have a Infrared LED transmitter and receiver that is part of a
redemption game and I need to get some new ones. The distributor wants
$100.00 for a pair of them.   Of course the distributor or the
manufacture won't tell me anything about them and there are no docs or
specs or anything to help me in trying to find them from Mouser or
Digi-key. Is there an easy way to figure out what they are so that I
can pick them up for probably under $5.00 from anyone but the
distributor?  I am hoping for some cheap test gear that tells you the
wave length and what ever else I need to know.
Thanks
Russ
Click to expand...
If they are still working you can view them through any home video
camera setup and use that to gauge the brightness/suitability of a
possible replacement set? My camcorder almost lets me count the
pulses coming out of the TV remote.
 
On 14 Dec 2009 04:10 AM, Lee <melee5@my-deja.com> wrote:

[ snip ]

If they are still working you can view them through any home video
camera setup and use that to gauge the brightness/suitability of a
possible replacement set? My camcorder almost lets me count the
pulses coming out of the TV remote.
Click to expand...
What type of camera do you have? Most video cameras are going to operate in the 30-60 Hz range, far away from allowing you to see a 36Khz signal.

Though I may not understand the application you're talking about being able to count.

MikeD
 
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