Does radio shack stock 9-volt ready to go leds.
I need to go,anybody hanging out.


p.s. I got a remote car opener apart without
tearing It up,3 volt battery.It got wet and run over
It. Got the water out,need to get new battery.
Maybe radio shack has tester. Very miniture
curcuit.More to come.Help with leds Info,how long
will 9 volt battery last appox,a few hours or-----

 

9 volt LEDs? You mean LEDs with built in resistors? Why don't you just solder a resistor to one of the LED's terminals? 330 ohms works well for most LEDs.

A 9V alkaline typically has 500mAh capacity, assuming 20mA LED current draw it will last a bit longer than a day. Actual results will vary, expect less than this.

 

When an electronic device gets wet, immediately yank out the battery, then disperse the water with 90% isopropyl (rubbing) alcohol. Let it all dry, add fresh batteries, and the item is usually saved.

As for a 9v LED, a yellow-orange LED with a 470 Ohm resistor in series would give it about 15mA. I'm not sure why a 9V is needed, since you stated there was a 3V battery in the unit.

 

Again I mixed two subject,I can understand
not making things clear. The wet Item was
a car remote. The leds I wanted to attached
to some thing for display. I was told that the remote
was fried so I didn't attemp right away to take It
apart. Under the soft rubber buttons you have a
thin plastic piece with bumps coated with a black
substance.When you press a button the black
substance makes contact with a grid of metal
to close curcuit. The grids look all the same,but
does different duties such locking and unlocking
doors. I going to test the battery,I don't have much
hope.Too much time has passed. I went by radio shack,
I was surprised they didn't have any gadgets will leds
that I could take apart to make a gadget of my own.
All they had was leds and sockets for bread boards.
I wanted to take leds from plastic and put them on
heavy cloth.

 

You can not take the LED out of the plastic housing shown in this picture. But you can get LED of SMD type that is very small, and has a very low profile. But they are not easy to work with.
http://www.mhled.com/en/

 

Thanks so much for the link,It helped me me find others.
You see people wearing battery operated gear that looks
like what you need,but they can't remember where they
got It or It was a gift. That the reason you get so many
questions about power limitations.Radio shack sells the parts,
but no current Information.

 

Thanks so much for the link,It helped me me find others.
You see people wearing battery operated gear that looks
like what you need,but they can't remember where they
got It or It was a gift. That the reason you get so many
questions about power limitations.Radio shack sells the parts,
but no current Information.

Most all new LEDs (clear lens) are very bright with 15-20mA, I usually run around 15mA, going as high as 25mA for brightness (sacrificing LED lifetime) when LED is run by PWM or otherwise used only in short on-times, such as a blinking alert indicator.

The clothing LEDs are the surface mount variety. They typically come on a tape ready for machine placement. 38 Cents Each for 600nm from DigiKey "Gold" being Amber, so in the range of 590-600 nm I'm guessing.

LED Colors and Wavelengths:

UVC 100-290 nm
UVB 290-320 nm
UVA 320-400 nm
Blue - 475 nm
Teal - 495 nm
Green - 510 nm
Yellow - 570 nm
Orange / Amber - 590 nm
Red - 650 nm
Near Infrared NIR 0.78 - 3 µm
Mid Infrared MIR 3 - 50 µm
Far Infrared FIR 50 - 1000 µm

 

Hello,

This is also a nice list on leds:
http://www.oksolar.com/led/led_color_chart.htm

There is also a lot of information on leds in the links of the following pages:
http://www.educypedia.be/electronics/composemiconductorsled.htm
http://www.educypedia.be/electronics/circuitsled.htm

Bertus

 

Thanks,Guys you have give me some good Information.
Going to radio shack was a big step for me,looking thru
there stock drawers show me they are behind the curve.