Check out http://ccrane.com/ and there you will see the first two items on
the page have lights with the white LED. I bought the radio with the 3
white LED array and all C.Crane did it to take three white LEDs and a
regular bulb with no glass and solder the LEDs into an array around the bulb
thread so it could be screwed into any standard flashlight socket. It works
great. In fact, I even had it hooked up to a pickup coil in one of my PM
motors and it light up all three LEDs just fine. I wouldn't pay $12 per LED
when C.Crane is selling a whole flashlight with 3 white LEDs for $35.
Hopefully there is a source to get them from much cheaper than that.
Regards,
Ed
>Hi Folks!
>
>Got a call from long time friend Alex Petersen, we talked
>about a lot of things and he mentioned a white light LED.
>I thought he was joking but he found a source for them.
>If you are interested here is the contact information Alex
>told me he had located;
>
>Company is NICHIA
>Contact is Mike Burb
>Phone number is 717-285-2323 extension 105
>Part Number NSPW500VS
>Cost $12.00 each
>Company Location Lancaster, PA
>
>The white light LED draws from 3 to 3.64 vdc @ 20 ma.
>
>It is claimed that by removing the bulb from a 2 cell
>flashlight and inserting one of these white light LEDs
>that it will light to full white light intensity and
>remain for 24 hours per day for a period ranging from
>7 - 12 days, CONTINOUS.
>
>Now, there are several patents for 'switched' flashlights
>which turn the bulb off and on at about 24 flashes per
>second. The claim is that the batteries last slightly
>longer, the relative intensity remains the same and
>the eye cannot easily see the switching off and on
>because it is below the flicker rate and the bulb
>filament remains somewhat glowing between flashes,
>so it doesn't go completely dark.
>
>The problem with using this switching circuitry
>with a normal filament bulb is that the circuitry
>uses the very slight energy that is believed to be gained.
>
>Possibly with this white light LED, this switching
>circuitry, using very low power cmos or 555 timer
>type circuits, might extend the operation of the LEDs
>for an even greater period.