Fred Nachbaur wrote:

Any LED can be a 5 volt LED with an appropriate dropping resistor. ;-)

That being said, there *is* an LED rated for operation directly from a 5
volt line. Unfortunately, it's a flasher.

Cheers,
Fred

I noticed in the new Mouser catalog that there is a line of LED lamps
designed as direcet drop-ins for incandesent lamps. Horribly expensive
at this time.

-Bill

"Fred Nachbaur" wrote in message
news:xe33b.61864$K44.43700@edtnps84...
That being said, there *is* an LED rated for operation directly from a 5
volt line. Unfortunately, it's a flasher.

Either blue or while LEDs have pretty high voltage. Of course, they
require current limiting, which requires an overhead of voltage...

Tim

--
In the immortal words of Ned Flanders: "No foot longs!"
Website @ http://webpages.charter.net/dawill/tmoranwms

"Fred Nachbaur" wrote in message
news:xe33b.61864$K44.43700@edtnps84...
That being said, there *is* an LED rated for operation directly from a 5
volt line. Unfortunately, it's a flasher.

Either blue or while LEDs have pretty high voltage. Of course, they
require current limiting, which requires an overhead of voltage...

Tim

--
In the immortal words of Ned Flanders: "No foot longs!"
Website @ http://webpages.charter.net/dawill/tmoranwms

To all who suggested LEDs, thanks for the suggestions but there is a
problem. These are not pilot lamps. They illuminate an LCD and need to be
controllable by a regulator circuit for intensity. LEDs aren't really
suited to this application, although some modification of the circuitry and
optics might make it work.

All I want to do is get some more incandescent lamps for this radio, and
keep it close to original.

Bob

To all who suggested LEDs, thanks for the suggestions but there is a
problem. These are not pilot lamps. They illuminate an LCD and need to be
controllable by a regulator circuit for intensity. LEDs aren't really
suited to this application, although some modification of the circuitry and
optics might make it work.

All I want to do is get some more incandescent lamps for this radio, and
keep it close to original.

Bob

In article ,
(Sven Franklyn Weil) wrote:

In article , Lizard Blizzard wrote:

eventually burn out, too. So it would be wise to do the right thing and
replace them with LEDs, and they will last tens of thousands of hours.

I replaced a grain-of-wheat lightbulb for a clock-radio dial with one from
Radio Shack. The supply voltage is 5 volts so I bought a 12 volt bulb.

Imagine my surprise when these damned things are only rated for 15
hours!!!!

Are there any 5 volt LEDs around?

http://www.oxley.co.uk/lamps/bulb_replace.html

http://www.ledtronics.com/pages/News56.htm

http://www.ccrane.com/led_replacemen...ight_index.asp

and many more.

Al

--
There's never enough time to do it right the first time.......

In article ,
(Sven Franklyn Weil) wrote:

In article , Lizard Blizzard wrote:

eventually burn out, too. So it would be wise to do the right thing and
replace them with LEDs, and they will last tens of thousands of hours.

I replaced a grain-of-wheat lightbulb for a clock-radio dial with one from
Radio Shack. The supply voltage is 5 volts so I bought a 12 volt bulb.

Imagine my surprise when these damned things are only rated for 15
hours!!!!

Are there any 5 volt LEDs around?

http://www.oxley.co.uk/lamps/bulb_replace.html

http://www.ledtronics.com/pages/News56.htm

http://www.ccrane.com/led_replacemen...ight_index.asp

and many more.

Al

--
There's never enough time to do it right the first time.......

Lizard Blizzard wrote:
Bob wrote:

Looking for tiny incandescent lamps for my TM-451A Kenwood.

Apparently these are 6 V or so; there are four of them in series parallel
controlled by a regulator to vary intensity. They light up the LCD
and two
of them are burned out.

I have searched many of the usual sources and can't seem to locate
replacement lamps; as a last resort I could go to Pacific Parts but
they are
so expensive. These are just inexpensively made tiny bulbs with wire
leads.

Any suggestions?


The 272-1140 6V lamp from Radio Shark should work, if they still stock it.

They have them. I just bought a pack a few weeks ago.

- Mike KB3EIA -

Lizard Blizzard wrote:
Bob wrote:

Looking for tiny incandescent lamps for my TM-451A Kenwood.

Apparently these are 6 V or so; there are four of them in series parallel
controlled by a regulator to vary intensity. They light up the LCD
and two
of them are burned out.

I have searched many of the usual sources and can't seem to locate
replacement lamps; as a last resort I could go to Pacific Parts but
they are
so expensive. These are just inexpensively made tiny bulbs with wire
leads.

Any suggestions?


The 272-1140 6V lamp from Radio Shark should work, if they still stock it.

They have them. I just bought a pack a few weeks ago.

- Mike KB3EIA -

"Sven Franklyn Weil" wrote in message
...
In article , Lizard Blizzard wrote:

Are there any 5 volt LEDs around?

Indeed there are. Check for panel lights or LED panel illuminators in any
good electronics catalog- they come in lamp style mounts. The units have
multiple dice inside and the proper dropping resistor in place already.

Cheers!

Chip Shults
My robotics, space and CGI web page - http://home.cfl.rr.com/aichip