Lamps?
 

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?

Bob

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?

Bob



Could they be 5 volts? If so, Mouser has some lamps with wire leads and
..094 diameter bulb. Search p/n 6833 and 7153.

-Bill M

Bob wrote:

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

You might try a model train shop. The ones catering to people who build
their own locomotives have small bulbs of various voltages, though 1.5
and 12 volt are the most common. Prices range from $1 to $3 per bulb.

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


Have you considered putting in a small clear LED with limiting resister
to the 6 volts? I've done this. Never have to replace a bulb again.



Ed

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.

Bob

James Robinson wrote:

Bob wrote:

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


You might try a model train shop. The ones catering to people who build
their own locomotives have small bulbs of various voltages, though 1.5
and 12 volt are the most common. Prices range from $1 to $3 per bulb.

One thing that you should already realize is that the new ones will
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.

Lizard Blizzard wrote:
James Robinson wrote:

Bob wrote:

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



You might try a model train shop. The ones catering to people who build
their own locomotives have small bulbs of various voltages, though 1.5
and 12 volt are the most common. Prices range from $1 to $3 per bulb.


One thing that you should already realize is that the new ones will
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 do that routinely at the shop where I work on TAD M-8's and MD-150's,
which use a similar scheme. However, you have to be sure to add
appropriate limiting resistors for each series string!

Cheers,
Fred
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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?
========
Suggest you have a look at QST -Sep 2003 , page 38 .
There you find an article : Solid-State Those Pilot Lamps , by AD5X

Since your bulbs have wire leads you can readily replace them by a LED (of
your desired coulour) and an appropriate resistor.
After that you can forget about replacement for ever .

Good Luck

Frank GM0CSZ / KN6WH

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?

--
Sven Weil
New York City, U.S.A.

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?

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
--
+--------------------------------------------+
| Music: http://www3.telus.net/dogstarmusic/ |
| Projects, Vacuum Tubes & other stuff: |
| http://www.dogstar.dantimax.dk |
+--------------------------------------------+