Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #11   Report Post  
Old August 27th 03, 12:53 AM
Lizard Blizzard
 
Posts: n/a
Default

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.

  #12   Report Post  
Old August 27th 03, 03:51 AM
Fred Nachbaur
 
Posts: n/a
Default



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

  #13   Report Post  
Old August 27th 03, 03:51 AM
Fred Nachbaur
 
Posts: n/a
Default



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

  #14   Report Post  
Old August 27th 03, 12:35 PM
Frank Dinger
 
Posts: n/a
Default

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



  #15   Report Post  
Old August 27th 03, 12:35 PM
Frank Dinger
 
Posts: n/a
Default

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





  #16   Report Post  
Old August 27th 03, 03:13 PM
Sven Franklyn Weil
 
Posts: n/a
Default

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.
  #17   Report Post  
Old August 27th 03, 03:13 PM
Sven Franklyn Weil
 
Posts: n/a
Default

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.
  #18   Report Post  
Old August 27th 03, 03:28 PM
Fred Nachbaur
 
Posts: n/a
Default



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 |
+--------------------------------------------+

  #19   Report Post  
Old August 27th 03, 03:28 PM
Fred Nachbaur
 
Posts: n/a
Default



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 |
+--------------------------------------------+

  #20   Report Post  
Old August 27th 03, 05:10 PM
--- Bill ---
 
Posts: n/a
Default

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


Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
I MAKE LAMPS OUT OF THEM 829B WITH PLATE LINE'S Fuse19 Boatanchors 2 February 10th 04 05:24 PM
1819 24 volt lamps matt Boatanchors 0 February 3rd 04 06:55 PM
Hint on replacement for Yaesu panel lamps Carl R. Stevenson Equipment 4 January 16th 04 05:35 PM
Hint on replacement for Yaesu panel lamps Carl R. Stevenson Equipment 0 January 3rd 04 03:23 AM


All times are GMT +1. The time now is 07:19 PM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017