xenon flash tubes - diyAudio
Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 13th September 2005, 10:12 AM   #1
Hayden is offline Hayden  Australia
diyAudio Member
 
Join Date: Aug 2004
Location: Mackay Australia
Default xenon flash tubes

I have one of those u shaped standard xenon flash tubes and in the specifications it says their good for 10,000 flashes!!! What thatís not much considering I wanted it for an rpm meter!!! I can use up 10,000 flashes in seconds!!
Is this figure correct? How do they die do they get dull or just stop working?

Thanks Hayden
  Reply With Quote
Old 13th September 2005, 11:42 AM   #2
dnsey is offline dnsey  United Kingdom
diyAudio Member
 
Join Date: Mar 2004
Location: Shropshire, England
Flashtubes come in two 'flavours': those intended for 'one shot' use (e.g. camera flashguns), and those for continuous operation (stroboscopes). Perhaps yours is the wrong sort for your application?
Life expectancy, as with other components, is based on rated output - if they are underrun, the life is likely to be much longer than spec. Similarly, overunning is possible, but severely shortens tube life.
Failure mode depends on the actual tube design and the application but usually involves failure to trigger, but the larger tubes can fail catastrophically, exploding and throwing glass everywhere, so you should use a guard over your tube to be on the safe side.
  Reply With Quote
Old 14th September 2005, 09:47 AM   #3
Hayden is offline Hayden  Australia
diyAudio Member
 
Join Date: Aug 2004
Location: Mackay Australia
Thanks for the info

here is the specs
Attached Images
File Type: jpg xenon.jpg (83.2 KB, 74 views)
  Reply With Quote
Old 14th September 2005, 10:26 AM   #4
dnsey is offline dnsey  United Kingdom
diyAudio Member
 
Join Date: Mar 2004
Location: Shropshire, England
The clue is in the application stated: Photographic use

Not really suitable for your application unfortunately. If you do decide to try it, be careful to guard it, as you may well exceed the rated dissipation, which could be messy
I'd suggest finding a more suitable tube - they're not very expensive. Alternatively, you could modify one of the cheap 'disco' strobes. Whichever way you do it, just watch out for charged capacitors and the secondary of the trigger transformer!
  Reply With Quote
Old 14th September 2005, 11:42 AM   #5
dnsey is offline dnsey  United Kingdom
diyAudio Member
 
Join Date: Mar 2004
Location: Shropshire, England
You might find this useful:
http://repairfaq.ece.drexel.edu/sam/strbfaq.htm
  Reply With Quote
Old 16th September 2005, 02:01 AM   #6
diyAudio Member
 
TwoSpoons's Avatar
 
Join Date: Oct 2004
Note that your tube is rated at 60J per flash. Thats a LOT of light. For your rpm meter 0.1 J per flash would be plenty. At that power level you'll get something on the order of 10 million flashes out of that tube (my best guess only!)
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
using flash camera (and maybe laptop screen or fluorescent) inverters to power tubes ionomolo Tubes / Valves 6 10th December 2008 01:30 PM
Xenon bulb faidzir Parts 0 17th October 2001 06:28 AM


New To Site? Need Help?

All times are GMT. The time now is 01:36 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2