- Oct 24, 2007
42 hours 19 minutes...op:
I thought you might have been thinking in minutes, yea...I meant minutes not hours. My fault. Here is the graph including the 30 hour test data with a projected line to 90%. The projected line crosses the 90% mark at about 10,000 minutes.
To me it seems like it's one and the same company... I mean, seeing how the logo under the letters is the same? :thinking:That is funny...
I've always liked Energizer much better than Duracow. :crackup:
Over 42h ON-time, yes... Cycling time is twice as much, experiment time even longer, due to the interruptions i made for cooling off and re-plotting (it'll be one week tomorrow).Hey Igor, that is over 42 hrs. of 'on time' correct? (not half of 42)
Hehe, i was thinking of how to make sure no one would misunderstand it...I read this post in the email, and I thought it said that it popped at 42 hours and 19 minutes. That scared me, then now I see the smiley, lol.
Indeed! In fact i think we should start deciding where to test the second 8x at soon...It's going to be interesting with the next one huh?
And the 12X too!
Hi, sorry, but isn't that chart logarithmic ?I meant minutes not hours. My fault. Here is the graph including the 30 hour test data with a projected line to 90%. The projected line crosses the 90% mark at about 10,000 minutes.
I wasn't assuming failure at 90% (10% loss). Just a figure or merit for comparison. I didn't know what the manufacturer's lifetime failure criteria was (20% loss, 30% loss, etc.).CHP;
Your projection is for 166 hours if the diode fails @ 10% power loss.
According to the manufacturers test methods, the diode should actually last even longer.
The diode is now requiring 6% more current for the same power.
I think it will easily surpass the 100 hour lifetime that Igor was hoping for.
Not bad at all, since we are overdriving it by 36% of maximum pulse power current (300/220).
Only the testing will tell for sure.
if it lasts 100 hours i vote for pushing it until it pops to see how far can they be pushed for short periods. Even if it's a freak diode it's degraded now, so we could get reasonable data...
Or, we could also make a lottery and donate it to the donators... :d