Hah, so the unicorns DO exist!
"The MLP?s high-energy storage and box-shape make it perfect for voltage holdup or filtering in military SEM-E modules, telecom circuit packs and computer cards. The MLP delivers up to 20 joules of
Best regards, Piotr
It's funny you say "unicorns"; MLP also stands for My Little Pony.
Hmm, this is arguably more on topic, and arguably even more disturbing?
Well... enjoy, I guess. ;-)
Oh, so, anyway, "exist" may be a little strong... have you checked stock on any of those? :-)
Tim
-- Seven Transistor Labs, LLC Electrical Engineering Consultation and Design Website:
$85.
50years at 45deg is not that impressive. Derating is lifex10 per 20deg drop for solid polymer or roughly lifex4 per 20deg drop for wet electrolytic. So that 438khr implies 6800 hours at 105degC (if wet electrolytic) or 430 hours at 105degC if polymer. Plenty of parts around now boast 10,000 hrs at 105degC and polymers nearly as good at that temp (and of course vastly better at lower temps).
piglet
Alternative?
Best regards, Piotr
Good conventional electrolytics last a long time if they don't run hot. ESR self-heating is the big enemy.
Several small caps in parallel is thermally better than one big one. Air flow matters. Shop around for a combination with minimal ESR and maximum surface area.
Polymer aluminums are good, low ESR and no water to diffuse out, but it's hard to store much energy in them. They don't seem to come in big sizes.
This is great:
Maximum thermal insulation.
That's like $1.70/year, much cheaper than a service contract!
Tim
Sure, but it's the first time I see "50 years" specified explicitly. Currently the best "long life" part I have ever seen didn't specify that expressis verbis, but its longevity chart ended around 18 years.
But there are no high voltage polymers (400+V DC).
125V is the current record AFAIR.Best regards, Piotr
Not that bad.
Best regards, Piotr
LOL, marketing missed a trick, should have said 200 years life at 25deg!
piglet
Close:
"Life tests and measurements of weight loss at high temperatures showed expected operating lifetimes for the spinoff capacitor of 50 to 100 years. That is well beyond the 10 years expected of typical aluminum electrolytic capacitors."
:-)
Best regards, Piotr
Since the replacement only has about 1/3 of the capacitance of the original, I fail to see what is so "great" about it.
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You might hire Sloman for lessons in taking everything absolutely literally.
So much for CD's critical thinking ability :)
I wonder if he notices when the point whizzes past him?
Irony, humor, ambiguity, and confusion are fundamental to electronic design. The solution space is so enormous that lightly-directed stumbling is the only way to explore it.
Aye. Too many times I've found a good solution by going down what look at first like the wrong roads.
NT
Or the only way John knows how to explore it.
The fact that inventions tend to be independently invented at much the same time does suggest that the solution space does have a structure that some can perceive.
Group brainstorming often works well, but one sourpuss can poison the session. It's important that there be no initial distinction between serious ideas and goofy ideas and outright jokes.
About the only thing we can safely dismiss is outright violation of conservation of energy.
t first like the wrong roads.
I've not found group brainstorms successful myself. The others have always been far too conservative. You must have colleagues more like-minded.
I should have learnt from my first one, wherein I suggested an idea that so unded a bit off the wall but I'd already done it years before & it quadrupl ed sales. In hindsight it's not hard to see why, it's primarily basic atten tion getting, something that's often undervalued in business. Plus remindin g people of the problem they need to solve.
NT
Yes. One scores points for having ideas, not shooting down ideas. It can be a lot of fun. Sometimes we can get potential customers to play; the danger there is that we can look hare-brained and uncertain; some customers expect mature certainty, as in a prepared PowerPoint or something boring like that.
Customers know their process and we know signal processing. It takes some iteration to discover a great combination. It's wonderful when it works.
A lot of potential customers simply won't reveal what they actually intend to do. That makes innovation tough.
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