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Old 04-16-2012, 06:06 PM #417
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Default Re: FREE DIY open source BOOST driver!!! Tested & working!!

Quote:
Originally Posted by rhd View Post
*Facepalm*

The spec is the same. The +125C spec is the same for all of the LM3410s we've been using. The only difference that "Q" gets you, is supposedly improved defect detection AT the spec (of +125C) at the factory.

Lol, this isn't some magical version of the IC that can handle more heat....
Reliability qualification is compliant with the requirements and temperature grades defined in the AEC-Q100 standard?

what does that mean actually? somebody can explain it to me simplier please


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Old 04-16-2012, 07:01 PM #418
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Default Re: FREE DIY open source BOOST driver!!! Tested & working!!

Quote:
Originally Posted by rhd View Post
*Facepalm*

The spec is the same. The +125C spec is the same for all of the LM3410s we've been using. The only difference that "Q" gets you, is supposedly improved defect detection AT the spec (of +125C) at the factory.

Lol, this isn't some magical version of the IC that can handle more heat....
I'm building maybe 10 of these. That's maybe $3. I can't believe they are the exact same IC just at a different price. I'm not thinking they are magic. I'm just hoping that I'm buying cheap insurance with a chip that is supposed to have a lower defect percentage and perhaps better heat tolerance.

Heck, I can get the Q's cheaper from Newark than the regular ones from mouser right now.
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Old 04-16-2012, 07:07 PM #419
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Default Re: FREE DIY open source BOOST driver!!! Tested & working!!

Quote:
Originally Posted by tsteele93 View Post
I'm building maybe 10 of these. That's maybe $3. I can't believe they are the exact same IC just at a different price. I'm not thinking they are magic. I'm just hoping that I'm buying cheap insurance with a chip that is supposed to have a lower defect percentage and perhaps better heat tolerance.

Heck, I can get the Q's cheaper from Newark than the regular ones from mouser right now.
My understanding is that it's the same chip, but more rigorously tested at manufacture. So, instead of the final user having to test and discard 2 devices per XX,XXX that had a faulty LM3410s, they only have a failure rate of 1 per XX,XXX units. etc
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Old 04-16-2012, 07:11 PM #420
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Default Re: FREE DIY open source BOOST driver!!! Tested & working!!

Hey, instead of facepalming me (they need a smiley for that!) help me out with this post...

Presale: The Ben Boost



P.S. Since the written word is so much harder to interpret, I am totally light-hearted joking around about the facepalm stuff. No hurt feelings and not arguing or anything.
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Old 04-16-2012, 07:50 PM #421
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Default Re: FREE DIY open source BOOST driver!!! Tested & working!!

Lol

Current of a Ben Boost is given by 0.19 / Resistance.

Wattage needs to be at least 0.19 x Current (A)
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Old 04-16-2012, 07:58 PM #422
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Default Re: FREE DIY open source BOOST driver!!! Tested & working!!

Quote:
Originally Posted by rhd View Post
Lol

Current of a Ben Boost is given by 0.19 / Resistance.

Wattage needs to be at least 0.19 x Current (A)
NEVER MIND, I see the choice for the 805 case.

I got the current, I just don't know which one of those resistors to order. I'm afraid that I'll get some giant thing that won't fit. In other words, I think that I'm ok on the theory, it is the practical part I'm not familiar with.

Or maybe I only have one choice is if I choose .19 x current?

I just want to get the right resistor package if that makes sense.
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Old 04-16-2012, 08:27 PM #423
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Default Re: FREE DIY open source BOOST driver!!! Tested & working!!

Quote:
Originally Posted by tsteele93 View Post
NEVER MIND, I see the choice for the 805 case.

I got the current, I just don't know which one of those resistors to order. I'm afraid that I'll get some giant thing that won't fit. In other words, I think that I'm ok on the theory, it is the practical part I'm not familiar with.

Or maybe I only have one choice is if I choose .19 x current?

I just want to get the right resistor package if that makes sense.

chances are that you'll be able to get like a 1/2 W resister and that should be fine.

Also, it's not 0.19 x current = resistance
It's current = 0.19 / resistance such simplifies to:
0.19 / current = resistance

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Old 04-16-2012, 08:49 PM #424
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Default Re: FREE DIY open source BOOST driver!!! Tested & working!!

Quote:
Originally Posted by rhd View Post
chances are that you'll be able to get like a 1/2 W resister and that should be fine.

Also, it's not 0.19 x current = resistance
It's current = 0.19 / resistance such simplifies to:
0.19 / current = resistance

Brain fart. Thanks, and I see the heavy lifting has already been done on the first post in this thread when it comes to the resistors.
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532nm O-like 50 mW pen from Cajun Lasers - small dot, tight beam!
532nm O-like Crown, rated @ 400mW, metered @ ~450mW with AW battery!
532nm O-like Crown rated @ 500mW, not yet tested
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638nm Fat Boy @ 825mW - custom build

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Old 04-19-2012, 08:41 AM #425
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Default Re: FREE DIY open source BOOST driver!!! Tested & working!!

Hey guys, any suggestions on where to get started with learning electronics. I get the basic stuff. (I think)
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Old 04-19-2012, 10:55 AM #426
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Default Re: FREE DIY open source BOOST driver!!! Tested & working!!

Quote:
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Hey guys, any suggestions on where to get started with learning electronics. I get the basic stuff. (I think)
I use Google for anything I don't already know and then
practical experimenting to see if I did learn "whatever"
correctly...


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Old 04-19-2012, 06:22 PM #427
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Default Re: FREE DIY open source BOOST driver!!! Tested & working!!

Thank Jerry, Ive been reading this Beginners' Guide to Electronics, Part 1 - Basic Components Explained and it seems like a pretty good read for the everyday n00b. And in his index he has some more in depth articles too.
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Old 04-19-2012, 10:41 PM #428
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Default Re: FREE DIY open source BOOST driver!!! Tested & working!!

Quote:
Originally Posted by Machinist Joe View Post
Thank Jerry, Ive been reading this Beginners' Guide to Electronics, Part 1 - Basic Components Explained and it seems like a pretty good read for the everyday n00b. And in his index he has some more in depth articles too.
Very nice find!
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532nm O-like Crown, rated @ 400mW, metered @ ~450mW with AW battery!
532nm O-like Crown rated @ 500mW, not yet tested
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Old 04-20-2012, 09:06 PM #429
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Default Re: FREE DIY open source BOOST driver!!! Tested & working!!

Vishay- 0603 (1608) 100K Ohms 5% SMD Resistors -400pcs | eBay

http://www.ebay.com/itm/TDK-0805-201...ht_3445wt_1110

For bulk buyers.
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Old 04-21-2012, 02:29 PM #430
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Default Re: FREE DIY open source BOOST driver!!! Tested & working!!

Quote:
Originally Posted by Le Quack View Post
The voltage of the 10uF caps is a bit low at 6V...
The original 16V versions would be better to use..


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Old 04-21-2012, 03:53 PM #431
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Default Re: FREE DIY open source BOOST driver!!! Tested & working!!

The general rule is 50% higher than the peak voltage.
This ensures long capacitor life, however depending on the application and presence/absence of clamping zeners you can get away with less.
A sensible margin in this case would be 20% > Vpeak

(who found this out the hard way after having 8 C*p*on capacitors blow their tops on his expensive 19" flat panel)
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Old 04-21-2012, 03:56 PM #432
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Default Re: FREE DIY open source BOOST driver!!! Tested & working!!

chip Value Capacitor 0805Y106M 10UF 16V 100PCS SMD | eBay

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