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Old 07-11-2012, 05:31 AM #1
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Default Should I avoid the BenBoost?

Hey everyone,
Ive been planning a 445 build (M140), and I decided to go with a BenBoost. Now, I'm seeing some members say that they kill the diode.
Should I look for another boost driver instead of the BenBoost?
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Old 07-11-2012, 08:33 AM #2
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Default Re: Should I avoid the BenBoost?

As far as I know the benboost has only killed sensitive diodes like the single mode 405's. 445's are a lot tougher and should be fine, just use a max current of 1.8 A.
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Old 07-11-2012, 09:23 AM #3
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Default Re: Should I avoid the BenBoost?

Ben boost drivers are fine. Like grainde said the 405nm are more sensitive diodes. Just don't set the driver at the very edge of maximum allowed current for the 405nm. The current ripple could jump over the max and killing the diode.
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Old 07-12-2012, 06:00 AM #4
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Default Re: Should I avoid the BenBoost?

Quote:
Originally Posted by grainde View Post
As far as I know the benboost has only killed sensitive diodes like the single mode 405's. 445's are a lot tougher and should be fine, just use a max current of 1.8 A.
yeah, ben boost can only handle 1.25A max, he would need 2 x benboosts in parallel to get that 1.8A
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Old 07-12-2012, 08:09 AM #5
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Default Re: Should I avoid the BenBoost?

I'm using two benboosts (from when moh was selling them if that matters) paralleled to drive an M140 445 @~1.8A which is giving me 1.75W with a G2 lens.
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Old 07-12-2012, 08:23 AM #6
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Default Re: Should I avoid the BenBoost?

Quote:
Originally Posted by foulmist View Post
yeah, ben boost can only handle 1.25A max, he would need 2 x benboosts in parallel to get that 1.8A
Sorry, should have been clearer. I meant don't use more than 1.8 A with an M140 diode...
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Old 07-12-2012, 09:36 AM #7
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Default Re: Should I avoid the BenBoost?

Quote:
Originally Posted by grainde View Post
Sorry, should have been clearer. I meant don't use more than 1.8 A with an M140 diode...
I know I just pointed that one ben boost wouldn't handle it Didn't want to let the OP think a single ben boost can do 1.8A
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Old 07-12-2012, 02:37 PM #8
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Default Re: Should I avoid the BenBoost?

Thanks everyone!
Now I just need to wait for cilegray to confirm my address and I'll have a nice 445
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Old 07-12-2012, 03:40 PM #9
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Default Re: Should I avoid the BenBoost?

Does cilegray still sell ben boosts? Killed a couple today..
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Old 07-12-2012, 03:42 PM #10
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Default Re: Should I avoid the BenBoost?

I certainly hope so, otherwise I just gave him 14$
He hasn't responded to me for about a week though, so I figure he's on vacation?
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Old 07-12-2012, 03:53 PM #11
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Default Re: Should I avoid the BenBoost?

Quote:
Originally Posted by offroadfreak8582 View Post
Does cilegray still sell ben boosts? Killed a couple today..
Replace the LM3410 ic and it works again.
I know a guy on tweaker.net who can order the LM3410 without minimum cost at farnell.
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Old 07-12-2012, 05:24 PM #12
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Default Re: Should I avoid the BenBoost?

Kinda answers what i had in mind.. But since then their sales have been put on hold until further testing. Hope to see some better ones with 2A capacity as the bars have been set higher like never before, with the current advancements in 445 hobby industry
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