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Old 04-22-2016, 10:38 PM #81
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Default Re: New diode!!! Nubm47-a1

In the video it's about 2 inches away. I'll move it back some.


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Old 04-22-2016, 11:10 PM #82
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Default Re: New diode!!! Nubm47-a1

Cool results!!!

Feeling good to live in Canada atm lol. No strict drone laws other than the sensible "dont hit people" "dont fly near airports" etc. For now that is...
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Old 04-22-2016, 11:50 PM #83
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Default Re: New diode!!! Nubm47-a1

@ Pman
What's really bad are these ebay supposed 5mw blues that are really 75mw 405nm, that is so dangerous.

But on the other hand if people start with a burner that needs glasses then they have to learn safety, with a 5mw 532 they may learn to behave badly.

It's sadly out of our hands except to warn people.
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Old 04-23-2016, 01:09 AM #84
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Default Re: New diode!!! Nubm47-a1

This is another run. I'm measuring voltage across the diode. I'm don't think that's accurate. I think it's higher current then that.

https://youtu.be/ISyuIDxMr2M
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Old 04-23-2016, 01:13 AM #85
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Default

Quote:
Originally Posted by ABarnett View Post
This is another run. I'm measuring voltage across the diode. I'm don't think that's accurate. I think it's higher current then that.

https://youtu.be/ISyuIDxMr2M
What's the driver set at and what ya asking for em?
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Old 04-23-2016, 01:16 AM #86
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Default Re: New diode!!! Nubm47-a1

Ok it's in the ballpark, what about divergence, can you get a video of the spot/line at 10 or 15 feet? Even 5 feet.
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Old 04-23-2016, 12:02 PM #87
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Default Re: New diode!!! Nubm47-a1

Quote:
Originally Posted by ABarnett View Post
This is another run. I'm measuring voltage across the diode. I'm don't think that's accurate. I think it's higher current then that.

https://youtu.be/ISyuIDxMr2M
Voltage across the diode isn't the same as current. To measure current you'd have to put a current meter in series with the diode, but I've heard that isn't good for the diode. The other way would be placing a high power/low resistance shunt in series and metering the voltage across it.
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Old 04-23-2016, 12:14 PM #88
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Default Re: New diode!!! Nubm47-a1

You want to measure current with an inductive meter.

Divergence is simple, focus it at a brick 10 feet away and measure the line.
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Old 04-23-2016, 12:23 PM #89
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Default Re: New diode!!! Nubm47-a1

I know you have to run it through the meter to get an accurate current reading. The guy who makes these drivers told me to test it like that. I know it's not good having the diode unsoldered to the driver, because if it's a shaky connection the capacitor will load up then potentially send a surge to the diode and damage it.

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Old 04-23-2016, 02:17 PM #90
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Default Re: New diode!!! Nubm47-a1

I think I'm a bit confused. Was that 4.5V or so what the diode is seeing? I thought they were higher than that. Looking back I see you said you were going to test it like Jordan does. Would like to plot a curve and see what is going on.
I don't think there are many members who own a clamp on meter that can read DC amps. I happen to own a very good one (Fluke 381) because I justified needing it for when I was working but I was still the only one in the company that owned one that could read DC A as you could get by without it. Wouldn't recommend anyone buy an expensive new one. If you really want one buy it used on Ebay. You also might be able to buy an add on piece for your meter.
Thanks for testing for the rest of us. We tend to get impatient but the reality is you are the one taking all the risk and we don't have any skin in the game.
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Old 04-23-2016, 02:57 PM #91
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Default Re: New diode!!! Nubm47-a1

You have to watch out, they will say AC/DC but some are AC/DC voltage but AC current only, make sure you get DC current, they are more expensive.

This one is in the 50 dollar range and has some extras.

http://www.ebay.com/itm/New-Compact-...UAAOSwgQ9V7QAt

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Old 04-23-2016, 04:33 PM #92
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Default Re: New diode!!! Nubm47-a1

So 4.3A /4.5A is the best did you try 5A =

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Old 04-23-2016, 05:53 PM #93
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Default Re: New diode!!! Nubm47-a1

This thing (Volt-ammeter from dx, SKU 252392) would give more info on the videos.

252392 - Free Shipping - DX

I think to put them in next multiple diodes builds where I will try to drive LDs in series with only one driver.

Do you know if this kind of Volt-ammeters is safe for LDs?
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Old 04-23-2016, 07:06 PM #94
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Default Re: New diode!!! Nubm47-a1

I don't think that clamp on is DC amps. As far as I can tell that is the same as this one:
Tenma Compact Digital Clamp Meter | 72-7218 (727218) | Tenma
When I say DCamps with a clamp meter I mean reading it with the clamp part.
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Old 04-23-2016, 07:21 PM #95
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Default Re: New diode!!! Nubm47-a1

I have a harbor freight clamp on, it definatly does not measure dc current
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Old 04-23-2016, 07:26 PM #96
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Default Re: New diode!!! Nubm47-a1

That's a cheaper model, I have one right here on my desk this very minute and it reads DC amps VIA the inductive pickup.

It's a model 72-7226 TRUE RMS







Attached Thumbnails
New diode!!! Nubm47-a1-sany0606.jpg   New diode!!! Nubm47-a1-sany0608.jpg   New diode!!! Nubm47-a1-sany0609.jpg   New diode!!! Nubm47-a1-sany0604.jpg   New diode!!! Nubm47-a1-sany0615.jpg  

New diode!!! Nubm47-a1-sany0610.jpg   New diode!!! Nubm47-a1-sany0611.jpg  
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Last edited by RedCowboy; 04-23-2016 at 07:38 PM.
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