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Old 07-17-2010, 01:30 AM #1
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Default 445 done

EDIT: Drlava confirmed that the continuity (less than 1ohm resistance) between diode - and batt - is normal. Never hurts to be carefull.

Driver: Microboost @ 950mA
Diode: 445nm A140
Battery: 14500
Host: Silver Romisen

Result:

Aixiz Acrylic lens melted IMMEDIATELY. I noticed right away due to change in output so no damage done. Cleaned lens with q-tip/alcohol, output is clean.
Jayrob has shipped my 445 lens so I will wait for that.

PICS: (Beam shots when 445 lens arrives)


Surrounded the driver with tape after (not in pic) to prevent shorts with heatsink. Extra layer of tape inside heatsink.




This is temporary. Cut a bottlecap into a circle. Poked the wire through and soldered it with aluminum foil (like 8 layers folded).







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Last edited by Tabish; 07-17-2010 at 11:20 PM.
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Old 07-17-2010, 02:01 AM #2
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Default Re: Is the driver shorted ?

I am pretty sure that is normal. Try looking at the board and see if there is a trace between them. I am pretty sure they are not supposed to be dc/dc isolated power supples.
hook up a test load and see if its ok
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Old 07-17-2010, 02:06 AM #3
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Default Re: Is the driver shorted ?

im pretty sure thats normal....
ive never had one of these drivers
so is it brand new? if so hook your test load up and see if it works
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Old 07-17-2010, 02:07 AM #4
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Default Re: Is the driver shorted ?

Quote:
Originally Posted by CrazyMonkey View Post
I am pretty sure that is normal. Try looking at the board and see if there is a trace between them. I am pretty sure they are not supposed to be dc/dc isolated power supples.
hook up a test load and see if its ok
I don't want to kill the driver though..

The manual says and I'll quote:

"Unlike many other drivers, the battery negative (-) connection and the diode - (cathode) connections are NOT continuous. As such, diode + and - must be isolated from the laser casing."

In my case, If I connect the case pin to the battery - (as I planned to), the 2 WONT be isolated..

I think either I messed up (I don't see how though, no visible shorts)

Or the driver is defective and I should ask for a replacement...
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Old 07-17-2010, 03:09 AM #5
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Default Re: Is the driver shorted ?

Driver is fine with testload.

I'll try the diode next.
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Old 07-17-2010, 04:15 AM #6
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Default Re: Is the driver shorted ?

It seems the continuity test meant nothing.

Laser works fine.
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Old 07-17-2010, 04:33 AM #7
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Default Re: Is the driver shorted ?

great.....
aslways good to see something work ei
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Old 07-17-2010, 11:19 PM #8
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Default Re: 445 done

I got the reply from Drlava.

What I expected was a fault is normal.

According to him, there is less than 1 ohm of resistance between battery - and diode -.

Never hurts to be careful though.
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