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Hi.
Do some one have a overview there shows the Pot functions on this smaller OEM version driver. The laser head is a CNI H-Head 1 watt type.
Can see this driver the alot of test points on the PCB. If anyone have infomation around this points it would be cool
Thanks
Poul.
Attachment 43540
Hi Poul!
I had the same issue with a similar driver (MGL-H driver for up to 10W 808nm LD)
I've sent an email with a photo of my driver to sales@cnilaser.com and after 3 days they answered me.
My problem was also to identitify the pots.All of the TECs and the diode current pots were identitify on the photo.
Have a try.
Best Regards :
Ferenc
Hello Epyn. Could you post the picture with the description of each pot? It would be great since that would help allot of other members that have the same problem aswell.
Thanks in advance!!!
It might be worth looking to see if there is any thing on the sinkscreen under the pots?
Johan!
This is the photo i've sent CNI to identify the important pots for re-tune the laser head's temperature because i've replaced the original 5W 808 nm diode to 10W.
This is an MGL-H-532 analogue modulation driver board.
i've bought the laser from Andy-Con.
Attachment 43551
Dave!
There is no anything on the sink side...
Thanks Ferenc, i,m sure other people are helped with this :)
Silkscreen on the board under the trim pots, you would need to lift the pots off to see ;)Quote:
Originally Posted by epyn
Oh my bad...
I didn't soldered off the pots :D
At the next maintenance i'll get round to
Hi epyn.
Know i asked on the "small" driver. But we have also the large one as you posted a pic of yesterday.
I have a pic of all the pot on the large driver. If any is interested.
But don't know if the small driver can handle the same current as the big older one ? Any experiance here.
Normally the 1 watt CNI H makes around 1.2.-1.4 watt @ 4.4-4.6 amps. Beleave it's a 5w Ir source.
You replace to with a 10W version insted. What current, power (2 or 2,5w?) and beam spec do you get them ?
Can the Nd:YVO4 crystal and KTP Crystal handle that ?
I just second that what Johan posted :Quote:
we have also the large one as you posted a pic of yesterday.
I have a pic of all the pot on the large driver.If any is interested
Im interested :)Quote:
It would be great
My driver does up to 6.4A (i think because it's for an 1W 532 nm head)
She can does more amperes though but didn't figured out how I solve it yet.
Might it be a resistor to replace.Have to back up to draw the circuit diagram.
Once i did it i will post the schematics who interested.
-Im experienced in electronics also-
This laser head from andy_con as i said.
He sold me as 'not in good condition'.
In fact there wasn't any problem with the laser though only needed some intracavity align.
Here is the result(note that on the right picture there wasnt installed the collimator optics.)
Attachment 43607
I think my MGL-H head can handles the 10W pump diode since it has large Xtals and If there is a proper PSU.
Only the diode needs 10 amperes.
Oh, i have 23A PSU anyway(from a YLODed PS3)
:) Hi all,
Currently the 5W diodes have a 200x1µm emitter area, and 400x1µm on the 10W diodes. I don't think that this 10W working fine without optics modifications.
@ Poul, sorry i haven't any informations on this driver. For the other ( big ) there are two different with minor modifications....i'm working on...:o, but i don't like this drivers.
Christophe. :cool:
I bought this diode and works fine only with the laser head's integrated focusing lens.
The divergence is <1mRad (3mm @ aperture and my next measurement was at 10 meters : ~12 mm.) and very clear round spot.
The only thing is to do,figure out how should i push the diode to the max , to 10 amperes.
Im also working on this issue.
One of the minor things is the TTL drivers contain an LS00 smd IC while the analogue drivers not contain this NAND gate.
:) Re,
Have a look at this version (Analog modulation too), No RP10, U8 (TL431) at the same place.
Attachment 43611
@Epyn: What is your power output with the 10W diode and 4,6A on the driver ?
:cool:
Dunno i haven't LPM.Quote:
What is your power output with the 10W diode and 4,6A on the driver ?
The diode driven at 6.4A currently this is the maximal output current of the driver.
Here is a projection at full brightness at daylight over 40 meters + beamshot at daylight as well
I'm not worry about what power of 532 nm :rolleyes:
note that,there WASN'T any smoke only the dust in the air.
Projection on my neighbour's house is a double lined text.
I think she has pretty cool divergence.
Might i get more 'power' if i tune properly the cavity and the temperatures.
But i have not LPM and spectrometer(for tune the infrared wavelenghts.)
Hi everybody
Normally i attach a pico driver. It can do 10A with nice fast and lin modulation. And most importend it have dual full h-bridge so both tecs can heat and cool. Its a great driver.
For the smal driver i have a client there came with it because of low power. But will remove the pots and see the silk print. The bigger cni could be nice to see the schematic how "bad" its conctructed. Hihi.
But the pico is the way it you want stable power at all temps, also in the winther with minus degrees its making full power because of the heat and cool tec.
Know cni have a h bridge driver now but not sure if its a dual tec one? Any want info on this one
Poul
Maybe this is also interesting info. This is a new driver that came with the OEM-F. Now i,m not sure if this is the new heat and cool driver that poul is talking about. Anyone here that can confirm if this is the new heat and cool driver?
HI Johan.
By looking at the PCB it's looks like it have a Full bridge mounted with 4 fets for 1 TEC. If i remember correct the F-head is a 1 tec type laser from CNI.
That is also the reason i have used the H-heads because of the dual tec (more solution i beleave)
Have attached a pic there shows what i beleave is the sections there. But please comment i can be wrone, i only looking from a pics approaches only. :-)
Any one Know if the N-head types is a single or a dual Tec laser ? Can't get a answers from Cni, if it's have single or dual tec inside.
Attachment 43616
Hi all,
I have 6 heads CNI 532nm and 473nm from 300mW to 1,5W, all are build with two TEC. One on the diode mount, and other on the copper cristal cavity. The old B&W Tech OEM 473nm/10mW made by CNI have the same architecture.
CNI is not Viasho...:confused:
Cheers. :cool:
Hi Christophe,
I guess you have MGL-type heads. The OEM version of these heads are different design, with only 1 TEC to cool both crystals + diode.
Hi Mickael,
I just saw it on the site ... CNI new versions at low cost...
Before, OEM versions for integration only affects drivers delivered without housing or PSU, and now without one TEC...:confused:
Well, with three months warranty, transportation from China is covered. And with TEM: Near 00 you can not complain later...
Thanks for this additional information.:)
:cool: