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My blu-ray won't light a match!? PHR at 120mA!

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hydrogenman15

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I think rcktr driver turns excess voltage into heat but I'm not sure if the current changes.
If i have to guess I'd say it doesn't but once again I'm not sure.

-hydro15
 





YGG

YGG

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So how much mA's are your batteries alone putting out at this point?
 
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Archienj7

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I'd say it's putting out under 50 mW's then, but I'm new to the hobby. I'd get a senior members advice/help on this if you and WUA can't get it fixed together through PM. Shipping can be hell on components anyways and you are overseas if I'm correct. Sorry if I'm wrong.
 
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Archienj7 said:
I'd say it's putting out under 50 mW's then, but I'm new to the hobby. I'd get a senior members advice/help on this if you and WUA can't get it fixed together through PM. Shipping can be hell on components anyways and you are overseas if I'm correct. Sorry if I'm wrong.
Click to expand...

Ye but shipping here is one week. Anyway I don't think the components are wrong. adrian told me he tested it before sending and was burning normally, so, the only thing left are the batteries.

If they are fully charged, the only thing I think that might happen is that the set I got was of poor quality or that these batteries are bad at all, something I doubt since they are the same laserbee have and I used them for the dilda and didn't had problems.

I'm gonna test with an AC adapter and I tell you.

Yours,
Albert
 
lasersbee

lasersbee

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Hallucynogenyc said:
Ye but shipping here is one week. Anyway I don't think the components are wrong. adrian told me he tested it before sending and was burning normally, so, the only thing left are the batteries.

If they are fully charged, the only thing I think that might happen is that the set I got was of poor quality or that these batteries are bad at all, something I doubt since they are the same laserbee have and I used them for the dilda and didn't had problems.

I'm gonna test with an AC adapter and I tell you.

Yours,
Albert
Click to expand...
Hey Albert... that is twice that you mentioned that... What is the voltage
written on the batteries that you are using....
When you check the current by the batteries there is only 1-3mA difference
compared to the output of the Driver.
Take a voltage reading of your batteries with the Laser OFF then take
another voltage reading of your batteries with the Laser ON...
If there is a great difference then your batteries are sagging under power.
If not... then your driver is not adjusted to supply 120mA to the LD.


Jerry
 
Last edited:
D

Deleted member 8382

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I bought the ones you told me, that pack that comes a chrger and 4 blue batteries. it's written "3.6V 600mah".

Ok I'm gonna test that now, thanks.
 
D

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Okay I don't know how to measure the voltage when it's turned on since they are inside and I don't have an open holder for them. Anyway, i used an AC power suply set to 10.5V and still nothing. And this suply have a amperimter on it that goes from 0 to 6A so I don't think there's any problem with it.

I've not tried to measure the current from the suply to the module, but I'm pretty sure I'm gonna get the same readings because I couldn't see any difference from using the batteries to using the supply.

Is there any chance the pot has been moved alone? I just can't understand what happens.

"When you check the current by the batteries there is only 1-3mA difference
compared to the output of the Driver."

Then I'm not wrong if I say the diode is getting at max 80mA? 80mA=60mW, then it's normal that I can't light a match!

Yours,
Albert
 
lasersbee

lasersbee

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When the 3.6 Volt batteries are fully charged... they will be at 4.2 Volts each..

BTW... does the seller have a Laser Power Meter...


Jerry
 
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yes, they are at 4.12V when fully charged, after testing lots of times the voltage is now 4.07 each, so they are not going down more fast than normal.

I'm sure batteries are not the problem. The seller doesn't have a meter, but he told me the current was set to 120mA and that he was able to burn with it before shipping it to me.

This is starting to be a matter of ghosts touching my laser xDDDD

SO the crucial question here is: Can I regulate the current with the laser turned on and a 1ohm resistor between the barrel and the batteries? I want to avoid desoldering the diode to put a dummy load...
 
TheMonk

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The rckstr driver is a constant current driver, the input current is the same as the output current. You can use a VoltMeter to measure the input current at the host tailcap that will give you the output current as well.
Unscrew the tailcap, set the voltmeter to measure current place the leads between the battery negative and the host body.
 
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TheMonk said:
The rckstr driver is a constant current driver, the input current is the same as the output current. You can use a VoltMeter to measure the input current at the host tailcap that will give you the output current as well.
Unscrew the tailcap, set the voltmeter to measure current place the leads between the battery negative and the host body.
Click to expand...
Good. Then the question is, is adjusting the current posible while the laser is on posible? Also, will the 1ohm resistor placed betweem the barrel and the batteries have any effect on the raedings?
 
lasersbee

lasersbee

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Hallucynogenyc said:
yes, they are at 4.12V when fully charged, after testing lots of times the voltage is now 4.07 each, so they are not going down more fast than normal.

I'm sure batteries are not the problem. The seller doesn't have a meter, but he told me the current was set to 120mA and that he was able to burn with it before shipping it to me.

This is starting to be a matter of ghosts touching my laser xDDDD

SO the crucial question here is: Can I regulate the current with the laser turned on and a 1ohm resistor between the barrel and the batteries? I want to avoid desoldering the diode to put a dummy load...
Click to expand...
You could try that... but be carefull not to overshoot the current to the
LD or you will need to get another one...:cryyy:

Jerry
 
iskor12

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Please correct me if I am wrong...which I just might be. Isn't it true that if you are taking a higher voltage and then you bring it down......doesn't the side with the lower voltage have a higher current output than the side with the higher voltage? I know that is what happens with transformers, but I am not sure if this happens with this regulator.

If this post doesn't make any since, please let me know and I will try to clarify what I am saying.
 
blrock

blrock

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Strange..my 150mw blu-ray I bought from ebay lights a match at 10m away! My 1 Watt green laser cant even do that. It even burns wood! Probably because the beam is so tight on the blu-ray.
BTW the driver I got with it didnt work well at all. I hooked a 12volt 1000mA (unregulated) power adaptor to a voltage regulator board I bought at an electronic store. I turned the voltage down to 5.5volts and Volla! Very strong beam. I didnt even limit the current in anyway. The little regulator board only allows you to set voltage. I have no idea what the current is. I'm just letting the diode draw what it wants. Dangerous I know. I may be a little luckly.
 
D

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iskor12 said:
Please correct me if I am wrong...which I just might be. Isn't it true that if you are taking a higher voltage and then you bring it down......doesn't the side with the lower voltage have a higher current output than the side with the higher voltage? I know that is what happens with transformers, but I am not sure if this happens with this regulator.

If this post doesn't make any since, please let me know and I will try to clarify what I am saying.
Click to expand...
That's exactly what I thought but I think a driver doesn't work like a transformer, I think there's a voltage regulator inside that works like a variable resisotr that adjust itself to keep it constant. I'm totally saying this while ignoring how does this really works, but I think we can't apply this to the drivers since there is not any kind of transformer inside :p
 
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