8x vs. 12x

what's the difference between 8 and 12x diodes? is there any? I think someone said it's the same diode, so how is it? :thinking:

Someone correct me if I am wrong, 8x means harvested from an 8x burner, 12X means harvested from a 12x burner.

The faster the burner can write to the disc, the higher the mw output capability of the diode.

50% faster write speed should mean a comparable increase in output power of the diode.

photonaholic said:

Someone correct me if I am wrong, 8x means harvested from an 8x burner, 12X means harvested from a 12x burner.

The faster the burner can write to the disc, the higher the mw output capability of the diode.

50% faster write speed should mean a comparable increase in output power of the diode.

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I know, I was asking about the difference in DIODES
so, is 12x diode more powerfull than 8x?

photonaholic said:

The faster the burner can write to the disc, the higher the mw output capability of the diode.
.

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Not always true, I remember a drive claiming high write speeds, but the diode was exactly the same except they had a new vibration dampening system which allowed faster speeds.

Sorry I can't help you with the 12X Vs 8X I haven't been following them but I am also certain the 12X do reach slightly higher powers, and have a longer life time as they won't be as stretched reaching the powers an over driven 8X will.

3zuli said:

what's the difference between 8 and 12x diodes? is there any? I think someone said it's the same diode, so how is it? :thinking:

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At 1st there was the thought that 12x might just have freak high efficiently 8x diodes in them. IgorT has compared 12x & 8x diodes in his murder experiments as well as data from 12x users & he believes its fairly clear at this point that they are different. 12x can take more power & still live without deteriorating as an 8x would at those powers. The "safe" power for a 12x hasn't quite been nailed down yet.

There is no definitive answer for this question yet.

Visually, the two diodes are identical. Electrically, they fall into the same "range."

Some people are running 8X's in excess of the currents at which most of the 12X's are being run. They have not been running long enough to know how long they will last yet. Members have blown both 8X's and 12X's at the same currents.

The tests that IgorT is running has shown that the 8X can survive for at least 60 hours "on" at ~360mA. The first 12X he ran failed at ~390mA .

We have VERY FEW 12X builds running, certainly too few to make any assumptions.

ANY 12X build at this time should be considered an "experiment."

Peace,
dave

3zuli;

Here is a good chart from one of the manufacturers of laser diodes :

Since the chart was made, diode manufacturers have stated that they are now producing 320mw & 340mw diodes for 12X BR burners @ for 2-layer writing.

LarryDFW

P.S. I have a chart of BR power levels in my signature.

daguin said:

Members have blown both 8X's and 12X's at the same currents.

The tests that IgorT is running has shown that the 8X can survive for at least 60 hours "on" at ~360mA. The first 12X he ran failed at ~390mA .

We have VERY FEW 12X builds running, certainly too few to make any assumptions.

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Dave would be right. I am being a bit too hopeful & assuming too much at this point.

Don't the 12X diodes require slightly more voltage then the 8X? If so that's a measurable difference between the diodes. It kind of shows they are a different diode, but does not show any given increase in safe power levels. Just a thought

StridAst said:

Don't the 12X diodes require slightly more voltage then the 8X? If so that's a measurable difference between the diodes. It kind of shows they are a different diode, but does not show any given increase in safe power levels. Just a thought

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Read more carefully. Some are pulling higher voltage. Some are not. The differences between the didoes are staying withing the same "percentage" ranges as we have seen in violet diodes all along. The differences "look" more pronounced to us because the absolute numbers are larger. However, the percentages are not significantly different.

I am NOT saying that they are the same diodes. I am saying that we cannot answer this question yet. People are trying to decide whether to buy the 8X or pay more for the 12X based on these answers. We cannot give them these answers yet.

You pays your money -- You takes your chances

You push a 12x harder than a 8X -- You take the chance it will fail sooner

That's all

I push them all the time. However, I am not "hurt" nor do I blame someone else when they fail. I can buy and install a new one. I don't get angry with anyone because they gave me bad advice or sold me a "weak" diode. Experiments fail. If that is OK with you, run with it. If that would hurt you, accept the more conservative outlook.

**note** The use of the "second person" (you) is NOT making the statement aimed at any one poster. It is just gramatically very awkward to use the third person in statements like this. English sucks.

Peace,
dave

I see. So the voltage draw is quite inconclusive. =/ Hopefully the second 12x murder experiment will help with a definitive answer. Oh well. Quite curious as to the preliminary findings on the 10X. Who knows, perhaps the 12x improved speeds without improving the diode, but the 10x uses a stronger diode. Either way, best buy page on the 10x is nicely bookmarked now

daguin said:

Read more carefully. Some are pulling higher voltage. Some are not. The differences between the didoes are staying withing the same "percentage" ranges as we have seen in violet diodes all along. The differences "look" more pronounced to us because the absolute numbers are larger. However, the percentages are not significantly different.

I am NOT saying that they are the same diodes. I am saying that we cannot answer this question yet. People are trying to decide whether to buy the 8X or pay more for the 12X based on these answers. We cannot give them these answers yet.

You pays your money -- You takes your chances

You push a 12x harder than a 8X -- You take the chance it will fail sooner

That's all

I push them all the time. However, I am not "hurt" nor do I blame someone else when they fail. I can buy and install a new one. I don't get angry with anyone because they gave me bad advice or sold me a "weak" diode. Experiments fail. If that is OK with you, run with it. If that would hurt you, accept the more conservative outlook.

**note** The use of the "second person" (you) is NOT making the statement aimed at any one poster. It is just gramatically very awkward to use the third person in statements like this. English sucks.

Peace,
dave

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Dave, with that being said what do you do with all your drives that you have parted out?

Do you have a functional blue ray writer? or even use these? Just wondering.:beer:

jander6442 said:

Dave, with that being said what do you do with all your drives that you have parted out?

Do you have a functional blue ray writer? or even use these? Just wondering.:beer:

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Sleds, optics, motors, etc. are shared throughout the community (usually for the cost of shipping). Circuit boards are held in a box for the regular E-Waste collections we have here. The rest of the metal and plastic is trashed.

I do NOT have a functional blu-ray reader or writer. I watch movies on my 24 inch computer monitor. High definition is NOT needed I run additional hard drives for back up.

Peace,
dave

Diodes Don't draw voltage ... Period. They draw current as the voltage applied allows.

HMike

Hemlock_Mike said:

Diodes Don't draw voltage ... Period. They draw current as the voltage applied allows.

HMike

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Mike,

You're such a tool.

Hemlock_Mike said:

Diodes Don't draw voltage ... Period. They draw current as the voltage applied allows.

HMike

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I stand corrected. I guess the proper wording should have been "required"

My knowledge of electronics is weak at best. Though I am (slowly) improving