Glueing diodes

Discuss the use of laser therapy for fighting hair loss. If you're using a purchased device, or a laserbrush or helmet that you've made yourself, discuss it here.

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thSman
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Glueing diodes

Post by thSman » Wed Aug 19, 2009 11:50 am

Is it neccesary to glue the diodes into the helmet,Ive just pushed in around 280mat the moment and they seem to be holding OK.
Just once i diodes been glued,if it fails its sure gonna make a mess of the foamie.
I got 400 from Aixiz and Ive had 2 failures before i even fitte dthem.
Do i send these back for replacements and is it worth the hassle for just 2.

Thanks.

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hapyman
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Re: Glueing diodes

Post by hapyman » Wed Aug 19, 2009 7:07 pm

thSman wrote:Is it neccesary to glue the diodes into the helmet,Ive just pushed in around 280mat the moment and they seem to be holding OK. Just once i diodes been glued,if it fails its sure gonna make a mess of the foamie.
A small dab of glue at the top of the diode may just be enough and may not ruin the foamies. But maybe better safe than sorry. What I found was that the pressure from the surrounding diodes seems to be enough to keep them all snug and in place.
I got 400 from Aixiz and Ive had 2 failures before i even fitte dthem.
Do i send these back for replacements and is it worth the hassle for just 2.
I would hold on to them because it is sad but I am sure they will be more. Hopefully not too many more though. I have the older model circuits and I have about 6 burned out ones I want to send back.

thSman
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Re: Glueing diodes

Post by thSman » Wed Aug 19, 2009 10:23 pm

Thanks for that.
Got the new power suppply up and running.The last one was 400 W and gave out 22 amps @3.3 V.This one is 500 W and only gives out 15 amps at 3.3V.Can you explain that.

xyion1
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Re: Glueing diodes

Post by xyion1 » Thu Aug 20, 2009 12:55 am

thSman wrote:Thanks for that.
Got the new power suppply up and running.The last one was 400 W and gave out 22 amps @3.3 V.This one is 500 W and only gives out 15 amps at 3.3V.Can you explain that.
Those numbers don't make sense....

Power (W) = Current (A) x Voltage (V)
Current = Power/Voltage
400W/3.3V = 121 amps
500W/3.3V = 151 amps

your numbers calculate out to be a 73W and 46W supply.

400 & 500W supplies are generally rather large and pretty expensive; are you sure about the wattage?

nodak8
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Re: Glueing diodes

Post by nodak8 » Thu Aug 20, 2009 2:39 am

Are you using a computer power supply? If not then disregard everything I write below. My assumption is that you are using a computer power supply though.

Computer power supplies deal out voltage in three different varieties, 12V, 5V and 3.3V. Essentially they are three power supplies in one, and each "power supply" has different current capacities. I believe the 400W or 500W you mention is actually the cumulative power of the three "power supplies".

Some numbers as an example:
Let's say the 12V rail can supply 10A. The power of that is 120W.
Let's say the 5V rail can supply 20A. The power of that is 100W.
Let's say the 3.3V rail can supply 30A. The power of that is 99W.

The total power of the power supply should then be 120W + 100W + 99W = 319W.

Different power supply manufacturers choose different current capacities for the rails depending on the design. Maybe your 500W power supply actually does only supply 15A at 3.3V while the 400W power supply can supply 22A at 3.3V? Those numbers are in line with other computer power supplies I've seen.

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hapyman
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Re: Glueing diodes

Post by hapyman » Thu Aug 20, 2009 7:22 am

NOdak is correct. The amount of amps is split between the different "rails" (12V, 5V, 3.3V etc). With the newer model power supplies there is less emphasis on the 3.3V rail because most of the high end computer components demand higher voltages than most of the older style computer components. My older model PS is 250W and has 20 Amps on the 3.3V rail because 3.3V was used more frequently back then.

Glad to see you got it working though.

medstudent 21
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Re: Glueing diodes

Post by medstudent 21 » Thu Aug 20, 2009 11:38 am

This worked out perfect for me:

Use Elmers glue!!! If the diode is dead you simply "pluck" the diode out of the foam and the foam is till intact. The diodes stay very well put and all is good!

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hapyman
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Re: Glueing diodes

Post by hapyman » Thu Aug 20, 2009 6:55 pm

Nice idea medstudent21... NON PERMANENT GLUE!!! Not to take anything away from you but I am surprised I have not seen that brought up before. But that is a great idea.

thSman
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Re: Glueing diodes

Post by thSman » Sat Aug 22, 2009 10:26 pm

Elmers glue,is that just generic to the US then?

thSman
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Re: Glueing diodes

Post by thSman » Sat Aug 22, 2009 10:28 pm

Whoa,they do so many types,whats the exact type that makes the diodes de mountable?

medstudent 21
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Re: Glueing diodes

Post by medstudent 21 » Sun Aug 23, 2009 1:48 am

Any school glue will work that is safe for children. These are usually water soluble. As i write this i am completely drunk after a hell week of courses, and here i am on hairloss forums!

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