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Building first Bluray 803t laser without testdummy

U

ultimatum

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Helllllloo, I've just received my phr-803t diodes and a sony 16x red dvd burner diode, with aixiz modules and rckstr driver!

I have a problem with the test load I also ordered, I don't know how to use it...so I'm thinking about not to use it and connect the 803t straight to the driver, set the driver to the lowest current, connect the power circle to a amperemeter and improve till I have 100mA, does that work?

and what is the difference when I connect the red laser diode, what have I to change?

I'll power it up with a 9V battery.

Thank you for answering and giving me advises!
From a bloody beginner from switzerland who can't even speak correct English ;)
Peace
 





matrixcs

matrixcs

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give me a picture of your testload and i will instruct you how to use it.
 
Tabish

Tabish

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Wait!!! There is still a way to do it without the testload. Go here:

Micro-Drive V3 adjustable driver (assembled) - $13.00 : rkcstr.com, Micro-Drive and laser diode electronics

Scroll down and download the pdf. It shows 2 points on the rkcstr driver.

You check the resistance there.

to estimate current, use: 1.25 / resistance = current

for 100ma, set the pot till the resistance reads 12.5 ohms

I am sure this works with the PHR. I am not sure about 16x dvd burner diode.


Since you have the test load, I still reccomend you use it.

Simply connect it to the rkcstr as the load

The test load you have is for bluray ?
 
U

ultimatum

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Tabish said:
Wait!!! There is still a way to do it without the testload. Go here:

Micro-Drive V3 adjustable driver (assembled) - $13.00 : rkcstr.com, Micro-Drive and laser diode electronics

Scroll down and download the pdf. It shows 2 points on the rkcstr driver.

You check the resistance there.

to estimate current, use: 1.25 / resistance = current

for 100ma, set the pot till the resistance reads 12.5 ohms

I am sure this works with the PHR. I am not sure about 16x dvd burner diode.


Since you have the test load, I still reccomend you use it.

Simply connect it to the rkcstr as the load

The test load you have is for bluray ?
Click to expand...

Why 1.25/resistance? I mean 1.25 would be 1.25 Volt, why?
 
blue lasers

blue lasers

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your testload is unassembled right?
here is a tutorial how to assemble it, made by the owner RKCSTR.
 
Tabish

Tabish

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ultimatum said:
Why 1.25/resistance? I mean 1.25 would be 1.25 Volt, why?
Click to expand...

Because that is the voltage across the resistor. Don't quote me on this though.

All i know is, thats the formula the rkcstr's manual gave.

I used it, and it worked. I checked it using an amp meter, It was off by 0.1ma.
 
charliebruce

charliebruce

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The Rkcstr driver creates a voltage potential of 1.25 volts over this resistor, which is known as the "reference voltage". After this resistor is the diode, then ground. Using Ohm's law, by using the resistance and knowing the voltage across it you therefore know the current through it also, which is equal to the current through the diode.
 
U

ultimatum

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Now, I connected everything and set the driver to 100mA with an Amperemeter, and connected a bluray diode. It didn't work.

I connected the driver to a 'Voltmeter' and it showed about 8.5V. Am I doing something wrong?!! (Im using a 9V battery)
Did I damage the diodes?
 
blue lasers

blue lasers

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ultimatum said:
Now, I connected everything and set the driver to 100mA with an Amperemeter, and connected a bluray diode. It didn't work.

I connected the driver to a 'Voltmeter' and it showed about 8.5V. Am I doing something wrong?!! (Im using a 9V battery)
Did I damage the diodes?
Click to expand...

maybe you're not usnig the diode correct.do you know your diode's pinout?
 
U

ultimatum

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blue lasers said:
maybe you're not usnig the diode correct.do you know your diode's pinout?
Click to expand...

i think I know it, over the neutral pin in the middle is the negative left, and the positive right.
But I didn't remove the stuff around the pins, it's connected to them and very hard to remove... :/ :confused:
 
blue lasers

blue lasers

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ultimatum said:
i think I know it, over the neutral pin in the middle is the negative left, and the positive right.
But I didn't remove the stuff around the pins, it's connected to them and very hard to remove... :/ :confused:
Click to expand...

here is the pinout for a blu-ray diode
blu-raypinout-1.jpg
 
U

ultimatum

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Tabish said:
That seems fine.

Is the diode emitting anything ?

What does the resistance read across the 2 points on the driver?
Click to expand...

The diode isn't emitting anything.

Sorry, but whats the meaning of what does the resistance READ ? I'm actually not very good in English.
 
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