[SOLVED]0.34A but i bougth it for 1,2A?

• Mar 28, 2014

• #1

TimTom

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hey guys,

today my driver for my laserdiode arrived after extracting it from the plasticbag i noticed, that some parts from the spray are broken up.

there a picture, what spray i mean. it is marked with a red box.
http://puu.sh/7MDLH.jpg

is it bad if i use it nevertheles? of course, i will measure the ampere & volt what comes out.

thank you o;

EDIT: picture of my driver with broken spray (in the right of the driver are the broken parts):

 

Last edited: Mar 29, 2014

• Mar 28, 2014

• #2

ryansoh3

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Re: Oh wow.. a dead driver arrived?

I'm actually familiar with that driver.

Seems like the inductor chipped off, but shouldn't affect performance. Just make sure the coil doesn't unravel.

 

• Mar 28, 2014

• #3

Zeebit

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Re: [solved] Oh wow.. a dead driver arrived?

Should not be a problem. I have one of those drivers that also has a chipped inductor (spray? is it a translation fail?) and it runs fine.

 

Last edited: Mar 28, 2014

• Mar 28, 2014

• #4

TimTom

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Re: [solved] Oh wow.. a dead driver arrived?

@Zeebit: Yep it is.. googletranslator ftf.. ._.

EDIT: So.. the driver is rated at 1,2A with 3,7-18V and I tested it with 4,4 Volts (3x1,5V Batteries) and I just got 0.34A? Do I need more Power (V)?

 

Last edited: Mar 28, 2014

• Mar 28, 2014

• #5

Garoq

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Re: [solved] Oh wow.. a dead driver arrived?

TimTom said:

@Zeebit: Yep it is.. googletranslator ftf.. ._.

EDIT: So.. the driver is rated at 1,2A with 3,7-18V and I tested it with 4,4 Volts (3x1,5V Batteries) and I just got 0.34A? Do I need more Power (V)?

Click to expand...

How did you test it? Were you using a dummy load? If so, how many diodes were selected?

 

• Mar 28, 2014

• #6

TimTom

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Re: 0.34A but i bougth it for 1,2A?

I gave it power and hold my 2 Leads to my Multimeter and it says 0.34A :ß

 

• Mar 28, 2014

• #7

Tmack

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Re: 0.34A but i bougth it for 1,2A?

You need a test load. Something to simulate the diode. Just hooking it to a multimeter will tell you nothing.
Member jufrain sells adjustable test loads that I highly recommend. Very useful, very well built.

 

• Mar 28, 2014

• #8

TimTom

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Re: 0.34A but i bougth it for 1,2A?

Ah okay.. but it is too late =D I already toke it to my Diode with ~6,6V and what happens?
It works! :3 I'll open a buildthread in a week or so - see you guys <3

 

• Mar 28, 2014

• #9

Garoq

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Re: 0.34A but i bougth it for 1,2A?

You need a setup like this:

Well, you don't need the o'scope. But I'm actually testing the same driver here.

 

• Mar 28, 2014

• #10

Cyparagon

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Re: 0.34A but i bougth it for 1,2A?

The inductor needs that ferrite, and without it, the inductance is lowered - potentially a lot. This will cause excessive ripple in your current. Your multimeter will not show this (unless you have a true-RMS meter in ACV mode I suppose), but it can over-current your load as a result. I recommend either replacing the inductor, or at least gluing it back together. Regular superglue will work.