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- Jan 14, 2011
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Hey everyone.
I just got a nice little driver from DinoDirect (well, two of them) called the 3.0~9.0V 9W 1-Mode Regulated LED Driver Circuit Board 20mm. It's well built, but I want to figure some things out about it.
First things first - it has an inductor. Does that mean that we are talking boost driver? How do I test this?
Secondly - how do I check the amperage of this driver? I have heard that, because it's switching, my multimeter won't like to test it through a test load. I tried hooking it up to my testload, and it didn't work, even though, off of my testload, it was putting out voltage and amperage.
Thirdly - if I wanted to drop this driver down to 100mA, would I just stick a 10 Ohm resistor in series with the Out+?
Thanks everyone.
EDIT: Regarding the first question - probably not a booster, even though it has an inductor, because I realized the reason it wasn't reading anything on my DMM was because it was on blu-mode, and it wasn't putting out enough voltage from a single li-ion. Also, that's why it wasn't reading anything The voltage wasn't high enough.
So the third question is the only remaining one.
EDIT2: Great news! It works. It's steady at around 127mA, so I will stick the equivalent of an 11 Ohm resistor there instead.
I just got a nice little driver from DinoDirect (well, two of them) called the 3.0~9.0V 9W 1-Mode Regulated LED Driver Circuit Board 20mm. It's well built, but I want to figure some things out about it.
First things first - it has an inductor. Does that mean that we are talking boost driver? How do I test this?
Secondly - how do I check the amperage of this driver? I have heard that, because it's switching, my multimeter won't like to test it through a test load. I tried hooking it up to my testload, and it didn't work, even though, off of my testload, it was putting out voltage and amperage.
Thirdly - if I wanted to drop this driver down to 100mA, would I just stick a 10 Ohm resistor in series with the Out+?
Thanks everyone.
EDIT: Regarding the first question - probably not a booster, even though it has an inductor, because I realized the reason it wasn't reading anything on my DMM was because it was on blu-mode, and it wasn't putting out enough voltage from a single li-ion. Also, that's why it wasn't reading anything The voltage wasn't high enough.
So the third question is the only remaining one.
EDIT2: Great news! It works. It's steady at around 127mA, so I will stick the equivalent of an 11 Ohm resistor there instead.
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