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- Dec 10, 2012
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I have my goggles, I have a few diodes already in Aixiz modules, but I would rather build lab style or "semi portables". This will be partially a learning project, and while I wouldn't say cost is no issue, I would have no problem spending $9 for a fancy IC or other single-purchase components. The idea is to have a simple but adequate driver to start out with, but slowly make it more sophisticated - i.e a PTC protection thermistor, a TEC controller on the same power plug, even a ghetto actuated shutter.
I am starting with a "100mW" DPSS 532nm module that has what looks like a driver already attached, so I suppose I'm providing it a constant current just for practice. After it I have a 445nm m140 that I want to have a power knob as part of the initial package.
My first question is: I know why using just a resistor is bad for battery builds. How would just a resistor (or several) and a low-pass filter work out on a managed power supply?
Second, I see a lot of buck-boost ICs at various suppliers, is there any page where some of these larger packages have been thrown on 'scopes and judged for laser quality - instead of going through each datasheet and eyeballing comparisons?
I am starting with a "100mW" DPSS 532nm module that has what looks like a driver already attached, so I suppose I'm providing it a constant current just for practice. After it I have a 445nm m140 that I want to have a power knob as part of the initial package.
My first question is: I know why using just a resistor is bad for battery builds. How would just a resistor (or several) and a low-pass filter work out on a managed power supply?
Second, I see a lot of buck-boost ICs at various suppliers, is there any page where some of these larger packages have been thrown on 'scopes and judged for laser quality - instead of going through each datasheet and eyeballing comparisons?