On 3/14/07, Peter Feucht <p.feucht@palmed-medizintechnik.de> wrote:
>
> David,
>
> Thanks for your comments.
>
> 1. Yes, I thought of regulating the current by any type of PWM.
> 2. The "very slow ramp" you speak of: What is "very slow" here? Seconds,
> milliseconds?


As slow as you can tolerate really. If you're going to modulate the current,
that could get very tricky in compensating your feedback so that you don't
overshoot.

3. You speak of "toast very fast". How fast is "very fast" here? ms? =B5s?


I haven't seen anyone give any hard figures, but it's in the single digit
microseconds, and it's similar to how a light bulb reacts to overvoltage, as
the current rises the output power increases dramatically past a certain
point.

http://www.sony.net/Products/SC-HP/laserdiodewld/application/index2_01_03.h=
tml
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