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4hv.org :: Forums :: General Science and Electronics
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PWM to Analog

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EEYORE
Tue Jul 20 2010, 06:33PM
EEYORE Registered Member #99 Joined: Thu Feb 09 2006, 06:10PM
Location: florida, usa
Posts: 637
 		Hello,
I just dont trust all that switching with my laser diodes. (I will be driving my high power laser diodes as well as LEDs) smile Scares me! An op-amp + power mosfet combo is super simple. It shouldnt dissipate too much power if the power supply is matched well to the LED string. A couple of watts at most.

Not sure if the controller has analog outputs yet. I havent looked at it too much since I am simply planning for it later. That will be stage 2. smile Im guessing the one that reefers have chosen doesnt, as they constantly talk about ways to dim their SMPS led drivers via the PWM output of the Arduino stuff...

Matt
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