- Joined Dec 8, 2012
I found this diagram on a burning laser tutorial. I understand that the capacitor is there to smoothen the voltage and that the diode is there to prevent voltage spikes. What I don't understand is how the diode prevents voltage spikes. Wouldn't the diode create a short circuit? The tutorial said that if some one removes the laser diode and then puts it back, the diode will prevent the capacite'rs current from burning out the laser diode. How is this possible? Why will the capaciter output current through the diode and not the laser diode?
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