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Oh, I forgot to ask, what would the voltage be?

Hello Everyone, I've successfully made a postive voltage regulator with the LM317, for a red 200mw diode. I am a tad bit confused about something, and I was hoping someone here would have the knowledge to clear it up. When I was testing for voltage, I noticed that as I increased the...

Aaah Thanks a lot! That is very helpful. I had seen negative regulators when i was looking into how to use the LM317. I didnt understand what that meant, but now its making sense. If the Diode is blown, then I guess i might have to try to actually pull it out, but im hoping it was just the...

Hello Everyone, I recently purchased a 200mw laser from chinavasion. It came DOA. I tried to communicate with them, but basically it was a whole lotta nothing done. Eventually I just bit the bullet and decided to try to fix this myself. I believe that the driver circuit is blown, and I want to...