Quote:
Originally Posted by cmags
This definitely doesn't have to do with the 511ohm vs 510ohm resistor. Where do you see that its 511ohms? Did you measure that? Because the gold stripe on the resistor indicates 5% tolerance (+/- 25ohms), so you most likely have a 510ohm resistor that's actually quite w/in spec. 510ohm should be green-brown-brown (51 * 10^1).
The difference between a 2n3904 and 2n3906, however, is a big one. The 3904 is an NPN transistor, and the 3906 is PNP. These run in reverse polarity to eachother, so I would change that out for the correct one.
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Thanks for the info. I just didnt want to go buy a 2n3906 because I have to buy them in packs of 10 but I will change it out tomorrow. I couldnt find a 510 ohm resistor so I wired a 470 and a 41 in series.