Paul posted references to urls that call the PMD16K100 an NPN. Here's another one:
Since the datasheet calls it an NPN, what is the proof that it is a PNP? That discrepancy really needs to be cleared up so that you can get the correct circuit.
Ed
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/PMD16K100.shtml
Sorry this is getting confusing... Looking at that data sheet, it does say that the PMD16K100 is a NPN, and the PNP is the 17K100... The transistor I have is clearly marked 16K100, so I suppose it is a NPN. I am quite new at this you see, and trying to wrap my head around how transistors work is a little intimidating, and I wrongly interpreted it as a PNP. I haven't seen that data sheet before. Now given it is an NPN I should go with ehsjr's suggestion of:
V+ ---+---------------+ | | P /c O|-------+ | | Gnd --+---[Motor]-----+
??
Thanks again! This is all a good learning experience.
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Another thing... Now to properly identify the leads on this thing, looking at the bottom the PMD16K100 with the to leads clearly off center to the left the top lead is the emitter and the bottom the base, and the body is the collector? Here is some ASCII to clear everything up:
__________ _/ \\_ _/ +E \\_ |_o o_| \\_ +B _/ \\__________/
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Good news guys! I hooked it all up with alligator clips today, and I used a 10K pot, a 10K resistor (I am probably going to use something closer to 4.7K as suggested for the finalbuild) , with the PDM16K100 and it worked great! I adjusted the voltage pretty evenly (I had it running for some time and the pot didn't seem to mind heat wise), and I am happy with the set-up. Thanks for all the help. But man, does that PDM16K100 ever produce heat! I am going to have to figure out how to fit a heat sink into the design before I do the final soldering.
Thanks again, you guys have been nothing but helpful!
-KV
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