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Message: Emoticon Listing HTML Help	[quote]Looking at the transistor with the round side up and the legs away from you, the pins from left to right are: emitter, base, collector. When trying to find out what leads are what on electronics, search the web for the part name and 'pinout' or 'data sheet'. Many manufacturers make some of the same chips, like the 2N2222, but if they have the same number, then they should all have the same 'pinout'. A manufacturer's website about the <a href=http://www.fairchildsemi.com/pf/PN/PN2222A.html target=_blank>2N2222</a>. Usually there will be a data sheet and it's usually an Adobe PDF. That's where the 'pinout' will be About the capacitors: the 'p', 'n', and 'u' are the same as a 'k' in km for kilometer. Except k=1000, p=.000000000001, n=.000000001, and u=.000001 So a 100nF is the same as a .1uF, and this can be confusing to some people at times. Yes you need inductors. But you'd want to buy them though, because you're going to need to adjust them to get them to tune in properly. When you tune them, you need to use a plastic screw driver (You should be able to find these near where you get your inductors). This is because a metal one will change the tuning. Last of all, don't let any of this discourage you. If this sounds too complicated, RadioShack and other electronics stores (the kind that sell resistors and capacitors) sell radio kits that have all the right parts and instructions on how to build. I've built a few of those myself for classes I've taken. Have fun and let us know how everything turns out![/quote]
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HempHacker

This message was updated on 10/29/2003 9:37:16 AM by HempHacker

Newby transistor radio building questions
replied on: 10/29/2003 9:33:12 AM

Looking at the transistor with the round side up and the legs away from you, the pins from left to right are: emitter, base, collector. When trying to find out what leads are what on electronics, search the web for the part name and 'pinout' or 'data sheet'. Many manufacturers make some of the same chips, like the 2N2222, but if they have the same number, then they should all have the same 'pinout'. A manufacturer's website about the 2N2222. Usually there will be a data sheet and it's usually an Adobe PDF. That's where the 'pinout' will be

About the capacitors: the 'p', 'n', and 'u' are the same as a 'k' in km for kilometer. Except k=1000, p=.000000000001, n=.000000001, and u=.000001 So a 100nF is the same as a .1uF, and this can be confusing to some people at times.

Yes you need inductors. But you'd want to buy them though, because you're going to need to adjust them to get them to tune in properly. When you tune them, you need to use a plastic screw driver (You should be able to find these near where you get your inductors). This is because a metal one will change the tuning.

Last of all, don't let any of this discourage you. If this sounds too complicated, RadioShack and other electronics stores (the kind that sell resistors and capacitors) sell radio kits that have all the right parts and instructions on how to build. I've built a few of those myself for classes I've taken.
Have fun and let us know how everything turns out!

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