I've done the basics of hooking up an LED, and calculating the proper resistor value, but when it comes time to add in a transistor, it just seems backwards to me.
So I found this page that describes my basic understanding: http://www.kpsec.freeuk.com/components/led.htm
Then I found this page to try and understand resistors: http://www.reuk.co.uk/What-is-a-Transistor.htm
As I understand how resistors work (maybe I'm off here), that basic laymen's term says that an input into the base goes up to the controller, and is then output to the emitter at a higher current.
Logic tells me (baring in mind my lack of experience/knowledge) that the emitter acts as the input for current, like the positive input from a source, but is a higher current than the original source input to base. So I would logically want to hook the emitter end to a resistor, then to the led - but that's not what I'm seeing.
I see the positive going to positive on the led in the second link, and the emitter going to ground. This seems backwards (compared to the first link), but I find it to be consistent online, so what am I missing here?
Thanks in advanced for the help.
So I found this page that describes my basic understanding: http://www.kpsec.freeuk.com/components/led.htm
Then I found this page to try and understand resistors: http://www.reuk.co.uk/What-is-a-Transistor.htm
As I understand how resistors work (maybe I'm off here), that basic laymen's term says that an input into the base goes up to the controller, and is then output to the emitter at a higher current.
Logic tells me (baring in mind my lack of experience/knowledge) that the emitter acts as the input for current, like the positive input from a source, but is a higher current than the original source input to base. So I would logically want to hook the emitter end to a resistor, then to the led - but that's not what I'm seeing.
I see the positive going to positive on the led in the second link, and the emitter going to ground. This seems backwards (compared to the first link), but I find it to be consistent online, so what am I missing here?
Thanks in advanced for the help.