Using the diode (or resistance) test function on a multimeter, you can measure across the BE and BC terminals to check for the presence of those "diodes".) Transistor Structure and Operation (This model is useful if you need to test a transistor. There's a whole lot of weird quantum physics level stuff controlling the interactions between the three terminals. Don't base your understanding of a transistor's operation on that model (and definitely don't try to replicate it on a breadboard, it won't work). The diode representation is a good place to start, but it's far from accurate. The diode connecting base to emitter is the important one here it matches the direction of the arrow on the schematic symbol, and shows you which way current is intended to flow through the transistor. By narrowing our focus down - getting a solid understanding of the NPN - it'll be easier to understand the PNP (or MOSFETS, even) by comparing how it differs from the NPN. We'll turn our focus even sharper by limiting our early discussion to the NPN. Digging even deeper into transistor types, there are actually two versions of the BJT: NPN and PNP. In this tutorial we'll focus on the BJT, because it's slightly easier to understand. There are two types of basic transistor out there: bi-polar junction (BJT) and metal-oxide field-effect (MOSFET).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |