Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
modern electronics is based on silicon, which have to be doped to assume useful electrical charateristics, eg to conduct charges.
Once you do that, the main principles of physics that you use are based on maxwell's law about electromagnetism.
By example, a common discrete electronic component is the diode. It is a junction composed of an N-doped connected with a P-doped silicon piece.
When you connect this two pieces, a depletion zone appear near the junction, that is a neutral zone no more doped, like a barrier where charges cannot pass.
Now, if you create an electric field, this barrier can grow up or reduce to zero depending on the direction of the field itself.
Using the maxwell law you discover that electric field and voltage are directly related, and the final result is that the diode conduct electricity only when you apply a sufficient positive voltage to P-doped silicon piece, also called anode, respect to N-doped piece, called cathode.
Other physics law used to study and resolve circuits are:
- ohm law
- kirchoff principles
used with the related norton and thevenin equivalents, and with linear models of components (eg. a conducting diode can be normally substituted by a 0,7 V voltage source) you can solve and project a greate range of circuits.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
