3.2 Week6 Note

Electronics Design

Component

  • wire: ribbon cable
  • switch: button
  • resistor(电阻): I=V/R
  • capacitor(电容): C = Q/V, I = C dV/dt
    • unpolarized 无极，voltage can go either direction
    • polarized 有极，voltage can only go one direction

  • crystal(tell time), resonator(晶体谐振器)

  • inductor(电感): V = L dI/dt, used as filters that prevent signals changing quickly.

  • diode(二极管): current from anode(正极) to cathode(负极) PN,Schottky,Zener,(what's the difference?) LED

  • transistor(晶体管)

    • bipolar(双极的, always use current): collector(集电极), emitter(发射器), base current gain()
    • mosfet(金属氧化物半导体场效应晶体管): source, drain, gate resistance

  • regulator(调节器)

  • op-amp(运算放大器)

  • microcontroller(微控制器)

    AVR

  • sensors(传感器)

  • actuators(驱动器)

Circuits

Kirchoff's laws: sum current at node, voltage around loop = 0

power: P = I^2 R = I V

Steps: schematic entry(电路图输入), component placement, (auto)routing, simulation, fabrication

Tools：

 123D Circuits, Virtual Breadboard, Fritzing
 Eagle 
 DesignSpark, MultiSIM, BLUE
 KiCad(*), gEDA
 Altium, Circuit Maker, PCBWorks(*)
 OrCAD, Cadence, Synopsys, Mentor, Tanner, Magic
 Gnucap, Qucs, Oregano, Multisim (simulation tools)
 Verilog VHDL (programming)

Fab Modules tutorial

more materials

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