Copy and Edit

SEMICONDUCTORS

Description

Mind Map on SEMICONDUCTORS, created by Marielle Moralde on 30/04/2017.
Marielle Moralde
Mind Map by Marielle Moralde, updated more than 1 year ago
Marielle Moralde
Created by Marielle Moralde over 7 years ago
290
0
0

Resource summary

SEMICONDUCTORS
  1. WHAT IS IT?
    1. It acts both as a conductor and as an insulator; they have the ability to work "part-time"
      1. It's versatility lies on the fact that the conductivity can be controlled to produce effects such as:
        1. AMPLIFICATION
          1. RECTIFICATION
            1. OSCILLATION
              1. SIGNAL-MIXING
                1. SWITCHING
              2. WHAT ARE THE DIFFERENT TYPES OF SEMICONDUCTIORS?
                1. SILICON
                  1. cheap and factory-made
                    1. widely used in:
                      1. diodes
                        1. transistors
                          1. integrated circuits
                        2. GERMANIUM
                          1. pure form is a poor conductor in electricity
                            1. doped
                              1. low voltage
                                1. low resistance to heat; easily destroyed by it
                                2. SELENIUM
                                  1. has a resistance that is dependent upon light
                                    1. photoconductivity
                                      1. photocells
                                        1. used in certain types of rectifiers
                                          1. can withstand brief transients and abnormally high surges of voltage
                                          2. GALLIUM ARSENIDE
                                            1. very expensive
                                              1. functions at high frequencies
                                                1. immune to ionizing radiation
                                                  1. used in integrated circuits
                                                  2. METAL OXIDES
                                                    1. MOS
                                                      1. CMOS
                                                        1. draw so little current a battery lasts as long as its shelf life
                                                          1. easily damaged by static electricity
                                                        2. TRANSISTORS AND VACUUM TUBES AND INTEGRATED CIRCUITS
                                                          1. VACUUM TUBES- used to be the backbone of electronic equipment; size ranges from the size of the thumb to that of the fist; sometimes it works better than transistors
                                                            1. TRANSISTORS- smaller, easier to use; technology became smaller
                                                              1. INTEGRATED CIRCUITS- came after transistors; can do the work of hundreds of vacuum tubes
                                                              2. DOPING- the adding of impurities to alter the conductivity of the material
                                                                1. acceptor impurities
                                                                  1. conducts by means of hole flow
                                                                    1. deficiency of electrons
                                                                      1. materials such as:
                                                                        1. indium
                                                                          1. aluminium
                                                                            1. boron
                                                                              1. gallium
                                                                            2. donor impurities
                                                                              1. conducts mainly by means of electron flow
                                                                                1. include:
                                                                                  1. antimony
                                                                                    1. arsenic
                                                                                      1. bismuth
                                                                                        1. phosphorus
                                                                                      2. flow domination
                                                                                        1. for donor impurities: electron flow dominates the current
                                                                                          1. for acceptor impurities: hole flow dominates
                                                                                        Show full summary Hide full summary

                                                                                        Want to create your own Mind Maps for free with GoConqr? Learn more.

                                                                                        Similar

                                                                                        Electronics
                                                                                        ahmad67uk
                                                                                        INTRODUCTION - Basic Semiconductor Components: Diodes (Mod.4 Sect.2 Part 3)
                                                                                        That Yeti Dog Person
                                                                                        What is Electronics? (Introduction)
                                                                                        That Yeti Dog Person
                                                                                        Introduction to Electricity (Mod. 1 pt2)
                                                                                        That Yeti Dog Person
                                                                                        Calculating Circuit Resistance (Mod.2 sect.2 part1) 1 of 2
                                                                                        That Yeti Dog Person
                                                                                        Ohm's Law -REVIEW SECTION- (Mod.2 Sect.2 part2)
                                                                                        That Yeti Dog Person
                                                                                        Power in DC Circuits (Mod.2 Sect.2 part3)
                                                                                        That Yeti Dog Person
                                                                                        Simple Systems
                                                                                        Kieran C
                                                                                        Resistor Color Codes
                                                                                        That Yeti Dog Person
                                                                                        Special Battery Types (Mod. 2 pt6)
                                                                                        That Yeti Dog Person
                                                                                        Relative Conductivity of Metals at 20 Degrees Celsius
                                                                                        That Yeti Dog Person
                                                                                        Browse Library