ECE Flashcards
Identify the given description
What is electron flow?
Negative to positive and has five electron
Conventional flow
positive to negative and hole, moving in the same direction as the positive charge flow
P-type material
majority carriers is holes
N-type materials
majority carriers are electrons
types of semiconductor
Silicom, Gallium Arsenide (GaAs), Germanium
What is doping
introducing impurity to intrinsic
What is intrinsic
Pure materials
are doped with impurities to increase conductivity
Extrinsic
Atoms with valency 5; such as Arsenic (As), Phosphorous (Pi), Antimony (Sb), etc.
Pentavalent atoms
trivalent atoms
Atoms with valency of 3
P
anode
N
cathode
flow of charges decreases
depletion region
threshold voltage at which imitation of breakdown
breakdown voltage
conduction band
delocalize band of energy
least abandoned condition of the conduction band
bandgap or energy gap
always filled with electrons, formed by a series of energy
valence band
The peak inverse voltage rating of the diode
half-wave rectifier
types of full-wave rectifier
center tapped rectifier and bridge rectifier
allows unidirectional (oneway)
Full-wave rectifier
Eliminates fluctuations
filter
ripple
small amount of fluctuation
variation in capacitor voltage
ripple voltage
Ripple factor
can be lowered by increasing the value of the filter
connected to the output of a filtered rectifier
voltage regulator
how much changes occurs in the output voltage for the given change
line regulation
how much changes occurs in the output voltage over a certain range
load regulation
are networks that employ diodes to clip away a portion of an input signal
clippers
network constructed of a diode
clamper
special type of semiconductor that convert light to electrical energy or vice versa
optoelectronics devices
LED
two lead semiconductor device has polarity
electroluminescence
the process by which electrons and electron holes recombine in a semiconductor, producing light
a regulator/ device that is designed for operation in the reverse breakdown region
Zener diode
applying high voltage and increasing the free electrons in semiconductors and insulating materials.
Avalanche breakdown
Electrons move across the barrier from the valence band of p type
Zener breakdown
Generate electromagnetic energy
Light Emitting diodes
transform electromagnetic energy
light detecting devices
Photoresistors
Light sensitive variable resistors
Photodiode
2 lead semiconductor that transform light to electric energy
A three lead semiconductor device that
acts as:
o an electrically controlled switch, or
o a current amplifier.
is analogous to a faucet.
Transistor
BJT (NPN AND PNP)
BIPOLAR JUNCTION TRANSISTOR (NPN AND PNP)
JFET (N-CHANNEL AND P-CHANNEL)
JUNCTION FIELD EFFECT TRANSISTOR (N-CHANNEL AND P-CHANNEL)
MOSFET
Depletion type (n- and p-channel) and
enhancement type (n- and p-channel)
METAL OXIDE SEMICONDUCTOR FIELD EFFECT TRANSISTOR
has Voltage Gain but no Current Gain
Common Base Configuration
CURRENT CONTROL DEVICE
BJT
Common Collector Configuration
has Current Gain but no Voltage Gain
a type of transistor that uses an electric
field to control the flow of current in a
semiconductor
FIELD EFFECT TRANSISTOR
has both Current and Voltage Gain
Common Emitter Configuration
commonly
known as MOSFET
Metal-insulator Field Effect Transistor (MISFET)
VOLTAGE CONTROLLED DEVICE
FET
(MESFET)
Metal-semiconductor Field Effect Transistor
What are the two types of BJT
npn pnp
IGFET
Insulated Gate Field Effect Transistor
What applications does the BJT serve?
SWITCHING, AMPLIFICATION
The three terminals of a bipolar junction transistor are called
COLLECTOR, BASE, EMITTER
In transistors, what does 𝛽 represent
CURRENT GAIN OR AMPLIFICATION FACTOR
A type of transistor that uses an electric field to control the flow of current in a semiconductor.
FIELD EFFECT TRANSISTOR
Give the types of FET
METAL OXIDE SEMICONDUCTOR FET
METAL-SEMICONDUCTOR FET
Metal-insulator Field Effect Transistor
The three terminals of a field effect transistor are called
SOURCE, GATE DRAIN