Discrete semiconductor devices (AQA A-Level Physics): Flashcards
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Practise the cards
10 cards from this deck
What does MOSFET stand for?
What does MOSFET stand for?
Metal-Oxide-Semiconductor Field-Effect Transistor
How much energy needed for charge movement in semiconductors?
How much energy needed for charge movement in semiconductors?
Small amount of energy
N-type semiconductor has excess of
N-type semiconductor has excess of
Conduction electrons
P-type semiconductor has excess of
P-type semiconductor has excess of
Holes (positive charge carriers)
Three main terminals of a MOSFET
Three main terminals of a MOSFET
Drain, Gate, Source
Cut-off region condition
Cut-off region condition
(MOSFET off)
Saturation region condition
Saturation region condition
(fully on)
definition
definition
Threshold voltage to form conducting channel
Protection diode purpose with inductive loads
Protection diode purpose with inductive loads
Prevents back-emf from damaging MOSFET
What does high input resistance cause on the Gate?
What does high input resistance cause on the Gate?
Electrostatic charge accumulation