Quiz 1 Flashcards
(16 cards)
Negative on N material - Positive on P material
Forward Bias
What is the ripple frequency of (DC variations) from a half wave power supply
60Hz.
A) Conduct in either direction
B) This material typically has one valence electron
Conductors
A) An instalator-no current current carriers present
B) This material has 4 valence electrons but acts as if it had 8 to covalent bonding.
Pure silicon crystal
What is the Voltage drop across a diode that is reversed biased
All of the supply
Material that has vacancies in the valence bands
P-Type of Material
What is the ripple frequency of (DC variations) from a full wave power supply
120 Hz.
A) this material typically has 8 valence electrons
B) Will not conduct in either direction
Insulators
Conduct in either direction
Resistors
What is the Voltage drop across a diode that is conducting
.7 Voats
An insulator-no current carriers present
Depletion Area
Material that has free electrons outside of the crystal structure
N-Type Material
Negative on P material- Positive of N material
Reverse Bias
A)Prevents further recombination
B) .7 Vlots
Barrier Potential :The natural difference of potential that exists across a on junction.
Barrier Potential
Recombination
A term to used to describe the process of a free electron giving up its energy and returning to a valence band orbit.
How to calculate Supply Voltages from a secondary transformer?
If the transformer center tap is used then only use half of the secondary input voltage supply time 1.414.
If the transformer center tap is not use all then use all of the secondary input voltage supply time 1.414.
