33174719
Description
Flashcards by That Yeti Dog Person, updated more than 1 year ago
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Created by That Yeti Dog Person
over 2 years ago
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| Question | Answer |
| A _____ is a semiconductor device that has two terminals. They conduct electrons and are used to modify voltage input. | diodes |
| A ____ diode is a semiconductor with N and P-type materials that are chemically combined. They form a junction that allows conduction in one direction only. | junction |
| In a diode, the point where the P and N-type materials meet is called the ______. | PN junction |
| The top (positive) side of a diode is called the _____. | anode |
| The bottom (negative) side of a diode is called the _____. | cathode |
| The area around the PN junction where no charge carriers are available is called the __________. | depletion region |
| The depletion region is also sometimes called the ____ region or the ____ region. | insulation, barrier |
| The voltage present across the PN junction is called ____ voltage or junction ____. | voltage, potential |
| When voltage is applied to a diode in the forward direction (cathode to anode), it's called _________. | forward-biasing |
| When voltage is applied to a diode in the reverse direction (anode to cathode), it's called _________. | reverse-biasing |
| A diode's __________ shows the variation of the diode current versus the current across the diode. It's a line graph on a horizontal and vertical axis. | characteristic curve |
| The voltage at which a diode starts conducting is called its ___________. | breakover voltage |
| A ____ diode is a special type of diode designed to allow current to flow backwards without overheating. They are usually made of silicon. | zener |
| ____ diodes are generally used to regulate voltage in power supplies. | zener |
| When the voltage across a device stays the same regardless of the amount of current moving through it, it's called a _________ device. | constant-voltage |
| When a diode reaches its ____ point, it begins to conduct rapidly in the reverse direction. | zener (aka reverse-breakover voltage) |
| The ______ delay of a signal is the measure of the amount of time that it takes for a change in input voltage or current to reach the output port. | propagation |
| Propagation delay is also called _________. | transit time effect |
| ______ emission is the discharge of electrons from heated materials. It's commonly used as a source of electrons in conventional electron tubes. | Thermionic |
| _______ are special diodes used in microwaves and radar systems. | Magnetrons |
| A device that conducts the same amount of current even when the voltage across it changes is called a ________ device. | constant-current |
| Diodes that have a low-voltage positive or negative breakover point are very useful as signal detectors, so they're often called _____ diodes. | signal |
| The _____ or ____ diode gets its name from the fact that it's operated in a reverse-biased mode. | backwards, back |
| A ________ diode is made of a fine metal wire called a cat's whisker mounted w/ pressure against a block of N-type germanium material. | point contact |
| The _______ diode is made of N-type material and metal. This type of diode has no depletion region. | hot carrier |
| The hot carrier diode is also called the ______ diode. | Schottky |
| A _______ diode (___) produces visible light when it's forward biased. They are generally made of gallium arsenide. | light-emitting, LED |
| The word ____ is an acronym for "light amplification by stimulated emission of radiation". | laser |
| The ____ laser was the first type of laser ever made. | ruby |
| _____ light is the type of light produced by ordinary light bulbs. | Incoherent |
| _____ light is the type of light produced by a laser. | Coherent |
| ________ diodes (___) are triggered into conduction when light hits them. | light activated, LAD |
| Devices that are triggered into operation by light are called ______. | photosensitive |
| An _________ is a device that contains both an LED and an LAD in a single light-tight case. | optical coupler |
| A ____ diode is composed of a layer of intrinsic semiconductor material sandwiched between a layer of P-type material and N-type material. | P+N |
| A _____ diode is a type of junction diode that's specially made to be used as a variable capacitor. | varactor |
| A difference of potential between a positive charge and a negative charge is called a ____. | voltage |
| The characteristic curve of an avalanche diode has the same basic shape as the characteristic curve for a ____ diode. | zener |
| Another name for a four-layer diode is a _____ diode. | Schockley |
| The first laser was made with a material called ____. | ruby |
| In a certain diode circuit, all of the negative half cycles of AC are passed, but no part of the positive half cycle above 3 V is passed. The circuit is called a _________ circuit. | positive limiter |
| To protect a meter from accidental overload and accidental reverse voltage, two diodes are used. They're connected in ________. | reverse parallel |
| What type of component is sometimes used as a blown fuse indicator? | neon light |
| An oscillator that operates by charging and discharging a reactive component, and has a nonsinusoidal output voltage is called a _____ oscillator. | relaxation |
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