Special-purpose-diodes Flashcards
Schottky diodes are also known as
Hot carrier diodes
Zener diodes with breakdown voltages less than 5 V operate predominantly in what type of breakdown?
Zener
The Schottky diode is used
very fast-switching circuits
You have an application for a diode to be used in a tuning circuit. A type of diode to use might be
Varactor Diode
What kind of diode is formed by joining a doped semiconductor region with a metal
Schottky Diode
Which diode employs graded doping?
Step Recovery Diode
LEDs are made out of
Gallium
The normal operating region for a zener diode is the
reverse-breakdown region
An LED is forward-biased. The diode should be on, but no light is showing. A possible trouble might be
the diode is open
A 6.2 V zener is rated at 1 watt. The maximum safe current the zener can carry is
161 mA
The process of emitting photons from a semiconductive material is called
electroluminescence
An 8.2 V zener has a resistance of 5. The actual voltage across its terminals when the current is 25 mA is
8.325 V
What diode operates only with majority carriers?
Schottky
What type of diode maintains a constant current?
Current Regulator
What diode is used in seven-segment displays?
LED DIODE
Zener diodes with breakdown voltages greater than 5 V operate predominantly in what type of breakdown?
Avalanche
Back-to-back varactor diodes are used for what reason?
to eliminate harmonic distortion
A tunnel diode is used
in circuits requiring negative resistance.
What type of diode is commonly used in electronic tuners in TVs?
Varactor Diode
A laser diode normally emits
coherent and monochromatic light
A varactor is a pn junction diode that always operates in ________-bias and is doped to ________ the inherent capacitance of the depletion region.
reverse, maximize
