Zener Diodes and Temperature Coefficient Quiz

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What type of diode converts an electrical signal into coherent light?

Laser Diode

Which diode is used as a voltage-controlled resistor in microwave applications?

PIN Diode

What type of diode exhibits a negative resistance region between points B and C on its characteristic curve?

Tunnel Diode

Which diode has a metal-to-semiconductor contact and is used primarily in high-frequency applications?

<p>Schottky Diode</p> Signup and view all the answers

Which diode has the most common use as lasers?

<p>Laser Diode</p> Signup and view all the answers

Which diode has a low forward voltage drop and high efficiency but a low reverse voltage rating?

<p>Schottky Diode</p> Signup and view all the answers

What determines whether the temperature coefficient of a zener diode is positive or negative?

<p>Zener voltage</p> Signup and view all the answers

In what region of operation is a zener diode designed to function?

<p>Reverse breakdown</p> Signup and view all the answers

What is the primary application of a zener diode due to its constant breakdown voltage?

<p>Voltage regulation</p> Signup and view all the answers

What is the zener impedance, ZZ, defined as for a zener diode?

<p>Ratio of change in voltage to change in current</p> Signup and view all the answers

What is the primary role of zeners in three-terminal regulators?

<p>Establishing a reference voltage</p> Signup and view all the answers

What is the main purpose of using back-to-back zeners in a circuit?

<p>Limiting the output to a specific voltage</p> Signup and view all the answers

Which type of diode is designed for limiting the voltage across its terminals in reverse bias?

<p>Zener diode</p> Signup and view all the answers

What is the process of releasing light energy by the recombination of electrons in a semiconductor called?

<p>Electroluminescence</p> Signup and view all the answers

Which diode emits light when there is a forward current?

<p>Light-emitting diode</p> Signup and view all the answers

What is the basic unit for producing colored light in an LED display screen?

<p>Pixel</p> Signup and view all the answers

In which region of the characteristic curve does a Current Regulator Diode maintain a constant current?

<p>Horizontal portion region</p> Signup and view all the answers

What type of diode has a single pn junction and conducts current in one direction only?

<p>Diode</p> Signup and view all the answers

What are the majority carriers in n-type materials?

<p>Electrons</p> Signup and view all the answers

Which region of the diode is characterized by a dramatic increase in reverse current?

<p>Zener region</p> Signup and view all the answers

What is the maximum reverse voltage that prevents a diode from entering the Zener region called?

<p>Peak inverse voltage</p> Signup and view all the answers

In which bias condition does a diode change from no-bias to forward-bias?

<p>Forward bias</p> Signup and view all the answers

Which material has an approximate forward bias voltage of 0.7 V?

<p>Silicon diode</p> Signup and view all the answers

How does temperature affect the required forward bias voltage for conduction?

<p>Reduces the required voltage</p> Signup and view all the answers

What is the primary difference between conductors and insulators?

<p>Number of free electrons available for conduction</p> Signup and view all the answers

Why is intrinsic silicon a poor conductor?

<p>Tightly bound electrons in the crystal</p> Signup and view all the answers

What happens when a few electrons jump into the conduction band in intrinsic silicon?

<p>Creation of a positive charge</p> Signup and view all the answers

How does Antimony change the conductivity of silicon?

<p>Adds free electrons to the material</p> Signup and view all the answers

Between conductors, insulators, and semiconductors, where do semiconductors fall in terms of conductivity?

<p>In the middle range of conductivity</p> Signup and view all the answers

Why are holes in intrinsic silicon considered to have mobility?

<p>They move between atoms creating charge movement</p> Signup and view all the answers

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