Voltage Multipliers and Special Purpose Diodes
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Questions and Answers

What phenomenon did Edison discover in 1883, which is known as the Edison Effect?

One-way electron flow

What is the function of the grid in a triode tube?

Amplifying device

What is the term for a device that allows only a specific range of voltage to pass through, above which it functions as a conductor?

Zener Diode

What type of circuit is used to change the DC level of a signal, shifting it upwards or downwards?

<p>Clamper Circuit</p> Signup and view all the answers

What is the name of the device that converts a low voltage AC signal into a high voltage DC signal?

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

What is the term for a device that limits the voltage in a circuit to a specific level, preventing overvoltage?

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

What is the primary function of a voltage multiplier circuit?

<p>To deliver an output voltage whose amplitude is two, three, or more times greater than the amplitude of the input voltage</p> Signup and view all the answers

What is the characteristic of a Zener diode operated in the reverse breakdown region?

<p>The voltage across the diode remains constant over a range of reverse current and nearly equal to its Zener voltage rating</p> Signup and view all the answers

What is the difference between Avalanche Breakdown and Zener Breakdown?

<p>Avalanche Breakdown occurs at high reverse voltages, while Zener Breakdown occurs at relatively low reverse voltages</p> Signup and view all the answers

What is the purpose of a half-wave voltage doubler?

<p>To produce an output voltage whose amplitude is twice that of the input voltage amplitude</p> Signup and view all the answers

What is a special purpose diode that is designed to operate in the reverse breakdown region?

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

Why are the n-type and p-type materials of a Zener diode heavily doped?

<p>To create a very narrow depletion region, resulting in an intense electric field that can pull electrons from their valence bands and create a low reverse voltage</p> Signup and view all the answers

What is the purpose of a clipping circuit in a signal?

<p>To remove the part of a signal that is above or below some defined reference level.</p> Signup and view all the answers

What is a parallel-biased clipper, and what does it do?

<p>A parallel-biased clipper is a circuit that clips the positive and negative going portions of the input signal simultaneously.</p> Signup and view all the answers

What is the main characteristic of a Zener diode that makes it useful in certain applications?

<p>A Zener diode has been optimized for operation in the breakdown region.</p> Signup and view all the answers

What is the function of a clamper circuit, also known as a dc restorer?

<p>A clamper circuit shifts an input signal by an amount defined by an independent voltage source.</p> Signup and view all the answers

What is the significance of the low resistance setting (1K ohm) on a digital multimeter when testing a diode for forward bias?

<p>It allows the multimeter to measure the low resistance of the diode when it is forward-biased.</p> Signup and view all the answers

What does it indicate if a multimeter shows a very high resistance value or OL when testing a diode for reverse bias?

<p>The diode is good and functions properly.</p> Signup and view all the answers

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