MODULE 4: Diode Applications: Clippers, Clampers and Voltage Multipliers

Question 1

They are diode ________ circuits that are
used to select the part of an arbitrary waveform
which lies above or below some reference level.

Answer 1

waveshaping

Clippers or limiters

Question 2

The output of clipping circuits appears as if a

portion of the input signal was ______.

Answer 2

clipped off

Question 3

clippers are also called as _____ or _____

_______ or ______

Answer 3

voltage or current amplitude selectors

slicers

Question 4

clippers prevents the ______ from exceeding
the certain level and at the same time it does not
_____ the remaining part of the waveform

Answer 4

output waveform

distort

Question 5

clippers are used in ______ ______ circuit to

prevent the circuits from _______ spikes.

Answer 5

overvoltage protection

high voltage

Question 6

The output (load) is in series with the diode.

Answer 6

series clippers

Question 7

The output is taken in parallel with the diode.

Answer 7

parallel clippers

Question 8

The level to which an ac voltage is limited can be
adjusted by adding a bias voltage in series with
the diode.

Answer 8

biased clippers

Question 9

If the diode is in series with the applied voltage,

cutting line is ____.

Answer 9

zero

Question 10

If the diode is in parallel with the applied voltage,

cutting line is the ____ _____

Answer 10

bias voltage

Question 11

If the diode is pointing to the right or upward, all

waveforms ____ cutting line remains.

Answer 11

above

Question 12

If the diode is pointing to the left or downward, all

waveforms _____ cutting line remains

Answer 12

below

Question 13

clamping circuits are used to “clamp” the

waveform to a _____________.

Answer 13

different DC level

Question 14

what are the minimum three element requirements of a clamping circuit

Answer 14

diode, capacitor, resistor

Question 15

The ______ present in the clamping circuit

changes the dc level of the input signal.

Answer 15

capacitor

Question 16

what are the two parameters related to a capacitor

Answer 16

charging and discharging time

Question 17

The capacitor will store energy depending on the

polarity of the input signal.

Answer 17

Charging Time

Question 18

formula of time constant

Answer 18

τ = RC

Question 19

A capacitor will fully discharge in ___ time constants.

__τ

Answer 19

five

Question 20

in a clamping circuit, Start the analysis by considering the part of the
input signal that will ______ the diode.

Answer 20

forward bias

Question 21

Keep in mind the general rule that the total swing
of the ____ must match the swing of the ____
signal.

Answer 21

output

input

Question 22

use clamping action to
increase peak rectified voltages without the
necessity of increasing the transformer’s
voltage rating.

Answer 22

Voltage multipliers

Question 23

voltage multipliers are used in _____, _______ such as cathode-ray tube (CRTs)
and particle accelerators.

Answer 23

high-voltage

low-current
applications

Question 24

A _________ is a voltage multiplier with a

multiplication factor of two.

Answer 24

voltage doubler

Question 25

The addition of another ______ to the half-wave voltage doubler
creates a voltage tripler.

Answer 25

diode-capacitor

section

Question 26

The addition of another diode-capacitor

section to the voltage tripler creates a ________

Answer 26

voltage

quadrupler.