Discuss
menu
search
person
Login
Register
search
edit
Ask a Question
Discuss
All Activity
Q&A
Questions
Hot!
Unanswered
Tags
Users
Ask a Question
explain TCPAR & voltage regulator
Speak Question
asked
Oct 12, 2017
by
pavan
Thyristor controlled phase angle regulator
thyristor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
143
views
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
1
Answer
Speak Answer
answered
Oct 12, 2017
by
anonymous
edited
Jan 18, 2018
by
anonymous
Thyristor controlled phase angle regulator
thumb_up_alt
0
like
thumb_down_alt
0
dislike
Please
log in
or
register
to add a comment.
← Prev Question
Next Question →
Related questions
asked
Feb 19, 2018
by
anonymous
Explain thyristor gate drive circuit.
Explain thyristor gate drive circuit.
Last answer:
Thyristor Gate Drive Circuit: The thyristor can be turned on by pulse voltage signal at gate terminal and it does not require continuous drive signal like the transistor. The gate ... circuit provide required minimum gate voltage and gate current then the thyristor conducts properly.
thyristor
gate
drive
circuit
thumb_up_alt
0
like
thumb_down_alt
0
dislike
2.8k
views
1
answer
asked
Sep 2, 2018
by
anonymous
Explain with circuit diagram operation of zener diode as a voltage regulator.
Explain with circuit diagram operation of zener diode as a voltage regulator.
Last answer:
Zener diode as voltage regulator: Zener Diodes can be used to produce a stabilised voltage output with low ripple under varying load current conditions. By passing a small current through the ... across the load in spite of variations in the input voltage or changes in the load current.
thumb_up_alt
0
like
thumb_down_alt
0
dislike
505
views
4
answers
asked
Sep 21, 2017
by
anonymous
thyristor have how many terminals?
Last answer:
Thyristor have three terminals anode, cathode and Gate.
terminals
thyristor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
46
views
1
answer
asked
Sep 10, 2017
by
anonymous
thyristor can be turned off by?
Last answer:
Thyristor can be turned off by making anode potential equal to cathode potential or by making anode potential less than cathode potential.
thyristor
turned
off
thumb_up_alt
1
like
thumb_down_alt
0
dislike
97
views
1
answer
asked
Sep 10, 2017
by
anonymous
what is thyristor commutation?
Last answer:
Thyristor commutation means turning off thyristor.
thyristor
commutation
thumb_up_alt
0
like
thumb_down_alt
0
dislike
114
views
1
answer
asked
Sep 10, 2017
by
anonymous
why thyristor is called semi controlled device?
Last answer:
Thyristor can only be turned on by small gate pulse but it cannot be turn off by using gate hence thyristor is called semi controlled device.
thyristor
semi
controlled
device
thumb_up_alt
0
like
thumb_down_alt
0
dislike
966
views
1
answer
asked
Sep 10, 2017
by
anonymous
why thyristor is called latching device?
Last answer:
Thyristor can be turn on by positive gate pulse and the current will continue to flow through the device even when the gate voltage is low hence thyristor is called latching device.
thyristor
latching
device
thumb_up_alt
1
like
thumb_down_alt
0
dislike
614
views
1
answer
asked
Jun 15, 2020
by
anonymous
Sketch circuit diagram of transistorized series voltage regulator and explain its working.
Sketch circuit diagram of transistorized series voltage regulator and explain its working.
Last answer:
* This regulator has a transistor in series to the Zener regulator and both in parallel to the load. The transistor works as a variable resistor, regulating its collector emitter voltage in ... of output voltage compensates the initial increase in output voltage. Thus it acts as a regulator.
thumb_up_alt
0
like
thumb_down_alt
0
dislike
25
views
1
answer
asked
May 3, 2020
by
anonymous
Describe the working principle of Thyristor operated dimmer with the help of circuit diagram.
Describe the working principle of Thyristor operated dimmer with the help of circuit diagram.
Last answer:
Thyristor operated dimmer: A popular thyristor operated dimmer circuit employ TRIAC-DIAC phase control for low AC power control. During each half-cycle, the capacitor charges through (R1+VR1). When the ... time constant {C (R1+VR1)}. Thus by reducing VR1 the lamp brightness can be increased.
describe
the
working
principle
of
thyristor
operated
dimmer
with
help
circuit
diagram
thumb_up_alt
0
like
thumb_down_alt
0
dislike
179
views
1
answer
asked
May 8, 2018
by
anonymous
Thyristor can be protected from over voltages by using
Thyristor can be protected from over voltages by using
Last answer:
Thyristor can be protected from over voltages by using Voltage clamping device
thyristor
protected
over
voltages
thumb_up_alt
0
like
thumb_down_alt
0
dislike
83
views
1
answer
asked
May 8, 2018
by
anonymous
Leakage current flows through the thyristor in
Leakage current flows through the thyristor in
Last answer:
Leakage current flows through the thyristor in Forward blocking mode and Reverse blocking mode.
leakage
current
flows
thyristor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
161
views
1
answer
asked
Mar 19, 2018
by
anonymous
What is a phase control thyristor?
What is a phase control thyristor?
phase
control
thyristor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
138
views
0
answers
asked
Mar 19, 2018
by
anonymous
Why thyristor are not preferred for inverter?
Why thyristor are not preferred for inverter?
thyristor
preferred
inverter
thumb_up_alt
0
like
thumb_down_alt
0
dislike
432
views
0
answers
asked
Mar 19, 2018
by
anonymous
What is thyristor family?
What is thyristor family?
thyristor
family
thumb_up_alt
0
like
thumb_down_alt
0
dislike
56
views
0
answers
asked
Mar 19, 2018
by
anonymous
What is meant by firing angle of thyristor?
What is meant by firing angle of thyristor?
Last answer:
The point at which SCR is triggered is known as firings angle of thyristor.
firing
angle
thyristor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
174
views
1
answer
asked
Mar 19, 2018
by
anonymous
What is the use of a thyristor in a circuit?
What is the use of a thyristor in a circuit?
use
thyristor
circuit
thumb_up_alt
0
like
thumb_down_alt
0
dislike
2.8k
views
0
answers
asked
Mar 19, 2018
by
anonymous
What is a reverse conducting thyristor?
What is a reverse conducting thyristor?
reverse
conducting
thyristor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
72
views
0
answers
asked
Mar 19, 2018
by
anonymous
What is the function of a thyristor?
What is the function of a thyristor?
function
thyristor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
72
views
0
answers
asked
Mar 19, 2018
by
anonymous
Why SCR is called as thyristor?
Why SCR is called as thyristor?
scr
thyristor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
82
views
0
answers
asked
Mar 19, 2018
by
anonymous
Is a SCR a thyristor?
Is a SCR a thyristor?
Last answer:
Yes, SCR is a thyristor. Thyristor is the family and SCR is the member of that family but SCR is universally known as thyristor.
scr
thyristor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
143
views
1
answer
asked
Mar 19, 2018
by
anonymous
How is a thyristor used to convert AC to DC?
How is a thyristor used to convert AC to DC?
thyristor
used
convert
ac
dc
thumb_up_alt
0
like
thumb_down_alt
0
dislike
97
views
0
answers
asked
Mar 19, 2018
by
anonymous
What is the application of thyristor?
What is the application of thyristor?
application
thyristor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
73
views
0
answers
asked
Mar 6, 2018
by
anonymous
Is thyristor a DC switch?
Last answer:
Yes ,it is one of the main advantage using thristors as a switch in DC circuit ,it has a high current gain
thyristor
dc
switch
thumb_up_alt
0
like
thumb_down_alt
0
dislike
134
views
2
answers
asked
Dec 7, 2017
by
anonymous
parallel operation of mosfet can be done more easily as compared to thyristor. why?
parallel operation of MOSFET can be done more easily as compared to thyristor. why?
Last answer:
Parallel operation of MOSFET can be done more easily as compared to thyristor because the resistance of MOSFET is increases with increase in temperature. MOSFET have the positive temperature coefficient. In ... the parallel operation of MOSFET can be done more easily as compared to the thyristor.
mosfet
thyristor
parallel
operation
thumb_up_alt
2
like
thumb_down_alt
0
dislike
264
views
1
answer
asked
Dec 6, 2017
by
anonymous
what are the disadvantages of thyristor?
what are the disadvantages of thyristor?
Last answer:
Disadvantages of thyristor The silicon controlled rectifier (SCR) is unidirectional devices, so it can control power only in DC power during positive half cycle of AC supply. Thus only DC power is ... cycle. It cannot be used at higher frequencies. The gate current cannot be negative
disadvantages
thyristor
thumb_up_alt
1
like
thumb_down_alt
0
dislike
767
views
2
answers
asked
Nov 15, 2017
by
anonymous
write short notes on thyristor CSI .
write short notes on thyristor CSI .
Last answer:
Current-source inverter (CSI) is an inverter with a DC current input. Current source inverters are most commonly used in very high power AC motor drives.
thyristor
csi
thumb_up_alt
1
like
thumb_down_alt
0
dislike
91
views
2
answers
asked
Sep 21, 2017
by
anonymous
What is mean by forced commutation of thyristor?
Last answer:
By using some circuit the forward DC current of thyristor is forced to zero is called forced commutation.
forced
commutation
thyristor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
89
views
1
answer
asked
Sep 21, 2017
by
anonymous
What is mean by natural commutation of thyristor?
Last answer:
Natural commutation is also called as line Communication. The turning off of thyristor due to AC supply is called natural commutation or line commutation. If the thyristor is connected to AC supply ... connected to positive and anode terminal get connected to negative, this turns off the thyristor.
natural
commutation
thyristor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
72
views
1
answer
asked
Sep 21, 2017
by
anonymous
can we turn off thyristor using Gate?
Last answer:
No we cannot turn off normal thyristor using Gate.
thyristor
turn
off
using
gate
thumb_up_alt
0
like
thumb_down_alt
0
dislike
69
views
1
answer
asked
Sep 21, 2017
by
anonymous
when a thyristor conducts?
Last answer:
Thyristor conducts when the anode voltage is greater than cathode and when the current provided to Gate.
thyristor
conduct
thumb_up_alt
0
like
thumb_down_alt
0
dislike
71
views
1
answer
asked
Aug 9, 2017
by
anonymous
Thyristor Switched Capacitor (TSC)
Thyristor Switched Capacitor (TSC)
Last answer:
Thyristor Switched Capacitor (TSC) TSC is a static compensator. TSC is use for compensating reactive power. Compensation is required for voltage regulation, increasing stability, ... compensating device like TCS phase angle between voltage and current can be maintain.
thyristor
switched
capacitor
tsc
thumb_up_alt
0
like
thumb_down_alt
0
dislike
170
views
1
answer
asked
Aug 8, 2017
by
anonymous
what is TCSC?
what is TCSC?
Last answer:
Thyristor Controlled Series Capacitor (TCSC)
tcsc
thyristor
controlled
series
capacitor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
207
views
1
answer
asked
Aug 8, 2017
by
anonymous
what is gate turn off thyristor (GTO)?
Draw the structural diagram of GTO. Explain briefly the switching behavior of GTO with the help of appropriate voltage and current waveform.
Last answer:
Gate Turn Off Thyristor (GTO) Conventional Thyristor can be turned on with gate terminal but can not turn off from gate terminal. But in case of Gate Turn Off Thyristor (GTO), we can turn it on and off ... subdivided as storage period (Ts), fall period (Tp) and tail period (Tt).
gto
gate
turn
off
thyristor
voltage
current
waveform
switching
characteristics
thumb_up_alt
0
like
thumb_down_alt
0
dislike
1.6k
views
1
answer
asked
Jan 1, 2019
by
Furmouth
voltage regulator on power supply
…Hi, When we supply the microcontroller we use 12V step down transformer> rectifier> filter> 5V voltage regulator. Why not use? 5V transformer> rectifier>filter only. And what voltage regulator will do in our microcontroller?
Last answer:
The powering supply voltage to a microcontroller is 5v if you use a 5v transformer if there is loss of power your output voltage will be drop in the rectifier and there will be change in voltage these can be overcome using a regulator it will give a constant output
thumb_up_alt
0
like
thumb_down_alt
0
dislike
169
views
1
answer
asked
Oct 17, 2018
by
anonymous
what is a voltage regulator
thumb_up_alt
0
like
thumb_down_alt
0
dislike
96
views
0
answers
asked
Jun 18, 2018
by
anonymous
A zener voltage regulator has load requirements of 12 V and 2 A. The zener diode minimum current
A zener voltage regulator has load requirements of 12 V and 2 A. The zener diode minimum current requirement is 0.2 A. The minimum voltage at input is 24 V. What is the required value of series resistance with source? A) 5.45 Ω B) 6 Ω C) 7.2 Ω D) 6.38 Ω
Last answer:
A zener voltage regulator has load requirements of 12 V and 2 A. The zener diode minimum current requirement is 0.2 A. The minimum voltage at input is 24 V. What is the required value of series resistance with source? A) 5.45 Ω B) 6 Ω C) 7.2 Ω D) 6.38 Ω
zener
voltage
regulator
load
diode
minimum
current
thumb_up_alt
0
like
thumb_down_alt
0
dislike
2.6k
views
1
answer
asked
May 14, 2018
by
anonymous
The device used for voltage regulator is
The device used for voltage regulator is
Last answer:
The device used for voltage regulator is zener diode
thumb_up_alt
0
like
thumb_down_alt
0
dislike
47
views
1
answer
asked
Apr 12, 2018
by
anonymous
In a feedback series regulator circuit, the output voltage is regulated by controlling the
In a feedback series regulator circuit, the output voltage is regulated by controlling the a. Magnitude of the I/P voltage b. Gain of the feedback transistor c. Voltage drop across the series pass transistor d. Reference voltage
thumb_up_alt
0
like
thumb_down_alt
0
dislike
120
views
0
answers
asked
Mar 20, 2018
by
anonymous
The voltage regulation in magnetic amplifier type voltage regulator is effected by?
Last answer:
The voltage regulation in magnetic amplifier type voltage regulator is effected by varying the reactance.
voltage
regulation
magnetic
amplifier
type
regulator
effected
thumb_up_alt
0
like
thumb_down_alt
0
dislike
84
views
1
answer
asked
Aug 5, 2019
by
anonymous
What is Psychrometer ? Explain dry bulb thermometer & wet bulb thermometer.
What is Psychrometer ? Explain dry bulb thermometer & wet bulb thermometer.
Last answer:
Psychrometers are instruments used for measuring relative humidity. Explanation:- A psychrometer, or wet-and-dry-bulb thermometer, consists of two thermometers, one that is dry and one ... thermometer and the difference in temperatures as shown by the wet-bulb and dry-bulb thermometers.
psychrometer
thumb_up_alt
0
like
thumb_down_alt
0
dislike
55
views
1
answer
asked
Aug 4, 2019
by
anonymous
Explain space diagram & vector diagram
Explain space diagram & vector diagram
Last answer:
Space diagram: It is the diagram in which number of forces acting on body is drawn in space to a suitable scale and naming the spaces in order by Bow's notation. Vector diagram: It is the ... of the forces drawn in space diagram by maintaining the same order as it was maintained in space diagram.
space
diagram
vector
thumb_up_alt
0
like
thumb_down_alt
0
dislike
38
views
1
answer
asked
Sep 5, 2018
by
anonymous
Explain construction & working of attraction type M.I. instrument with neat diagram.
Explain construction & working of attraction type M.I. instrument with neat diagram.
Last answer:
1. Moving element: a small piece of soft iron in the form of a vane or rod. 2. In Attracted type a cylindrical coil or solenoid which is kept fixed. An oval-shaped soft-iron piece are ... 9. When = the pointer will be stable & we can get correct reading of the electrical quantity
construction
working
attraction
type
mi
instrument
diagram
thumb_up_alt
0
like
thumb_down_alt
0
dislike
3.0k
views
2
answers
asked
Sep 5, 2018
by
anonymous
Explain construction & working of electrodynamometer type wattmeter.
Explain construction & working of electrodynamometer type wattmeter.
Last answer:
Electrodynamometer Type Wattmeter: Construction: It essentially consists of the fixed and moving coil. The fixed coil is split into two equal parts which are placed close together and parallel to each other. ... hence these instruments can be used for measurement of A.C. & D.C. power.
construction
working
electrodynamometer
type
wattmeter
thumb_up_alt
0
like
thumb_down_alt
0
dislike
595
views
1
answer
asked
Sep 5, 2018
by
anonymous
List the different errors in wattmeter & explain compensation for it.
List the different errors in wattmeter & explain compensation for it.
Last answer:
Errors in Wattmeter Compensation method Error due to connection method To overcome this error, wattmeters are provided with additional compensating winding which is connected in series with ... due to friction The weight of moving system be reduced to minimum possible.
different
errors
wattmeter
explain
compensation
thumb_up_alt
0
like
thumb_down_alt
0
dislike
5.5k
views
1
answer
asked
Sep 4, 2018
by
anonymous
Explain in detail the construction & working of He-Ne laser.
Explain in detail the construction & working of He-Ne laser.
Last answer:
Construction : 1. It consists of a quartz tube of about 80 cm length and 1.5 cm diameter. 2. The tube is filled with mixture of helium (He) and neon (Ne) gas. 3. The mixture consists of 90% helium ... LASER is produced by He-Ne gas LASER The energy level diagram of He-Ne LASER is shown below.
thumb_up_alt
0
like
thumb_down_alt
0
dislike
385
views
1
answer
asked
Sep 3, 2018
by
anonymous
Explain Laplace’s molecular theory of liquid & hence define surface tension.
Explain Laplace’s molecular theory of liquid & hence define surface tension.
Last answer:
Consider three molecules A, B & C of the liquid. A sphere of influence is drawn as shown in fig.The sphere of influence of molecule A' is completely inside the liquid, so it ... surface of liquid is under constant tension due to the tendency to contract and occupy minimum surface area.
thumb_up_alt
0
like
thumb_down_alt
0
dislike
2.8k
views
1
answer
asked
Sep 2, 2018
by
anonymous
Explain the concept of NO & NC contact. State its applications.
Explain the concept of NO & NC contact. State its applications.
Last answer:
NO and NC contacts are standard set of contacts available with an electromechanical relay. NO contacts are open in normal condition. When the relay coil is energized, NO contacts are closed. NC ... based control circuits 2) Relay equivalent of NO/NC contacts are used in all ladder diagrams.
thumb_up_alt
0
like
thumb_down_alt
0
dislike
303
views
1
answer
asked
Sep 2, 2018
by
anonymous
Explain the function of ROM & RAM memory of PLC.
Explain the function of ROM & RAM memory of PLC.
Last answer:
Read Only Memory (ROM) is used by PLC for storing operating system. The operating system is programmed by the manufacturer. Random access memory (RAM) is a Read Write memory and used by ... store temporary data like status of I/O pins, temporary results of calculations, timer counter values etc.
thumb_up_alt
0
like
thumb_down_alt
0
dislike
56
views
1
answer
asked
Sep 5, 2018
by
anonymous
Enlist names of regulator IC’s .
Enlist names of regulator IC’s .
Last answer:
1. Fixed Voltage Regulators IC - a. Positive voltage regulator IC’s - 78XX series eg. 7805, 7812 etc. b. Negative voltage regulator IC’s - 79XX series eg. 7905, 7912 etc. 2. Adjustable Voltage Regulator - LM317 is example of positive adjustable voltage regulator.
names
regulator
ics
thumb_up_alt
0
like
thumb_down_alt
0
dislike
54
views
1
answer
asked
Sep 5, 2018
by
anonymous
What is regulator ? State its need.
What is regulator ? State its need.
Last answer:
A voltage regulator is a circuit or device designed to deliver a constant voltage at its output regardless of changes in ac supply voltage and load current. Need:- A voltage regulator is one ... unexpected result or damage one of the components in the circuit, hence voltage regulator is needed.
regulator
need
thumb_up_alt
0
like
thumb_down_alt
0
dislike
51
views
1
answer
Install Now
...