Thyristor convertor type AVR(Automatic Voltage Regulator)
is made of Thyristors(Silicon Controlled Rectifiers,SCRs).
We know that output DC voltage from an SCR will not only
depend upon the r.m.s. value of Input voltage applied, but
also at the angle at which the input AC cycle is fired
(using gate signal). If the firing angle is zero(in a
simple circuit), then maximum DC output voltage will be
obtained.If the firing angle is changed from 0 to 180,then
maximum to minimum voltage is obtained. This property could
be used to build an AVR. The firing angle proportional to
Output voltage could be used to trigger the thyristor,in a
closed loop manner and a nearly constant DC voltage(Average
Value) can be obtained.An invertor circuitory could be
utilised to get a regulated AC supply.
Many other configurations can be build from thyristors to
get a regulated AC supply.
- 0 Answers
- 6435 Views
- I also Faced
- E-Mail Answers
No Answer is Posted For this Question
Be the First to Post Answer
Gilt edged market means
tell me about urself ? why didnt u join earlier when u came for the interview? where do you work and what is your job profile? you have done mass comm and MA in english, y did u join a call centre? is it serving your purpose? y arnt you trying in media and related fields? how much salary do you expect? what are your expectations from the co? why should we hire u? do you think you will be able to handle this profile? are you comfortable with travelling? If not, will you go in for other profiles that we have? good and bad things about you? how soon can you join? wil you need to give prior notics to your co b4 leaving you will not be on co. pay rols and no leaves. is that ok with you?
I need to know more interview questions regarding siebel asked in IBM
WHEN WILL ANNOUNCE RESULTS OF CLERKS IN ORIENTAL BANK OF COMMERCE,THE EXAM CONDUCTED ON 18/01/2009
3 Answers Oriental Bank Of Commerce,
international resume format
mention some of the major contribution made by you in present & previous jobs- Sales Representative
I want to know that as a employee, how should we introduce ourself in front of Company Director.
Don't Think Evil Punchline of Which Co.
Why does Google rank Wikipedia for so many topics? What are some challenges facing the SEO industry?
hello freinds, i have done M.C.A this year. can anybody tells me what is the diffrence between on role and off role jobs in a telecome company & what is the salary diff. of these roles. are software companies also hire employees on onrole & off role ???????????/
what is the difference in Syllabus between Bank POs,GroupI,GroupII For which i can take coaching for please Mail me at s_narayana_swamy@yahoomail.com
what can i do to get friends that will help me financailly pls. and also to get there email
Energy Oil Gas 
