Previous in Forum: Data Centre Continuous Cooling   Next in Forum: Design of High Power Switch 100 Watts CW
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
9 comments
Rate Comments: Nested
NUKALA
Member

Join Date: May 2011
Posts: 5

220V DC Controll Supply Auto Changeover Scheme

06/09/2011 12:42 AM

Dear All,

I am really striving hard to have a 220V DC supply auto changeover circuit between two different independent DC sources for one of control bus. Can anyone give me the scheme which will help me?
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Anonymous Poster #1
#1

Re: 220V DC CONTROL SUPPLY AUTO CHANGEOVER SCHEME

06/09/2011 12:56 AM

Professional Fee has to be paid.
Register to Reply
Anonymous Poster #2
#2
In reply to #1

Re: 220V DC CONTROL SUPPLY AUTO CHANGEOVER SCHEME

06/09/2011 3:58 AM

same joke again and again
Register to Reply
ramvinod
Guru

Join Date: Jun 2007
Location: chennai,India
Posts: 592
Good Answers: 19
#4
In reply to #2

Re: 220V DC CONTROL SUPPLY AUTO CHANGEOVER SCHEME

06/09/2011 4:47 AM

It is not a joke,one has to spend some time to develope the required scheme.

He has to be compensated for the time, May be he can part knowledge free but time has to be compensated.

__________________
 Ramesh,Freelance Electrical/automation Consultant
Register to Reply
NUKALA
Member

Join Date: May 2011
Posts: 5
#6
In reply to #1

Re: 220V DC CONTROL SUPPLY AUTO CHANGEOVER SCHEME

06/09/2011 7:21 AM

Really

What u have said is a biggest joke.
Register to Reply
TonyS
Guru
United Kingdom - Member - New Member

Join Date: Aug 2010
Location: Resting under the Major Oak
Posts: 4347
Good Answers: 181
#3

Re: 220V DC CONTROL SUPPLY AUTO CHANGEOVER SCHEME

06/09/2011 4:26 AM

Seems reasonable to me to charge for design work.

__________________
 The reports of my death are greatly exaggerated.
Register to Reply
67model
Guru

Join Date: Dec 2010
Posts: 1686
Good Answers: 116
#5

Re: 220V DC CONTROL SUPPLY AUTO CHANGEOVER SCHEME

06/09/2011 5:50 AM

Supply 1 Supply 2

+------->|--------------•-------------|<--------------+

.................................Load

- ----------------------•----------------------------- -

N.B. Diodes
Register to Reply
PWSlack
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#7
In reply to #5

Re: 220V DC CONTROL SUPPLY AUTO CHANGEOVER SCHEME

06/09/2011 7:21 AM

Oh, look. A freebie!

__________________
 "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Register to Reply
cuba_pete
Guru

Join Date: Dec 2010
Posts: 1895
Good Answers: 44
#8

Re: 220V DC Controll Supply Auto Changeover Scheme

06/09/2011 12:20 PM

How auto? Like, a small child with quick reflexes? That may be cheap in a country with lax child labor laws.
Register to Reply
abhayambuj
Participant

Join Date: Aug 2013
Posts: 1
#9

Re: 220V DC Controll Supply Auto Changeover Scheme

10/20/2015 9:18 AM

Hi Nakul,

I just saw the correspondence today. Its sad that people on the forum are looking for money when its a collaborative technical forum.

Maybe the moderators should keep such guys off. It will not help develop new ideas on the group.

Look for the contactor based scheme for automatic changeover between two different independent schemes.

I can provide you with a snapshot if you really need one by this time.
Register to Reply
Register to Reply
Have a Different Question?
9 comments
Copy to Clipboard

Users who posted comments:

67model (1); abhayambuj (1); Anonymous Poster (2); cuba_pete (1); NUKALA (1); PWSlack (1); ramvinod (1); TonyS (1)

Previous in Forum: Data Centre Continuous Cooling   Next in Forum: Design of High Power Switch 100 Watts CW

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Electrical Engineering:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (128 right now)
Show Members
Advertisement