Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

AC Voltage regulator?

Status
Not open for further replies.

user0n9

Newbie level 4
Joined
Mar 25, 2009
Messages
7
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,347
Hi people,

i wonder is there any AC voltage regulator existed?
my wall socket is providing 240Vac but in order to get a desired AC voltage output at secondary transformer the primary input must be 230Vac.

so is there any way to lower the wall socket output for my application or any other way to do this?

Thanks in advance.
 

yadavvlsi

Advanced Member level 3
Joined
Nov 19, 2010
Messages
978
Helped
485
Reputation
968
Reaction score
454
Trophy points
1,343
Location
Bangalore, India
Activity points
6,991
In an ideal transformer, the induced voltage in the secondary winding (Vs) is in proportion to the primary voltage (Vp), and is given by the ratio of the number of turns in the secondary (Ns) to the number of turns in the primary (Np) as follows:

Vs/Vp=Ns/Np

By appropriate selection of the ratio of turns, a transformer thus allows an alternating current (AC) voltage to be "stepped up" by making Ns greater than Np, or "stepped down" by making Ns less than Np.

You can decrease the no. of turns of secondary coil to get desired output voltage.

You can also purchase a AC voltage regulator form market.
 
Last edited:

chuckey

Advanced Member level 5
Joined
Dec 26, 2010
Messages
4,863
Helped
1,308
Reputation
2,622
Reaction score
1,281
Trophy points
1,393
Location
Southampton and holiday cottage in Wensleydale (UK
Activity points
31,695
There are various AC voltage stabilizers, each one with its own problems, 1. changing taps on transformers. 2. saturable reactor. 3, moving coil regulator. 4 motor driven rotary transformers. 5. solid state PWM.
Frank
 

andre_teprom

Super Moderator
Staff member
Joined
Nov 7, 2006
Messages
9,200
Helped
1,142
Reputation
2,303
Reaction score
1,119
Trophy points
1,403
Location
Brazil
Activity points
53,584
hi chuckey

I would add one more option to your list ( let´s say : 6th ).

Some high powers AC stabilizers imlpements series transformers instead paralel transformer you posted at item 1.
I works either adding or subtracting voltage from certer-taped units.
This way :
1st transformer : 8% of input ( center-taped ).
2nd transformer : 4% of input ( center-taped ).
3rd transformer : 2% of input ( center-taped ).
4th transformer : 1% of input ( center-taped ).
The great advantage is power transformers witth much less size and weight.

With that topology the output can reach +/- 15% regulation ( 1+2+4+8 ) with 1% precision.
Note that each transformer is equivalent to an binary code step.


+++
 
Last edited:

KMoffett

Full Member level 5
Joined
Feb 11, 2008
Messages
297
Helped
43
Reputation
86
Reaction score
22
Trophy points
1,298
Location
Minnesota USA
Activity points
2,771
That's only a +4% error. What are you powering off the secondary that you need that accuracy?

Ken
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top