Hi...
Can any one help me for the designing of 3 phase rectifier using Yie-Delta transformer and rectifier diode to drive 5watt load by applying 17vDC constant voltage to the load.
Transformer has the current transformation ratio of 5A/0.75A.

 

Have you read this chapter in the AAC eBook?

 

Bill, your link didn't imbed properly.
Here's the link:
http://www.allaboutcircuits.com/vol_3/chpt_3/4.html

 

Bill, your link didn't imbed properly.
Here's the link:
http://www.allaboutcircuits.com/vol_3/chpt_3/4.html

In AAC am not getting sufficient information about CT primary to secondary transformation calculation when connected in STAR-DELTA form.
The CT has
Primary=10A
Secondary=1.5A
Whwn 3 phase input current is applied to the CT primary, what current and voltages are developed in the secondary of the CT?

Pls give hints.

 

Transformers don't work with DC.

"CT" usually means "center tap" or "current transformer," neither of which make sense in this case.

You can read about transformers here: http://www.allaboutcircuits.com/vol_2/chpt_9/index.html

You can read about three-phase systems here: http://www.allaboutcircuits.com/vol_2/chpt_10/index.html