Full Wave Rectifier: Get Answers to Your Questions

In summary, the conversation discussed the usage of the secondary coil of a transformer when applying a sine wave at the ends. It was concluded that only half of the secondary coil will be used at a time, as the diodes will only allow current to flow in one direction depending on the polarity. The question was clarified and the response was appreciated.
  • #1
cupid.callin
1,132
1
Hi all

attachment.php?attachmentid=47010&stc=1&d=1336314638.jpg


So my question is, ...
suppose we apply sine wave at the 2 ends, th the cycle [itex]0 \rightarrow \pi[/itex] will all the coils of secondary coil of transformer be used or just upper half of it (assuming currently upper side is getting positive polarity) ...
I think only half should be used ...

Any help?
 

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  • #2
"Used" is a bit vague, but if you mean that current will flow only in the upper half of the secondary for the indicated polarity then yes, only half of the secondary is "used" at a time. Note that while both halves of the secondary will have the same potential drop across them the diodes will permit only one of the loops currents to flow depending upon the polarity.
 
  • #3
gneill said:
"Used" is a bit vague

:-p


gneill said:
but if you mean that current will flow only in the upper half of the secondary for the indicated polarity then yes, only half of the secondary is "used" at a time. Note that while both halves of the secondary will have the same potential drop across them the diodes will permit only one of the loops currents to flow depending upon the polarity.

Ah! That's all I wanted to know !
Thanks again for your help gneill !
 

Related to Full Wave Rectifier: Get Answers to Your Questions

1. What is a full wave rectifier?

A full wave rectifier is an electrical circuit that converts an alternating current (AC) into a direct current (DC). It uses diodes to allow current flow in only one direction, resulting in a smoother output compared to a half wave rectifier.

2. How does a full wave rectifier work?

A full wave rectifier works by using four diodes arranged in a bridge configuration. During the positive half cycle of the AC input, two diodes conduct and allow current to flow through the load. On the negative half cycle, the other two diodes conduct and the current flows in the opposite direction, resulting in a unidirectional output.

3. What are the advantages of a full wave rectifier?

The advantages of a full wave rectifier include a higher output voltage and better efficiency compared to a half wave rectifier. It also produces a smoother output with less ripple, making it suitable for powering electronic devices.

4. What are the applications of a full wave rectifier?

A full wave rectifier is commonly used in power supplies for electronic devices, such as laptops and televisions. It is also used in battery chargers, motor control circuits, and audio amplifiers.

5. How do I calculate the output voltage of a full wave rectifier?

The output voltage of a full wave rectifier can be calculated by multiplying the peak voltage of the AC input by 0.636. This is because the output voltage of a full wave rectifier is approximately 0.636 times the peak voltage of the input. However, this value may vary slightly depending on the load and other factors.

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