Hi

I'm beginner in this stuff so please your reply simple. Thanks

I did an experiment on full wave rectification using center tap transformer. The transformer read: Input 220V, Output 12V, 12V. I used two diodes and 1 micro farad capacitor. As you see capacitor's capacitance is very little so it didn't effect the overall output because I checked the output without using it and there was not much difference. The peaks had amplitude of 18V. I connected oscilloscope across the resistor. Have a look on the the given diagram:

RMS vs. Peak

RMS = peak / √2

12 ~= 18/√2

Which means my output was correct. Because the transformer had 12V across each of its secondaries.

I used the formula, ripple factor=IL/FC. IL was almost 12.09 mA. I used the value of F as 60 Hz which was the frequency of AC source and the voltage of AC was 220V.

I think the instructor gave us the wrong formula because here on Wikipedia it seems Wiki is saying something different:

http://en.wikipedia.org/wiki/Ripple_...-domain_ripple

I'm beginner in this stuff so please your reply simple. Thanks

I did an experiment on full wave rectification using center tap transformer. The transformer read: Input 220V, Output 12V, 12V. I used two diodes and 1 micro farad capacitor. As you see capacitor's capacitance is very little so it didn't effect the overall output because I checked the output without using it and there was not much difference. The peaks had amplitude of 18V. I connected oscilloscope across the resistor. Have a look on the the given diagram:

__http://img233.imageshack.us/img233/4901/cttfullwaverectificatio.jpg__RMS vs. Peak

RMS = peak / √2

12 ~= 18/√2

Which means my output was correct. Because the transformer had 12V across each of its secondaries.

I used the formula, ripple factor=IL/FC. IL was almost 12.09 mA. I used the value of F as 60 Hz which was the frequency of AC source and the voltage of AC was 220V.

I think the instructor gave us the wrong formula because here on Wikipedia it seems Wiki is saying something different:

http://en.wikipedia.org/wiki/Ripple_...-domain_ripple

**What do you say, what is the real error?**Please help me with this. Thanks.
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