voltagedoubler_page2
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Voltage Doubler : Fig.32

       Circuit is  shown  in.  At the  peak  of  the  negative  half  cycle  D1  is  forward  based,  and  D2  is  reverse based.  This
       charges C1 to the peak voltage Vp with the polarity shown. At the peak of the positive half cycle D1 is reverse
       biased  and D2  is forward  biased.  Because  the  source  and  C 1  are  in  series, C2  will  change  toward  2  VP.  e.g.
       Capacitor voltage increases continuously and finally becomes 20V.
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voltagedoubler_page2
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fig. 32
During 0 to t1 negative D1contacts
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voltagedoubler_page2
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During t1 to t2, D2 becomes forward biased and conducts and at t2, Vi = 10V total voltage si 20V C1 = C2 = C
i.e both the capacitor charge to +10 V i.e. C1 voltage becomes 0.
t2 to t3 no conduction.

During t3 to t4 D1 contacts
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voltagedoubler_page2
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During t4 to t5 no conduction

During t5 to t6 D2 contacts
During t6 to t7 no conduction

During t7 to t8 D1 contacts
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voltagedoubler_page2
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During t8 to t9 no conduction

During t9 to t10 D2 contacts
and so on.
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