Notesale: Turn your study into money

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Rectieer
Almost all electeronic ciercuits need DC voltage foer theier woerking
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se of a dery cell is peractcable only in poertable electeronic ciercuits such as teransistoer
eradio, tape erecoerdeers etc
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bateeries will not only be veery expensive but also be voluminous
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This technique is not only convenient but also takes veery small space compaered to bateery
packs
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Types of Rectieer
1
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Full wave erectieer
3
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Half wave erectieer
The simplest foerm of AC to DC conveerteer is obtained by using one diode
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At the secondaery of the teransfoermeer, aceross
teerminals P & Q, when seen on a CRO, the electeric signal is a sinusoidal wave with its
peak value of VP and a ferequency deteermined by the erate at which the alteernatons (ve
to –ve) aere taking place
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If the voltage aceross P and Q is measuered using an AC voltmeteer, the voltmeteer shows

the erms eroot mean squaere) value, Verms of the sinusoidal wave which will be less than
the peak value
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707
Vpeak
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707 peak 2 V erms = = erms
When this sinusoidal signal is applied aceross the diode D
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This perocess erepeats
again and again thus peroducing a pulsatng (ve wave foerm at the output aceross the load,



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