Explanation
In positive half cycle one diode is in forward biasing and other is in reverse biasing while in negative half cycle their polarity reverses and direction of current is opposite through R for positive and negative half cycles, so out put is nor rectified.
Since, R1 and R2 are different hence the peaks during positive half and negative half of the input signal will be different.
With rise in temperature, resistivity of semiconductors decreases exponentially.
Potential across the PN junction varies symmetrically linear, having P side negative and N side positive.
In the positive half cycle of input ac signal diode D1 is forward biased and D2 is reverse biased, so in the output voltage signal, A and C are due to D1. In negative half cycle of input ac signal D2 conducts, hence output signals B and D are due to D2.
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