Question:
Both the diodes used in the circuit shown are assumed to be ideal and have negligible resistance when these are forward biased. Built in potential in each diode is $0.7 \mathrm{~V}$. For the input voltages shown in the figure, the voltage (in Volts) at point $\mathrm{A}$ is________
Solution:
(12) Right hand diode is reversed biased and left hand diode is forward biased.
Hence Voltage at 'A'
$V_{A}=12.7-0.7=12 \mathrm{volt}$
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