The output of the given circuit in Fig. 14.4.
A. would be zero at all times.
B. would be like a half wave rectifier with positive cycles in output.
C. would be like a half wave rectifier with negative cycles in output.
D. would be like that of a full wave rectifier.
When, the diode is forward biased during the positive half cycle, the resistance of the diode will be low, and therefore the current will flow through the branch of the diode without any obstruction i.e. the branch will be short-circuited and therefore the voltage at output will be zero.
However, during the negative half cycle the diode will be reverse biased and its resistance will be infinite and it will not conduct and in this case the voltage at the output will be the negative cycles.
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Consider a box with three terminals on top of it as shown in Fig.14.18 (a):
Three components namely, two germanium diodes and one resistor are connected across these three terminals in some arrangement.
A student performs an experiment in which any two of these three terminals are connected in the circuit shown in Fig. 14.18 (b).
The student obtains graphs of current-voltage characteristics for unknown combination of components between the two terminals connected in the circuit.
The graphs are
(i) when A is positive and B is negative
(ii) when A is negative and B is positive
(iii) When B is negative and C is positive
(iv) When B is positive and C is negative
(v) When A is positive and C is negative
(vi) When A is negative and C is positive
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