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Question : 23
Total: 27
(a) Describe briefly the function of the three segments of n − p − n
(b) Draw the circuit arrangement for studying the output characteristics ofn − p − n
OR
Draw the circuit diagram of a full wave rectifier and explain its working. As so, give the input and output waveform.
(b) Draw the circuit arrangement for studying the output characteristics of
OR
Draw the circuit diagram of a full wave rectifier and explain its working. As so, give the input and output waveform.
Solution:
(a) Functions of the three segments
(b) Circuit diagram for studying the output characteristics Obtaining output characteristics
(i) Emitter: supplies the large number of majority carriers for current flow through the transistor.
(ii) Base: Allows most of the majority charge carriers to go over to the collector.
Alternatively,
It is the very thin lightly doped central segment of the transistor.
(iii) Collector: collects a major portion of the majority charge carriers supplied by the emitter. (b)
The output characteristics are obtained by observing the variation ofI c V C E I B
OR
Circuit diagram of full wave rectifier
Working Principle
Input and Output wave form
The circuit diagram of a full wave rectifier is shown below.
Because of the center tap in the secondary of the transformer, diodes 1 and 2 get forward biased in successive halves of the input ac cycle. However the current through the load flows in the same direction in both the halves of the input ac cycle. We therefore, get a unidirectional (rectified) current through the load for the full cycle of the inputa c
The input and output wave forms are as shown below.
(b) Circuit diagram for studying the output characteristics Obtaining output characteristics
(i) Emitter: supplies the large number of majority carriers for current flow through the transistor.
(ii) Base: Allows most of the majority charge carriers to go over to the collector.
Alternatively,
It is the very thin lightly doped central segment of the transistor.
(iii) Collector: collects a major portion of the majority charge carriers supplied by the emitter. (b)
The output characteristics are obtained by observing the variation of
OR
Circuit diagram of full wave rectifier
Working Principle
Input and Output wave form
The circuit diagram of a full wave rectifier is shown below.
Because of the center tap in the secondary of the transformer, diodes 1 and 2 get forward biased in successive halves of the input ac cycle. However the current through the load flows in the same direction in both the halves of the input ac cycle. We therefore, get a unidirectional (rectified) current through the load for the full cycle of the input
The input and output wave forms are as shown below.
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