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CBSE Class 12-science Answered

Output characteristics of an n-pn transistor in CE configuration is shown in the figure. Determine: (i) dynamic output resistance (ii) dc current gain and (iii) ac current gain at an operating point VCE = 10 V, when IB = 30 A.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer

Answered by | 04 Jun, 2014, 03:23: PM

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CBSE 12-science - Physics
How do we bias the junctions of a transistor in common emitter configuration?
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CBSE 12-science - Physics
What are Transistors?
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CBSE 12-science - Physics
A P-N transistor is used in common - emitter mode in an amplifier circuit. A change of 40μA in the base current brings a change of 2mA in collector current and 0.04V in base  -emitter  voltage, Find (i) input resistance (ii) current amplification factor β. If a load resistance of 6 k oh m is used, then find voltage gain?
Asked by Topperlearning User | 10 Jul, 2014, 10:25: AM
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CBSE 12-science - Physics
Draw a labeled circuit diagram of a common emitter transistor amplifier. Draw its input and the output characteristics. .
Asked by Topperlearning User | 23 Jun, 2014, 02:16: PM
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CBSE 12-science - Physics
A transistor has a current gain of 30. If the collector resistance is 6kΩ, input resistance is 1kΩ, calculate its voltage gain?
Asked by Topperlearning User | 14 Nov, 2014, 07:38: AM
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CBSE 12-science - Physics
The input resistance of a silicon transistor is Ω Its base current is changed by 15μ A, which results in the change in collector current by 2mA. This transistor is used as a common emitter amplifier with a load resistance of 5k Ω. Calculate current gain (βac) transconductance and voltage gain.
Asked by Topperlearning User | 10 Jul, 2014, 11:09: AM
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CBSE 12-science - Physics
The base of a transistor is lightly doped. Explain why?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Physics
In the given figure, is (i) The emitter (ii) collector forward or reverse biased? Justify.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Physics
Define current amplification factor in a common  emitter mode of transistor?
Asked by Topperlearning User | 23 Jun, 2014, 02:11: PM
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CBSE 12-science - Physics
Calculate emitter current for which β = 100 IB = 20μA?
Asked by Topperlearning User | 10 Jul, 2014, 01:13: PM
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