OUTPUT CHARACTERISTICS

Output Unit

Draw the output characteristic curve for a CE transistor circuit.

Draw the output characteristic curves of a n-p-n transistor in a C-E configuration and find the output resistance from it.

Output characteristic of n-p-n transistor in CE configuration is shown. From the characteristic curve determine the current gain at V_(CE)=1V -

Draw the typical input and output characteristics of an n-p-n transistor in CE configuration. Show how these characteristics can be used to determine (a) the input resistance ( r_(i)) and (b) current amplification factor (beta) .

Draw the diagram of the circuit arangement used for studying the 'input' and the 'output' characteristics of an n-p-n transistor inits CE configuration. Briefly explain how these two types of characteristics are obtained and draw these characteristics. (b) 'Define' the terms (i) Input resistance, (ii) Output resistance , (iii) Current amplification factor, for a given transistor.

In a transistor output characteristic commonly used in common-emitter configuration the base current I_(B) the collector current I_(C) and the collector -emitter voltage "V"_(CE) have values of the following orders of the magnitude in the active region

(a) Draw the circuit arrangement for studying the input and output characteristics of an n-p-n transistor in CE configuration . With the help of these characteristics define (i) input resistance , (ii) current amplification factor . (b) Describe briefly with the help of a circuit diagram how an n-p-n transistor is used to produce self-sustained oscillations .