Derive an expression for overall differential voltage gain


Response to the following problem:

A bipolar differential amplifier with emitter degeneration resistances Re and Re is fed with the arrangement shown in Figure. Derive an expression for the overall differential voltage gain Gv ≡ vod /vsig.

If Rsig is of such a value that vid = 0.5vsig, find the gain Gv in terms of RC, re, Re, and α. Now if β is doubled, by what factor does Gv increase?

73_amplifier with emitter.jpg

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Electrical Engineering: Derive an expression for overall differential voltage gain
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