Question

Write down the relation between $\alpha$ and $\beta$ related to amplifier.

Answer 1

For a transistor,

$\alpha =\frac{I_c}{I_e}$

$\beta =\frac{I_c}{I_b}$

And using the relation,

$I_e=I_c+I_b$

we get the relation,

$\alpha =\frac{\beta }{\beta +1}$

$\beta =\frac{\alpha }{1-\alpha }$