# Why does collector current increase with base current in BJT?

The base current in the BJT is due to the recombination of holes and electrons. To neutralize the p region an electron leaves the p region. If we take it the other way round, the larger the base current the greater is the recombination, so the collector current should reduce, but $$\\beta I_c/I_b\$$ . $$\I_c=\beta I_b\$$, which shows that $$\I_b\$$ is directly proportional to $$\I_c\$$.

• Ib = Ic/beta not betaxIc – cm64 Jul 29 '19 at 18:59
• And Ib is controlling the Ic NOT the other way around – cm64 Jul 29 '19 at 19:07
• The collector current is controlled by the voltage on the base - it is a side-effect that base-current flows and that the ratio of base to collector current is somewhat constant. – Kevin White Jul 29 '19 at 20:24
• Here, have a β and a ×. – Hearth Jul 30 '19 at 1:53