consider two circuits:
In circuit A the signal form mic AC (very low amplitude ) is combined with Vbb(to drive the BJT), as the two voltage sources are series they adds up and its amplitude increases and it is passed to bjt and then to loudspeaker.
in circuit B the signal form mic AC (very low...
I have three doubts in BJT:
1). in BJT Ie=Ib+Ic ; Ie-emitter current; Ib-base current; Ic-collector current
then i find in many circuits, collector current is given to load, if the emitter current is greater than the collector current, we can connect the emitter terminal to the load, to get...