Hey guys,
Im doing a project for UNI and have to make a 3 stage amp for a microphone (Rout = 10k, open cct V of 1mV pk) that drives a 15Ω speaker. I have 3 amps to use, a NPN BJT, PNP BJT and a p channel JFET.
My problem is i have made a two stage amp with the two BJT's just connected together with the output amp being set up in the common emitter configuration, but i dont know where i should put the JFET, i can leave it out but i want to get a high gain and bandwidth from the amp. Would the JFET increase my gain?
Any suggestions? Ive seen on car head unit that it says MOSFET output and such but i don't know what would be the best configuration for 2 BJT's and a JFET.