plsssssssss help
i'm designing a hearing aid with
lm356 as pre amplifier
lm386 as power amp and
la3607 as equalizer for frequency selection
made it on a pcb
circuit work bt have lot of hiss and noise
wht can i do
plssssssssss helpppp

 

What are you using for filtering?

If you post your schematic, you will get better help.

That way, we can SEE what is going on.

 

here are the pre amp and power amp diagrams both were taken frm internet
i have seen tht lm358 has lot of noise is there ny ic which i can replace lm358 .wit out changing cht circuit as i have already made the whole circuit
thnks

 

Ok...Lets stop using this thread and just stick with the other.. It will be too confusing.

 

hehe kk
lets do it