[sdiy] TDA7052

[James Dunn]

Hi,

I've been playing around with a circuit for the HT8950 voice modulator 
chip, using a TDA7052 as an output amp. Basically, I've been playing 
around with feedback with a miniature mic and small speaker, and I've 
fried the TDA7052! I've built the circuit as shown on the datasheet with 
a 4.7k resistor to ground on the input and supply decoupling... how can 
I use this with feedback without frying the chip? Something like a 
current limiting resistor on the input? I also had a line out jack 
connected to the same output! :) Perhaps this wasn't a good idea... I do 
need a line out too though..

any suggestions?

James