Hi guys!
I want to design an audio amplifier. I have deigned the power amplifier with 20 W output to 4 ohm speaker. Now I should design a two stage microphone preamplifier with 20 V output and 50 mV (Overall gain=400) input operating between 20Hz and 20KHz. The DC power supply should have 30 V (VCC) because the same DC source should be used for both power and preamplifier circuits.
Can anybody help me?
Thank u!
I want to design an audio amplifier. I have deigned the power amplifier with 20 W output to 4 ohm speaker. Now I should design a two stage microphone preamplifier with 20 V output and 50 mV (Overall gain=400) input operating between 20Hz and 20KHz. The DC power supply should have 30 V (VCC) because the same DC source should be used for both power and preamplifier circuits.
Can anybody help me?
Thank u!