I am makeing a simple intercom from a microphone to a 8 ohm 20 watt speaker. All I want to do is talk into the microphone and hear it out the speaker.
I am using a 9 volt battery , the speaker , the microphone (condensor) , and some 20 gage wire. I know I need also a capacitor to transformer the DC to AC for the speaker.
Correct me if I am wrong
I believe since the speaker is 8ohm 20 watts. I need sqrt( 200 /8 ) = 5 amps to the speaker to have it operate.
I also need to transform the DC supply voltage to AC voltage to the speaker.
The problem is How do I bump up the current and what capacitor do I use with the microphone to produce the AC voltage to the speaker?
I am a little shake on how I would go about bumping up the current.
I know you can put a ton of batteries/capacitors in parrell .
But is their a better way other then using an amplifier chip or transistor's.
I want it to be the simplest thing.
I have tried a 9 volt battery with 2 old telephones and it worked fine Ofcourse Those speaker and microphone pair had a ampifier circuit made for bumping up the current and makeing the AC to the speaker ,...etc
Thanks for any help
I am using a 9 volt battery , the speaker , the microphone (condensor) , and some 20 gage wire. I know I need also a capacitor to transformer the DC to AC for the speaker.
Correct me if I am wrong
I believe since the speaker is 8ohm 20 watts. I need sqrt( 200 /8 ) = 5 amps to the speaker to have it operate.
I also need to transform the DC supply voltage to AC voltage to the speaker.
The problem is How do I bump up the current and what capacitor do I use with the microphone to produce the AC voltage to the speaker?
I am a little shake on how I would go about bumping up the current.
I know you can put a ton of batteries/capacitors in parrell .
But is their a better way other then using an amplifier chip or transistor's.
I want it to be the simplest thing.
I have tried a 9 volt battery with 2 old telephones and it worked fine Ofcourse Those speaker and microphone pair had a ampifier circuit made for bumping up the current and makeing the AC to the speaker ,...etc
Thanks for any help