Hi guys, I trying to amplify 10 millivolts into 1 or more volts I was wondering if anyone knew how to do that. I'm really in a rush so please resond quickly.
I've been searching online and can't find anything, I've also been testing with op amps. So I don't exactly have a circuit yet. Do any of you guys know a op amp circuit that I can use. If so Where would I put the ground for the output?
I'm just trying to amplify 10 millivolts to make it usable. So basically If it's ac it has to be 110 volts but if I do dc it has to be enough to charge a phone. Do you know what I mean?
On another website forum he wants to amplify 10mV to make 5VDC or 110V (AC?) to charge his phone.
A microphone produces 10mV. If it is amplified then its amplifier also needs a power supply that he did not think about.
Well if we can get God to talk into the mic it might produce enough output power to run a battery charger <chuckle>.
Seriously I'd like to find out where this 10mv is coming from too now. Of course it doesnt matter that much because 10mv is far too low to use for anything that has to be "powered" anyway. Hopefully there is more to it than that.
Power conversion is correct. But you need to understand that you cannot increase power by converting it. All you can do is change the voltage and current numbers. But the power (volts * amps) stays the same or, more accurately, you get less power out due to losses in the power conversion process.
A standard USB port is 5V @ 0.5 Amps or, 2.5 watts. If you want to create that same power from a 10 mV source, you will need over 250 amps at the input.
And if you want to minimize losses in the wiring (say keep them at 20%), you are only allowed 2 cm of a very thick #4/0 wire for all your connections in both directions