How do you build an amplifier with an input of 1 mV at 1000 Hz and an output of 1 V at 1000 Hz on a breadboard?

Answer 1

You would be hard pressed to accomplish this in a single stage amplifier. It's much easier with two.

For someone that hasn't done a whole lot of design, I would use two op amp stages to get there. the U741 op amp is a very common op amp, and is pretty cheap. For both stages you need to apply a +12 and -12 volt.

Here's the pin out for stage #1:

Tie 3 to your source

6 is your output. Connect a 100k ohm resistor from 6 to 2

Tie a 1k ohm resistor from 2 to ground.

And the second stage:

connect pin 6 of the first stage to 3 of the second

6 is your output. connect a 10k ohm resistor from 6 to 2

Tie a 1k ohm resistor from 2 to ground

Connect a 10 microFarad capacitor (12 volt minimim rated) from pin 6 to your output load. This will get rid of any DC offset, and the value does not necessarily have to be 10 microFarad, but the bigger, the better (usually).

This should have a pretty flat frequency response to ~3kHz. The first stage has a gain of ~100, the second has a gain of ~10. If you find the frequency response is poor, lowering the gain of the first stage and increasing the second will improve the frequency response. Replacing the 100k with a 50k will drop the first stage gain to ~50; replacing the 10k with a 22k will increase the second stage gain to ~20. This should have a frequency response that's fairly flat up to ~10kHz.

If you need an actual schematic, email me.