Welcome Future Engineers!
To a student friendly blogging community. To be a part of our growing community please join our mailing list. We will keep you informed about upcoming projects and useful information.
The 741 Op Amp is a common general purpose operational amplifier. As a school project I was given an assignment to build the inside of the 741 using NPN & PNP transistors. Well the 741 has a plethora of information informing one on how this amplifier works in detail with transistors. So I looked up the datasheet for the 741 and saw that it offered a very simple schematic diagram.
I thought I'd try my luck and mimic the diagram onto a sheet of acrylic for pure visualization. I had a good bit of cooper tape, a Dremel & ambition. My concern however, was would the acrylic be able to withstand the heat from the soldering iron? After hours of laying cooper tape and making an extra layer of solder atop of the traces the circuit was a success. *There was minor melting in some spots.
In the pictures above you can see the completion of the 741 Op Amp circuit and the output after I connected it to an
oscilloscope. This is without the filter of a capacitor and resistors. I suspect the circuit would have a much better gain with the ladder.
Thanks for reading!