- Joined Jan 21, 2019
Just ordered all the parts for a discrete 741 build for my final project. Using 0805 and SOT23 transistors 3906 and 3904. To keep it simple I will not be using bigger transistors for output stage. Hopefully the transistors will match pretty closely for the current mirrors (Since they are on reels my changes are good). So then I realize it won’t be any good without a demo circuit to show the operations. Thinking simple and perhaps an integrator to change waveforms which will parallel with an actual 741 dip doing the same thing with input and output showing on a oscilloscope. I’m having fun with the project if you guys have any suggestions or hints please feel free to share. Next semester is mostly opamps and this will get me started and ready. I will document and update the post with my build. Still playing with design ideas: build a large representation on the silicon die using discrete components... or build a small board with 8DIP pins so it can be drop in replaced with an actual IC.... will only do one version.