Hi, I a beginner . i found an image of circuit diagram from this link : https://www.instructables.com/DIY-BuckBoost-Converter-Flyback/#discuss
I dont understand the part around U1 - 7805? what the purpose of U1-7805 in this case ?
Furthermore, in the diagram there is 5 V source ,where is the 5 V source come from ? The author only say change 20 to 5V by using op amp but in here the 5V source not come from op amp.
Could you guy explain these for me ?
I dont understand the part around U1 - 7805? what the purpose of U1-7805 in this case ?
Furthermore, in the diagram there is 5 V source ,where is the 5 V source come from ? The author only say change 20 to 5V by using op amp but in here the 5V source not come from op amp.
Could you guy explain these for me ?