Circuits knowledge required for physical electronics? I'm planning to study physical electronics and device/semiconductor physics in grad school. My relevant undergrad physics classes consisted of quantum mechanics, statistical mechanics, electromagnetism, circuits, experimental physics, and solid state physics. I also took some electives in electrical engineering and materials science. I have knowledge of basic semiconductor circuits with little design experience. Would it be beneficial for me to take more circuitry classes to prepare me for graduate school? Or is what I've done enough preparation?