circuits
Circuits and Electronics 3: Applications
edx.orgPrinciples of Electric Circuits | 电路原理
edx.orgIntegrated Circuits, Mosfets, OP-Amps and their Applications
onlinecourses.nptel.ac.inMicrowave Integrated Circuits
onlinecourses.nptel.ac.inCircuits and Electronics 2: Amplification, Speed, and Delay
edx.org