a driven RLC circuit Analogy between circuits and simple harmonic motion: Circuits Mechanical Oscillations. No energy dissipation. LC Spring/mass (SHM) Oscillations with decreasing amplitude. Energy dissipation. RLC Spring/mass with damping Driven oscillations. Energy dissipation and supply RLC with AC generator Spring/mass with damping and driving force 14 October 2011 PHYS222 - Lecture 22 - Prof. Ruslan Prozorov - Iowa State University 2
Preview –Source: produces an oscillating voltage (supplies whatever current the rest of the circuit “requires”)–Resistor: causes a voltage drop when a current flows through. As soon as the voltage changes, so does the current alwaysin phase. –Capacitor: resists change in charge Qresists change in voltage. Voltage across capacitor lags behind the current by 90°. –Inductor: resists change in magnetic flux resists change in current. Voltage across inductor is ahead of the current by 90˚. ~ what does this mean? 14 October 2011 PHYS222 - Lecture 22 - Prof. Ruslan Prozorov - Iowa State University 3
has intentionally blurred sections.
Sign up to view the full version.