These sample circuits can be accessed from the Circuits menu in the circuit simulator app developed by Paul Falstad.

o   LC Modes(2): Shows both modes of two coupled LC circuits.

o   Weak Coupling.

o   LC Modes(3): Shows all 3 modes of 3 coupled LC circuits.

o   LC Ladder: This circuit is a simple model of a transmission line. A pulse propagates down the length of the ladder like a wave. The resistor at the end has a value equal to the characteristic impedance of the ladder (determined by the ratio of L to C), which causes the wave to be absorbed. A larger resistance or an open circuit will cause the wave to be reflected; a smaller resistance or a short will cause the wave to be reflected negatively. See the Feynman Lectures 22-6, 7.

Magnetic Field Vectors

Prepared by Paul Falstad