User:Constant314

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pictures[edit]

TDR[edit]

Simple TDR made from lab equipment.
Simple TDR made from lab equipment.
TDR trace of a transmission line with an open termination.
TDR trace of a transmission line with a short circuit termination.
TDR trace of a transmission line with a capacitor termination.
TDR trace of a transmission line with an ideal termination.
TDR trace of a transmission line with termination on an oscilloscope input.

Two Ports[edit]

Two port double source balanced.
Two port single source balanced.
Two port double source unbalanced.
Two port single source unbalanced.

Pads[edit]

Two port to pi pad.
Converstion between Pi pad and Tee pad.
Pi pads and O pads
Pi pad and L-pad between different impedances.
Pi pad between different impedances.

Equivalent Circuits of Transmission Lines[edit]


Coaxial transmission line.
Signal flow gtraph for a two ended transmision line.
Equivalent circuit of a transmission line described by the Telegrapher's equations.
Solutions of the Telegrapher's Equations as Components in the Equivalent Circuit of a Balanced Transmission Line Two-Port Implementation.


Representations of E&M Plane Waves[edit]

Plane Wave Oblique View.jpg
Plane Wave Side View.jpg
Plane Wave Top View.jpg

http://groups.google.com/group/sci.physics/browse_frm/thread/ab9e9181deca125f/ccd9181e9cf6bb84?hl=en&tvc=1&q=sci.physics.*++rbmccammon#ccd9181e9cf6bb84

One of the best usenet discussions on Poynting vector and wires and angular momentum. Some day I'm going to write it up as a dialog between the Tortoise, Achilles and some other characters.

Total B Field Confinement by Toroidal Inductors[edit]

Fig. 1. Definition of the coordinate system.
Fig. 2. An axially symmetric toroidal inductor with no circumferential current.


Fig. 3. Toroidal inductor with circumferential current


Fig. 4. Circumferential current countered with a return wire. The wire is white and runs between the outer rim of the inductor and the outer portion of the winding.
Fig. 5. Circumferential current countered with a return winding.
Fig. 6. Circumferential current countered with a split return winding.

E Field in the Plane of the Toroid[edit]

Fig. 7. Simple toroid and the E-field produced. +/- 100 Volt excitation assumed.
Fig. 8. Voltage distribtion with return winding. +/- 100 Volt excitation assumed.

Toroidal Transformer Presentation[edit]



Isolation Transformer Presentation[edit]

A simple 1:1 isolation transformer without any special features.
A simple 1:1 isolation transformer with an extra dielectric barrier between primary and secondary.
A simple 1:1 isolation transformer with an extra dielectric barrier and an electrostatic shield between primary and secondary.
A 1:1 isolation transformer with primary and secondary wound on a split bobbin.
A 1:1 isolation transformer with primary and secondary wound on separate bobbins.



Magnetic Vector Potential of a Toroid[edit]

Fig. 3. Toroidal inductor with circumferential current
Fig. 2. Toroidal inductor with circumferential current
Fig. 2. Toroidal inductor with circumferential current