Understanding the Basics (and more) of Impedance Matching!
For more information on Impedance and our AC Ohm's Law Wheel with Z Impedance Formulas, (and unique resistor band color chart) please go to our Impedance Basics page.
Hello! We've spent hours scouring the web trying to find good content sites to help you in your studies and research, so I hope that you find these to be of use for you! We would appreciate you telling your friends and coworkers about our Ohm's law watches, clocks, decals, charts and our newest product - a beautiful 2" copper Ohm's law coin. We thank you!
Sandford Associates: **Recognized specialists in the TOTAL service and calibration of the HP4815A RF Vector Impedance Meter - restoring 4815A Probes and Main Frames to their original factory specifications.
Agilent Technologies: has an Interactive Impedance Matching Model on this web page. In this model, Smith Charts are used to visualize the interactive process of impedance matching. You can also play "The Impedance Matching Game" here.
D. Jefferies :The Smith Chart - what is it? What are main advantages of the Smith Chart? A note on the precision of the Smith Chart. Why is one circuit on the Smith Chart only half a wavelength?
BCAE1.com :This website is really fantastic. A great piece on Impedance Matching Transformers and there's a useful impedance calculator tool also.
http://www.smeter.net/feeding/t_tuner.php : FREE self-contained software for Impedance Transforming T-Networks - Antenna Tuner Applications. This program can be used to design antenna tuning and similar networks to cover given ranges of load resistance and reactance. It is usual for both capacitors to be continuously variable. The inductor L may be variable or band-switched.
ePanorama : This document tries to clear out some details of transmission lines and cable inductance. This document is only a brief introduction to those topics, but it covers issues such as "What are typical cable impedances?", "Why 50ohm coax?", "What happens if I use 50 ohm cable for video application which needs 75 ohm cable ?", "Impedance matching between different impedances".
D. Jefferies: Single Stub Matching of Transmission Lines to Loads. A Worked Example.
Dallas Semiconductor : Has a great article on "Impedance Matching and the Smith Chart: The Fundamentals". Type Impedance Matching in their search field when you get there...The Smith chart is still the basic tool for determining transmission-line impedances. The primary objectives of this article are to review the Smith chart's construction and background, and to summarize the practical ways it is used. Topics addressed include practical illustrations of parameters, such as finding matching network component values. Of course, matching for maximum power transfer is not the only thing we can do with Smith charts. They can also help the designer with such tasks as optimizing for the best noise figures, ensuring quality factor impact, and assessing stability analysis.
Impedance: Why not visit our other impedance page for more useful info?
THE ENGINEER SONG (Sung to the tune of the Beverly Hillibillies)
Come and listen to a story bout a man name Jed, A poor College Kid barely kept his family fed, But then one day he was talking to a recruiter, He said "They'll pay ya big bucks if ya work on a computer", Unix that is . . . CRT's . . . Workstations;
Well the first thing ya know ol' Jed's an Engineer, The kinfolk said "Jed move away from here", They said "Arizona is the place ya oughta be", So he bought some donuts and he moved to Ahwatukee, Intel that is . . . dry heat . . . no amusement parks;
On his first day at work they stuck him in cube, fed him more donuts and sat him at a tube, They said "Your project's late but we know just what to do, instead of 40 hours, we'll work you fifty-two!" OT that is . . . unpaid . . . Mandatory
The weeks rolled by and things were looking bad, some schedules slipped and some managers were mad, They called another meeting and decided on a fix, The answer was simple, "We'll work him sixty-six", tired that is . . . stressed out . . . no social life
Months turned into years and his hair was turning gray, Jed worked hard while his life slipped away, waiting to retire when he turned sixty-four, instead he got a call and they escorted him out the door, Laid-off that is . . . Debriefed . . . Unemployed . . .
You may not use our products as part of another product for resale, without the express consent of TechNote Time (TNT) Send inquiries to anne @ etgiftstore.com All Contents Copyright 2004-2015 Technote Time (dba TNT Electrical Trades Gift Store)