lord loh. said:Although I have use the term "impedence matching" several times in the class as well as on the forum, I regret that I know very littel about it.
What is impedence matching ?
Why do it ?
What if we do not bother about it ?
How do I analyze impedence matching networks ?
Can anyone help me with these questions?
You have an output of one circuit that has a resistance of x, and the input of the other circuit has a resistance of y. x must equal y.lord loh. said:What is impedence matching ?
To me, if you are dealing with audio or RF electronics, it should be done to allow the signal to flow from one stage to the next with little or no modification.Why do it ?
then your circuit might not work properly.What if we do not bother about it ?
Use an ohmmeter.How do I analyze impedence matching networks ?
We just did ;-)Can anyone help me with these questions?
An ohmmeter will measure resistance, not impedance.mstechca said:Use an ohmmeter.How do I analyze impedence matching networks ?
Although an s.w.r. meter can be very useful they tell you only that there is a mismatch but give no information about it other than its magnitude, i.e. that the termination is so many times higher or lower than the line impedance. No indication of sign or angle.Sebi said:If You thinking about antenne-matching, build a simple SWR-meter like this.
lord loh. said:What is "s.w.r. meter" ?
Short wave radio ? I think not !
That's been answered.lord loh. said:What is "s.w.r. meter"..
A network analyser is an item of test equipment which measures and displays complex impedances. The display can be in the form of the Smith chart.And speaking of network analysers, I so fat thought that it only measured packet losses over computer networks. What is the output of a network analyser ? (I mean what is shown on it's screen ? The x axis and Y axis) ?
Ravi, you might be interested in this https://www.davidbridgen.com/dirpwr.htmRavi said:Hello Sebi I would appreciate it very much if you could kindly send me your SWR meter circuit as I am very much interested in building on for me.
Let's have your email address stevez.stevez said:David - would you explain how the circuit works. This design is similar to others I've seen in ARRL and other publications. I trust that it (and other designs) does what you say it does but I don't understand how you separate the forward power and reflected.
David Bridgen said:Let's have your email address stevez.
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