I have question about R L Mathematics
On 1/28/2014 1:03 PM, amdx wrote:
I have beads* on a coax and want to know the R and the L.
I have measured the R at 3.85MHz, It is 3,350 ohms.
I have also measured the phase shift, voltage leading
by 17ns. The period of 3.85Mhz is 260ns.
I want to calculate the impedance of the reactance.
Can anyone solve this for me?
I would like to see the math, because I want to measure again
at 7.5MHz.
My first step was to find the phase angle, 23.5*.
Do we agree there?
Thanks, Mikek
* it is actually a bit more than beads. Years ago, we were sent a box of
ferrite potcores, the cores arrived broken. I slide 42 broke halves onto
a piece of RG59, and now I'm measuring it.
I had a thought, I measured the R by dividing Voltage by Current.
So that means, my current was limited my the L also. The Total impedance
is 3,350 ohms, this includes R and L.
Mikek
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