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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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