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Re: Calculating inductance...
On Fri, 17 May 1996, Tesla List wrote:
> Z is AC current? (as in V = IR)
Z is the complex impedence or reactance - the analog of resistance for
inductors and capacitors. The impedence of a inductor or capacitor is
frequency dependent.
For an inductor, Z = 2*pi*f*L as mentioned, f = frequence in Hz, L =
inductance in H. For a capacitor, Z = 1/(2 * pi * f * C) where f = Hz as
before and C = capacitance in F. Just like a resistor, V = I*Z
> What is a sense resistor? Just a resistor of a known value?
Yes, so you know R and measure V to calculate I = V/R.
> I'll try it this weekend, and if I don't get a reply, I'll try it with the
> assumptions above. However, my volt meter is suspect, so I'll try
> to get it to read some roughly known values accurately.
Unless it's a VTVM, your meter will probably not read accurately at
frequencies in the kHz and higher range. It's more accurate to use your
scope to check the voltages.
Steve Roys.