[TCML] Terry Filter Resistors
bartb at classictesla.com
Thu Jan 29 20:38:30 MST 2009
Hi Ed, Gary,
WOW! I think your right. That sure puts a damper on my multi-layer
technique! Would work in multilayer mode, but if a 1K 1/2W carbon is
measuring 184mH, then yes, all bets are off and a good lesson learned
with the 27XT (and maybe any LCR).
Excellent test Gary!
Ed Phillips wrote:
> I also have a 27XT multimeter. If I take a 1.0K Ohm, 1/2W carbon comp
> resistor (i.e. NO significant inductance) and try to measure its
> inductance with this meter, it reads 184mH. I don't think so!
> Bottom line - don't try to measure inductance of resistors with this
> Regards, Gary Lau
> MA, USA"
> Measuring any kind of coil with this type of meter is sort of a
> gamble unless you know what you're doing - the measurement technique
> is quite an indirect one. Works OK with reasonable coil Q but not at
> all suitable for measuring the inductance of a WW resistor. To do
> that I'd break one and try to figure out the number of turns and then
> calculate it. I don't think even a good impedance bridge would give
> useful results.
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