Recent content by Stupid_Ben

Are the cat5 cables twisted pair because it's cheap? or is it for their low impedance? I thought that 50 ohm coax was good choice for attenuation and usability at high frequency

I don't remember ever having seen shielded twisted pair... Anyway I'll have a look at the book you recommend next time I'm at work.

Hi f95toli, I think I agree with you on most things. However one 'but' that I think might be worth mentioning . For low frequency, the characteristic impedance of coax makes no difference, but it's shielding is much better than twisted pair. That's why we like to use it, also it radiates much...

Hi yungman, Thanks for the interesting comment, I can't say I every actually tried playing with big cables but it is interesting to know that you find it makes a difference. I think that the highs and low frequencies make the harmonics and resonances which makes a sounds "open up " . Though I...

Thanks Studiot I hadn't thought about that. I guess speakers need a fair amount of signal to get them to move! Hence the excuse behind the enormousness speaker wires audio buffs spend vast sums of money on.

Just out of interest I was wondering and couldn't work out... Why are (even high-end) speaker cables not coaxial? We always use a coaxial cable in the lab to get rid of the noise on our measurements. I figure that 50/75 ohm standard coax would create an impedance mismatch with the typically...

It depends on the type of diffraction you're doing, but on chapter three of the below book they do an example calculation. Introduction to X-Ray Powder Diffractometry [Hardcover] Ron Jenkins (Author), Robert Snyder (Author)