November 2007
Intermediate to advanced
736 pages
46h 32m
English
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MAGNETIC PICKUP HEADS
Magnetic pickup heads (moving-iron and moving-coil) have basically constant velocity characteristic, the output voltage being proportional to the velocity of vibration of the pickup stylus (measured at its equilibrium position). Output voltages which are quoted for comparing magnetic pickup heads should therefore be given with reference to stylus velocity. This reference can be made directly by quoting the velocity; alternatively the ratio (expressed in decibels) of the actual output voltage to that which would be obtained at some standard velocity (1 cm/s) should be given. Hence, an output voltage could be given as, say, 100 mV at 3.16 cm/s or 100 mV at +10 dB, and both expressions would be equivalent.
Moving-iron magnetic ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.