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High CMRR Instrumentation Amplifier (Schematic and Layout) design for biomedical applications

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Instrumentation amplifiers are intended to be used whenever acquisition of a useful signal is difficult. IA’s must have extremely high input impedances because source impedances may be high and/or unbalanced. bias and offset currents are low and relatively stable so that the source impedance need not be constant. Balanced differential inputs are provided so that the signal source may be referenced to any reasonable level independent of the IA output load reference. Common mode rejection, a measure of input balance, is very high so that noise pickup and ground drops, characteristic of remote sensor applications, are minimized.Care is taken to provide high, well characterized stability of critical parameters under varying conditions, such as changing temperatures and supply voltages. Finally, all components that are critical to the performance of the IA are internal to the device. The precision of an IA is provided at the expense of flexibility. By committing to the one specific task of
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Portal 2 PotatOS Science Kit

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What are some of the memories that you carry around from playing Portal 2? For some of us, it would be toting the PotatOS around the test facility, where you felt this unnatural bond as though you were kindred spirits, never mind that this is not the case.
Well, for folks who skipped the children’s Science Fair at Aperture Labs, here is something that might just redeem your absence – the $29.99 Portal 2 PotatOS Science Kit. Yes sir, just about everything that is required by you is packed into a handy Portal 2 PotatOS Science Kit, where it even sports a miniature science fair poster complete with brand new content from Valve’s writing team!
The only thing that you will need to come up with would be your very own potato, but that should not be too hard to get, right? If you’re great at following instructions, it will take mere minutes to transform your potato into your very own PotatOS, where it will light up and send verbal repartees your way, just like in the game. Nice to know that the CR2030 batteries required to run this thing is included. Just a note of caution – skip on eating the potato after using it for PotatOS.

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