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

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

Crescent Reverb Phone with 20 MP Camera and 120 gb memory







here comes the concept phone with a 20 megapixel camera and lots of storage. This sounds like a good replacement for a DSLR and the design is nothing short of amazing. I’m talking about the Crescent Reverb phone render, done by Jonathan De Jesus and pictured below. it has beautiful chrome body and the ultraslim profile.

This model has a power button/toggle button at the top left hand corner, features a quad core processor, 120GB of internal memory, a display at the back, too and a main scratch resistant screen. Android jellybean is the OS chosen here, but android 5.0 is also an option and apparently you can switch between the two from the start screen. Everything else is based on wireless technology, from phone charging (via dock) to Bose Audio headphones used to listen to music, Bluetooth accessories and more.

When I see such a thin phone, that’s probably around 5mm or so in thickness, I’m worry it might break, as it seems so fragile… it has  chromed body is able to take enough pressure to make the Crescent Reverb a device that’s usable daily, even when pulled out of the pocket fast.
it is made out of material which is much lighter and stronger



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