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Q. Input bias current of operational amplifier?
When operated at extremely low quiescent current values, the base bias currents will be low; but they do have to be taken into consideration. The input bias current IB for an op amp is defined as the average of the two input currents with the inputs grounded, i.e.,
A typical value for a µA 741 is 80 nA; for a µA 771 it is 50 pA.When the resistance of the source feeding the op amp is large enough, the input bias current may have an adverse effect. As shown in Figure, where the noninverting input is grounded and the inverting input is connected to a source of 1-M resistance and of voltage vS momentarily at 0 V, the bias current of 80 nA generates a voltage of -80 mV on the noninverting input.
Q. Sinusoidal steady-state phasor analysis? The kind of response of a physical system in an applied excitation depends in general on the type of excitation, the elements in the
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1. The Excel file contains daily closes for the S&P/TSX composite index from January 2, 2008 to December 31, 2010. Assuming that December 31, 2010 is the current day. A) Using the
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PUSH Instruction This instruction copies the contents of the specified register pair into the stack. The contents of stack pointer register are decremented by two. Th
Q. A particular BJT has a nominal value of α 0.99. Calculate the nominal β.If α can easily change ±1%, compute the percentage changes that can occur in β.
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