Study guide for exam one (covering upto OP Amps )
Study guide for exam one (covering upto OP Amps ) EECE 260
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This 17 page Study Guide was uploaded by Syed Haque on Saturday February 27, 2016. The Study Guide belongs to EECE 260 at Binghamton University taught by Professor Klotzkin in Fall 2015. Since its upload, it has received 178 views. For similar materials see Electric Circuits in Electrical Engineering at Binghamton University.
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Date Created: 02/27/16
Voltage drop across a resistor is always positive. Power is always dissipated by a resistor. For loop problems, if the direction of current is given, draw the loops in that direction. Current flows from higher to lower voltage When current flows from + to – then power of the source is + (Power is said to be dissipated) When current flows from – to + then power of the source is – (Power is said to be supplied) A complete circuit is required for current flow. No breaks. Diodes and transistors are some examples of components that don’t follow Ohm’s law. Voltage across elements in parallel are equal Current across elements in series is equal For op amp problems, check for negative feedback. Establish V = V+ then do a node equation either at v or v+ depending on which one the negative feedback is connected to. If current is going into (I_0 = negative current) an op amp from the current output terminal then the op am is said to be sinking. If current is being supplied (I_0 is positive) by op amp then it is said to be sourcing. Non Inverting op amps draw current from sensors they are connected to. Inverting op amps do not draw current from sensors they are connected to, therefore can supply more current than noninverting op amps Inverting op amp formula : Vout/Vin = R2/R1 NonInverting op amp formula : Vout/Vin = 1+R2/R1 Vout/Vin is called “gain”
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