Nov 22, 2009 #1 R rampat Member level 4 Joined Jun 27, 2007 Messages 69 Helped 4 Reputation 8 Reaction score 1 Trophy points 1,288 Location bangalore Activity points 1,756 opamp circuit problem Hi All Can someone please give me the equation and current through the resistor 100 Ohm in attached picture ? thanks
opamp circuit problem Hi All Can someone please give me the equation and current through the resistor 100 Ohm in attached picture ? thanks
Nov 22, 2009 #2 T tzg6sa Member level 2 Joined Jun 3, 2008 Messages 44 Helped 3 Reputation 6 Reaction score 3 Trophy points 1,288 Location Hungary Activity points 1,582 Re: opamp circuit problem The voltage on the right side of the 1Ohm resistor is -0.5V (0.5V-1A*1Ohm) . Thus trough the 4Ohm 0.125A is flowing. This implies that the opamp sinks 1.125A. Across the 100Ohm 112.5V is dropping. Easy, isn't it?
Re: opamp circuit problem The voltage on the right side of the 1Ohm resistor is -0.5V (0.5V-1A*1Ohm) . Thus trough the 4Ohm 0.125A is flowing. This implies that the opamp sinks 1.125A. Across the 100Ohm 112.5V is dropping. Easy, isn't it?
Nov 22, 2009 #3 atferrari Full Member level 4 Joined Jun 29, 2004 Messages 237 Helped 7 Reputation 14 Reaction score 3 Trophy points 1,298 Location Buenos Aires - Argentina Activity points 1,996 opamp circuit problem THe opamp sims to be sinking a LOT of current, eh?
Nov 22, 2009 #4 R rampat Member level 4 Joined Jun 27, 2007 Messages 69 Helped 4 Reputation 8 Reaction score 1 Trophy points 1,288 Location bangalore Activity points 1,756 Re: opamp circuit problem I think it will be ((0-(-0.5))/4+(0.5+0.5)/2+(0-(-0.5)/1)=1.625A of current will be flowing through 100Ohm resistor....
Re: opamp circuit problem I think it will be ((0-(-0.5))/4+(0.5+0.5)/2+(0-(-0.5)/1)=1.625A of current will be flowing through 100Ohm resistor....
Nov 23, 2009 #5 T tzg6sa Member level 2 Joined Jun 3, 2008 Messages 44 Helped 3 Reputation 6 Reaction score 3 Trophy points 1,288 Location Hungary Activity points 1,582 Re: opamp circuit problem 1.625A of course. I have missed a branch.