Recent content by math&science

I know the output voltage for a difference amp is (R2/R1)(V2-V1) but how do you find the output voltage when you connect the circuit attached to the difference amp where V1 and V2 are the input voltages to the difference amp?

I'm at a loss as to how there is an output voltage for this circuit when I think the diode is facing in the wrong direction. Or is it possible to get an output voltage? Can someone help me analyze it. Just assume resistance is R and current through resistor is I and voltage drop across diode...

Just have a question about the dirac delta function. I understand how you would write it if you want to shift it but how would you scale it assuming we are using discrete time. Would you write 2*diracdelta[n] or diracdelta[2n]. Also, would that increase it or reduce it by 2 meaning that...

Thanks Berkeman. I get it now:)

Thanks Berkeman and Ranger. I guess I'm still a bit confused. When you make the truth table for all possible states, are you just multiplying ABCD to find the output. Aren't there a whole bunch of ways like A+B+C+D, etc. to get an output so how am I supposed to know which one to use to find...

Please refer to attached. Can someone please explain to me how they got the Boolean expression. I understand how to use Karnaugh maps but how did they come up with the equation in order to make the Karnaugh map? Thanks!

Is the x-axis of a Bode plot supposed to be angular frequency omega or just the frequency f? The y-axis is in dB. Thanks!

oh thank you so much berkeman! i guess it's not infinite but too large to measure here. thank you!

Oh, I see what you're saying. I used an LF411. I guess my question was more of a theoretical one. Would it be infinity theoretically for both types?

but i was using a 411 amplifier and not transistors

are the input impedances for both inverting and non-inverting amplifiers infinity?

Oh thank you! I got around 8 V but then someone told me it should be a really small number and so I got confused. Thank you for clarifying. One more question, if you have an input but took out the 15microF capacitor, is it possible to increase the gain in any way? I know that if you take out...

I have the amplifier in the attached file and I measured Vout without any input and got a really big number. Should it be really big or really small? I mean theoretically, what should it be equal to because I'm not sure that my answer makes any sense. Thanks!

Thank you so much. I've never even heard about the signum function before until now. How would I go about taking higher order derivatives of the signum function like the second and third, etc. How does that work?

Thanks, but what does sgn stand for? Is the derivative just -sin(x)*Abs(cos(x))'?