Recent content by Abdulwahab Hajar

I see, thank you

Hello everyone I was hoping you could help me with something, in my analog electronics course.. In the diagram below, is displayed a circuit and its equivalent... I don't understand why the input resistance is only the parallel combination of R1 and R2?? Why doesn't Rsi contribute to the...

Got it sir, I forgot that the diode would determine the voltage drop Vo... Thank you!

The video was great thank you! Completely got it

I really can't see where this is going, a bit more insight would be highly appreciated... I mean a very high resistance would mean almost 0 current given that the voltage supply is constant... but that doesn't really get me anywhere.. Also sir, they said that the time constant is large... how...

Hello everyone, I hope you could help me with the analysis of this circuit. the output voltage is supposed to be similar to the input but shifted upwards by 20V, so basically it's between 0 and 40V... but why? I mean when the input is 20V, the diode is reverse biased... and the capacitor...

Got it, but how can I tell when it's an AC from a DC source

Homework Statement In the figure below find V(o) / V(s) Homework Equations In an opamp current doesn't enter through the inverting and non-inverting terminals, furthermore in DC conditions a capacitor acts like an open circuit The Attempt at a Solution The way I see it, both capacitors will...

never mind sir, I get it... very silly mistake thanks though

but isn't one of the terminals of the capacitor connected to the 12V source? while the other is just simply disconnected... shouldn't that incur a potential difference between the two plates

Homework Statement I would like to know the initial voltage across the capacitor terminals in the following diagram. Homework Equations when a capacitor is connected to a DC source for a long time, it acts an open circuit. The Attempt at a Solution for t < 0, we get the diagram below and I...

thank you, you were very helpful... loving the profile pic btw!

Homework Statement let's use this symbol to denote the unit impulse function δ When integrating the unit impulse function (from negative infinity to infinity) ∫δ(t) dt I know that this results in a value of 1 and is only nonzero at the point t = 0. However for example take this integral into...

true, it's limits are from -∞ to ∞ however, what is the range on which evaluated integral is nonzero... when 2T < t (is constant) < 3T if you check the picture I attached there are many intervals on which the integral is evaluated on the fourth interval 2T < t < 3T, when is the range on which...

Yes actually the relevant equation would be x(t) * h(t) = (from -∞ to +∞) ∫x(k)h(t - k)dk where K was used in this case instead of tau to avoid confusion... However as shown in the file attached there is more than one interval of integration... I need the limits of the fourth one where 2T < t < 3T