Recent content by raybuzz

Thank you yenchin, I now understood it. Vinay

Hi all, I was reading One two three to infinity book, In pg62, fig 23 the author describes a donkey going around a mobius strip in a 2 dim world. He says that when it comes back to the original position the donkey gets inverted (i.e. heads down, legs up). However when I tried it...

Ok, say the energy is .5CV^2 Then the energy required to separate it is .5CV^2. From the law of conservation of energy this energy is converted to another form. I want to know if it is infact stored as electrical energy in the two charged plates. There doesn't seem to be a way in which we...

Hi all, If i have a charged plate of charge Q coulumbs, then what is the energy contained in it? Is the energy independent of the way in which i managed to get a single plate of Q columbs charge? In the sense , suppose in the beginning there were two plates of charge +Q, -Q columbs...

Hi everyone, In a light bulb, as we increase the temperature of the light bulb, the colour produced by the light bulb changes from red to blue ( intensity vs frequency curve shifts to the left). But if i want to have a red bulb with higher intensity ( i.e. brighter red) without...

also what are you doing by taking the laplace transform? is the laplace transform similar to taking logarithms and solving multi/div problems by simply adding/ sub the logarithms? are there any limitations of laplace?

hi everyone, I have recently started studying abvout control engineering, but am not getting a grasp on the basic idea behind controls. All the textbooks say that the output should track the input ideally , but why is it so? i.e if i give a step input to a system, the response should ideally...

Why does the opamp reach equlibrium on the differential voltage reaching 0? can you explain in terms of the internal structure of opamps, being made of controlled voltage or controlled current sources?

hi everyone, I am having a tough time convincing myself about the virtual short concept in opamps, As i understand from texts, on the application of a voltage on one of the input terminals of opamp, the voltage at the other input terminal is also forced to match the voltage on the first...

But in a radio, won't the delayed and present signal interfere, and superpose to give a new signal?

hi everyone, while doing a project on ultrasonic distance measurement, i came across the phenomenon of ghost echoes. The ultrasonic waves are emitted and made to reflect on a surface( of which the distance to the source is to be found). This reflected waves are detected, and time for b/w the...

I think it is to have a large input impedance. If the bias resistors used are say R1, R2, say in voltager divider bias, then the input impedence = (R1// R2// Rin), where Rin is the impedance of the active device. So if either R1, R2, are small, then the input impedance of the amplifier reduces...

But consider a JFET amplifier , in any bias configuration. The input is applied at the gate , which has an large resistance Rg of the order of 1Mohm going to the ground (as good as an hanging pin). Though this may not be an digital circuit, won't the same static charge stuff, cause votage...

Ok. But why doesn't the same phenomenon affect circuits which are all connected, and no pin is left hanging. Say i am driving a transistor gate with a micro controller. The current sourced by the controller is low. So isn't there a good chance of static, E interfering with the digital circuitry?

Did this really happen with digital circuits? I have experienced similar problems with analog circuits, and always thought it was because by moving hand to PCB, we are adding capacitance to it, between the circuit and Earth ground. For example moving your hand over a radio receiver, will result...