Gain Definition and 401 Threads

The first part of this problem was to find the gain using an ideal OpAmp. I am on the second half of this homework problem, where we find Vout/Vin, aka Gain, using a non ideal OpAmp. The attachment is the picture of the circuit. I know that since the OpAmp is no longer ideal A no longer...

When a golf ball goes round the hole and doesn't drop (bit like an orbit), it often appears to leave the hole faster than it went in. My understanding of physics tell me that this is not possible, as any speed gained from gravity when it dips slightly into the hole, is lost when it gains height...

Water is being pumped into a tank on a ready mix concrete plant in Palm Springs CA Water is chilled to 45 degrees into a 18' x 3' tank with 1/4 inch steel walls. Depending on ambient air temperature, how long will the water take to warm from 45 degrees to 65 degrees. Is there a...

Hi, I have been looking into the phenomenon of Zitterbewegung which is a high frequency oscillatory motion of the electron that is predicted by the Dirac Equation for a free electron. One way of looking at this motion is that it is the interference of plane waves with positive and negative...

Light travels through a medium and its velocity is (assuming that the medium has an index refraction greater than 1) consequently slowed. Once the light passes through the medium, though, the velocity at which it travels accelerates back to the rate it had prior to entering the medium. How...

I doubt that the people who gained weight had actually looked at their options and decided that gaining weight would be the optimal course of action that would minimize uncertainty. If, so how can it be an "optimal response"? Isn't it more like an "irrational response"?

i am tring to use transistor tip 41c , and i want to calculate Ic ,,, knowing that ( Ic=B*Ib) but when i try to know BETA (B) from the data sheet of the transistor i found that it vary with the collector current (Ic) and the graph show the relation between (Ic) and beta in case Vce=4 volt...

Something is bothering me about passive systems in resonance. Consider the Bode plot of a second-order system, for example: http://en.wikipedia.org/wiki/File:Harmonic_oscillator_gain.svg Let's say we excite this system near its resonance, so the system has a gain > 1. I don't understand...

I am studying the design of an amplifier in common emitter configuration. I am studying from microelectronic circuits by sedra and smith. the author has described two terms for gain of a amplifier. one is the represented by Av and is called the voltage gain of that amplifier and the other is Gv...

Does anyone know what gain guiding and index guiding mean in the context of lasers?

if an unlimited source of water was dropped twenty meters directly downwards into a meter cubed steel box through a hose, would there be the same psi in the box as there would be twenty meters under the sea?

Why is voltage gain in db given by 20 Log (v2/v1) but power gain is straight forward : 10 Log (p2/p1).

I just graduated with my BS degrees in physics and applied math this December 2009. After taking a few mechanical engineering classes, I'm certain that I want to enter pursue a career in mechanical/aerospace engineering. I'm especially interested in working with aircraft, missiles, satellites...

NOTE- Images are thumbnails, click to enlarge Homework Statement Show that the positive feedback gain expression for the circuit below is v2/v0 = 1/[3 + j(wL/R - R/WL)] (anything in red I added to the original problem) Homework Equations (above)The Attempt at a Solution Along with the below...

I'm trying to figure out the currubt gain for a class ab push pull amp. I know that it's basically two emitter followers, so am I correct in assuming that the current gain is just Beta?

Homework Statement I need to find the DC and high frequency (HF) gain of this filter: http://www.flickr.com/photos/96575810@N00/4420162040/ (The url is [PLAIN][PLAIN]http://www.flickr.com/photos/96575810@N00/4420162040/ in case that doesn't work) Homework Equations The book defines...

[SIZE="2"]hi there i was wondering that why does not an electron or any other subatomic particle gains mass even when they are moving quite close to the speed of light like when beta particle is accelarated from a radioactive source it,s mass does not change why?

I used LM324N(4 opamps on 1 chip) from ON semiconductor to build an Instrumentation Amplifier circuit. I chose the values of the resistors so as to give a gain of 640. But when i checked the gain on the CRO the gain was around 175. What problem could this be? Datasheet...

Antenna Gain?? :confused:Hi all, I am really confused by the subject of antenna gain. I have no problem with the idea of the idea that an antennas performance should be related to how welll it focusses radiation relative to an isotropic emitter. Bus as this gives a figure greater than...

Homework Statement Transfer function: G(s) =\frac{k}{s^{2}+2\varsigma\omega_{n}s+\omega_{n}^{2}} a) if u(t) = cos(2t), find the steady state response b) determine the values for k, damping ratio (\varsigma), and the natural frequency. Homework Equations The Attempt at a Solution...

Could sb explain to me how to calculate the 3db frequency of the inverting op amp, please? 1. For non-inverting op amp If Bandwidth gain product is 1.5x10^6 Hz and gain is 20dB then the F3db is given by Bandwidth gain product over 20. It equals 150kHz. 2. For inverting op amp the F3db is...

Homework Statement If 10 kilogram of ice at zero degrees celsius is added to 20 kilogram of steam at 100 degrees celsius, what is the temperature of the resulting mixture?Homework Equations uhm... perhaps how many solutions are required to arrive at the answer?The Attempt at a Solution I and...

The following thought experiment describes the energy gain of a system that defies a classical explanation. In this experiment we assume no friction and all velocities are at sub-relativistic speeds, hence, Newtonian mechanics applies and Galilean transformation is adequate. Suppose we...

This question was asked by a friend recently, and I couldn't give an answer! To an observer on the Earth, when anything falls towards a black hole, it never actually crosses the event horizon. Therefore, from our observational point of view, how do black holes gain mass? As time goes by, all...

Hi everyone. Little bit of my background: Im currently studying mathematics in the third year at university (or maybe you call it college in your country), and I have two more years left. I feel that I have affinity for physics and maths, and it is something I really want to master. My...

A spring has an unstretched length of 0.650 and a weight of 0.400kg is attached and gently lowered till eqm point is reached. The spring is then stretched by a distance of 0.200m. Loss in gpe=mgh=0.200x0.650x9.81=0.785 J Gain in EPE=0.5 Fx= 0.5 x 0.400x 9.81 x 0.200=0.392 (?) Actually I...

In a fusion reaction, the nuclei of two atoms join to form a single atom of a different element. In such a reaction, a fraction of the rest energy of the original atoms is converted to kinetic energy of the reaction products. A fusion reaction that occurs in the Sun converts hydrogen to helium...

I'm having problems filtering out certain frequencies from others with a series LC filter. I have a 1.923 Henry DC filter choke inductor set in series with a 0.1 micro Farad capacitor. I send the signal through the inductor to the capacitor and output from the other side of the capacitor. I'm...

guys I'm making this color sensor.i have used 2 RED LEDs as both sensor and emitter. I have used TL084 op amp in infinite gain mode because Sensor LED generates very small voltage. my problem is op amp is too sensitive so it reacts when i tough circuit or negative wire (some times even my...

If anyone know pls tell me in Gain bandwidth product, gain in what manner (dB or voltage gain (Vo/Vi)) ?

If anyone know pls tell me in Gain bandwidth product, gain in what manner (dB or voltage gain (Vo/Vi)) ?

[FONT="Century Gothic"]Can you explain the yellow highlighted portions (the derivation part)? How do we get to know which voltages to subtract? Is there also a good link which provides a good explanation of negative feedback mechanism? Correction: (V2 in fig 18.28 is actually Vin)...

Homework Statement What will the effect of LOAD resistance of the GAIN of a n channel JFET ??

\left \begin{array} \mbox{F=ma} \\ \mbox{m=\frac{m_{0},\sqrt{1- \frac{v^2,c^2}}}} \right\{ \Rightarrow F=\frac{m_{0} a,\sqrt{1- \frac{v^2,c^2}}} Is the above computation a right way to gain formulas in physics and is the gained formula from above computation a right one? thanks alot

i don't see how this makes any sense at all. http://www.time.com/time/health/article/0,8599,1914857,00.html

Hi folks - I'm trying to follow along in a textbook the derivation of the common-base current gain equation, and I'm having a bit of trouble. The common base current gain is supposed to be approximately \alpha, where \alpha = \frac{\beta}{\beta+1}. Doing a nodal analysis with the signal applied...

Homework Statement I'm given a closed loop transfer function with a gain, K=1 and a plant H(s). I need to find the gain margin of the system. Homework Equations I know how to solve this problem: a) I find the frequency where the phase is -180 degrees. b) I find the gain at that...

static current gain of BJT? to increase the static current gain of a BJT what should i do ?//////// 1.base is made thin and heavily doped 2. collector is made thick and heavily doped 3.base is made thin and lightly doped 4.emitter is made thin and heavily doped its an MCq...

ok I'm beginning to read a bit of kant... so what i understand is that we can only GAIN KNOWLEDGE by using concepts and applying it to experiences. it goes to say that we can not know god in this case because we can never experience god? a question someone asked me when i was discussing...

Hi all, Does the antenna gain depend on the angle of the emerging ray? or It can be a single number for all ray emerging in all directions? I know the gain is the amount of power an antenna has relative to an isotropic antenna. Sometimes it means the maximum power an antenna can have relative...

I am learning about Butterworth filters right now, so we are also learning about frequency scaling. To find the new transfer function after you frequency scale something by Kf, you simply divide all 's' by Kf. I am doing a homework problem where you have to find the new location of the poles...

Hi, My name is raju and I am from India. I am in my first year of Degree doing Electronics and Electrical Engineering. I am having a bit of problem with this circuit I am attaching the circuit diagram. Can anyone please tell me what is the gain of the amplifier and how can I found it...

To those who see Israel as an agressor in the ongoing fighting in their region of the world, I ask a straightforward question: What does Israel seek to gain via their continued fighting? Expanding: if the fighting stopped now and Hamas permanently ceased the launching of rockets and...

Post your regrets in life so that other users may gain wisdom from them and not follow your path (if applicable). I'm only in my early 20s so my list is not as full, but here goes. I regret not studying more in my younger years, I was much more interested in video games and popular music. I...

One of the question asks to find the frequency at which the gain becomes 0dB for a low pass Single Time Constant circuit. In the solution manual after finding the 3dB frequency = 10^6, it states that since the gain falls off at a rate of -20dB/dec (see attatchment for graph) starting at...

Hi, Why for arbitrary high input power the gain saturates in EDFA (erbium-doped fiber amplifer)?

Not a homework question, but I was curious because problems in class assumed the object gained electrons versus losing them. Why can't it be the other way around?

Hello, I am trying to understand how this graph http://en.wikipedia.org/wiki/File:Bandwidth_2.svg gets plotted. My goal is to write a small program that takes the center frequency/bandwidth and a (cut/boost) gain values and plot the curve. I initially assumed, all I needed to find was an...

how does one calculate a gain in signal e.g sine wave. do we take peak-to-peak (or peak) of the output divided by peak-to-peak(or peak) of the input?

Over the holiday season I only ate poorly and didn't due my regular exercise for about 8 days. I managed to gain roughly 7 pounds or about a pound per day. It is amazing how fast fat can accumulate on my body yet it can be so hard to get rid of. I even went down about 10 pounds on my usually...