Gain Definition and 417 Threads

Hi, I have a problem I am trying to work out on simple Op Amps gain, and I am having trouble trying to prove what the gain is. I know what the gain is supposed to be (see below), but I am stumped as to how to actually go about proving it. When I try to setup the Kirchoff node equations I get...

I need help with the two questions below please because i just don't understand it !1 Questions 1. A signal processing system consists of a preamplifier, an amplifier and a filter connected in series. At a given frequency the preamplifier and the amplifier have gains of 12 dB and 31 dB...

Wow, just found this great little link that gives an awesome perspective on the scale of things. Just thought I would share: http://www.pbs.org/wgbh/nova/elegant/scale.html

Can someone please explain what exactly the gain curve of a laser is? Is it exactly the same thing as the natural linewidth of the laser [a graph of intensity vs frequency] or am I off track? I found this graphhttp://www.phys.ksu.edu/perg/vqm/laserweb/Ch-5/C5s1p5.htm that tries to explain...

Came across another question during my exam review. Seems to me like there is insufficient data again. When the space shuttle delivers a crew to the international space station, it usually boosts the orbit of the station from about 320 km to 350 km. How much energy does the shuttle add to the...

Hi, I'm having difficulty understanding how the gain of an antenna works. I appreciate that the gain effectively concentrates the available RF energy into a narrower beam but i can't fathom how this seems to mean that if i have a transmitter transmitting at say 100dBm that i can use antenna...

Greetings! I posted a few weeks ago about the preamp for the tape head I'm working on. I solved for all of my resistors and capacitor to get the right frequency response, and below is the theoretical frequency response, followed by what I actually get...

urgent help needed Can anyone tell me what purpose unity gain buffer amplifiers serve and why do you connect 2 low pass filters of same corner frequency by cascading them using one of these op amp buffers and not directly together. Also can you show me the diagram of this and where the...

I have been looking for info on the physical basis for this antenna equation : Gain = 4 * Pi * (Effective Area ) / Wavelength^2 I have found some tutorials that say it is based on reciprocity, and more specifically, on thermodynamic balance between a resistive load connected to an antenna...

I am supposed to calculate the gain of the circuit given in the attachment. I have attached it in a word file. Z is the generic term for the effective resistance. I get that Z is Z = [jwL +(R/jwC)]/(R+1/jwC) Can someone tell me if this is correct? Also, now for the gain, it is...

This was a very interesting article on sleep http://health.yahoo.com/health/centers/sleep_disorders/_101.html

Hi, I've asked someone to make me a parabolic mirror for a robot and they want to know the 'mirror gain' i would like. Does anybody know what 'mirror gain' is? thanks

What would the suggested effect from the results of this experiment on the predictions for the end of the universe, especially if it was a 'cold death'. The people doing the experiment mentioned that the state of cesium used existed at a near absolute zero temperature. In an older universe...

can the water (100 oC) gain latent heat energy from the same temperature object?

I need to know whether to invest in a new lighter axel for a go kart Before I take the plunge, I'd like to get "some" kind of idea of the kinds of gains one can expect from this kind of change. The conditions as I know Them. the 5Hp engine achieves max torque at 5200-5400 RPM...

One form of the Uncertainty Principle is given by \Delta p \Delta q \geq h where \Delta p is the change in momentum and \Delta q is the change in position and h is Planck's constant. If both side of the inequality is raise to the power n, does the new inequality expresses more certainty...

is it possable for soemone to do something without any persnal gain? I think no...but then agian i think a lot of abstract things... DONT BOTHER READIGN THIS IT JUST RAMBLES AND I AM TIRED SO IT PRABLY WONT MAKE MUCH SENES: i dotn buy that good person who selflessly helps others its a...