Amplification Definition and 78 Threads

Hello. When I short-circuit my power source/supply, I read 1.5 mA at 120+ VDC. For my purpose, the voltage is sufficient. However, I need to increase the amperage. I have been playing with amplifying the current using a transistor. However, my breadboarded attempts have all resulted in either...

Dear Experts, I am looking for some rf vhf diodes. could you recommend a particular model for me? I am quite new to this diode. Are these synonymously called microwave diode / MOSFET / rectifiers / field effect transistor? I am confused what should be the right diode to amplify gsm...

hi... after amplification of a signal through an amplifier, the amplified signal is 180 degrees out of phase with input..why?? thanks..

Hello, I have constructed a Faraday box containing electrodes that are going to detect the action potentials or/and local field potentials from inside the brain. I was wondering whether someone constructed something like this before and what strategies were used to reduce the noise...

Im studying basic electronics and transistor amplification is confusing me. Now I understand the basics of a npn\pnp transistor but here's what I don't get What I've read, says that the amplification occurs because the emitter base jn is forward biased and hence low resistance leading to a...

Homework Statement This is a problem I've been pondering, and I simply need some recommendations for texts to read on the topic. Suppose you have an enclosed air chamber with an acoustic source on one end (e.g.). How can one predict the amplification, distortion, and dissipation of the...

My home is about 1.2KM LOS from work. I want to use my work's internet connection at home. I have a pole available as well. Right now from rooftop to rooftop, I do get a signal but it's weak and goes off sometimes. I'm using a 200MW wifi bridge. So at a recommendation of a friend, I got a 1watt...

Homework Statement The amplification of an integrator is: A = Vout/Vin = -Zf/Zin = +j * 1/(ωRC) The amplification of an differentiator is: A = Vout/Vin = -Zf/Zin = -jωRC Although, that's what my book says. Not that I doubt it.. But really, what do Zf, Zin, j...

Will a primer designed for an exonic sequence anneal and sucessfully amplify a gDNA strand? I'm having trouble amplifying gDNA using that primer. cDNA with that primer amplifies perfectly. I have no problem amplifying gDNA using another primer that anneals to intronic sequences.

for a classical oscillator. i kno when resonance happens. what i don't know is WHAT happens in resonance. and WHY it happens. I am very sketchy bt the details...is resonance happening when the system is oriented or configured to b able to absorb max energy? why the amplification? could u...

I have somehow managed to learn unfaithful amplification from this book. http://books.google.co.in/books?id=CKTS6BzQqm8C&pg=PA226&dq=transistor+amplifier&lr=&ei=uBUtS_L2N6K-lASzxqmtAw&cd=6#v=onepage&q=transistor%20amplifier&f=false The book has very beautifully explained the...

Homework Statement A BJT has VA of 50 V and MOSFET has lambda(modulation length) = .02 V^-1, and has VGS-VTN=.5 What are the "amplification factors" of the 2 transistors. Homework Equations well, not sure, all i really want to know is what do they mean by amplification factors...

hello i have been having trouble working with bipolar transistor. i have been taking pulses that at less then 1us long and amplifying them with transistors. how ever if i have a bipolar transistor as part of my amplifier whether it is my inputs are as part of another stage the pulses always are...

Do opamps amplify lineary down to very low signals like a few microvolts, the OP-07 for eg. I have an LM324 in moving coil phono preamp and the + input in which the AC coupled signal is going to is also connected to the + supply(6v) thru a 100K resistor. Is this to bias the opamp input because...

Hi everyone, I been trying to modify a headphone amplifier that I have to make it better for my specific headphone response. The thing is that I am using multisim software to test before actually making the physical changes, the problem is that I don't know what tool to use to see if my circuit...

Hello everybody! I was studying stuff about transistor and i got stuck somewhere. In lecture they said that The common emitter is the more likely configuration used to amplify signals because it produces more power than other configurations. But when i tried to understand it clearly if found...

Hi there I am new to this forum but I am a regular contributor to the SOS maths forum. I am working my way through a book on Ordinary Differential Equations and this book defines the Amplification Ratio,M, of the system under the above motion as...

I may need to amplify a very small, momentary charge. - a pulse. I have little information about charge amplification and have limited access to more. What are some related search terms for amplifying charge? Do you have any suggestions for doing so?

hi, we say amplification µ=plate resis.(rp) x gm = δVp/δVg=plate voltage/grid voltage but I am confused where is the amplification taking place it is just that to maintain the same plate current we have to EXTERNALLY increase the plate voltage,δVp, in response to an decrease in grid...

What will happen to society when those who have the capital are allowed to "amplify" their own intelligence? First of all, if anyone denies that this will happen within 50 years, please feel free to state a reason. But what will happen to people like the members of physicsforum.com, who are...

-Light with higher frequencies has higher energy photons. Can the energy in light be increased by increased amplitude without increasing frequency? How can amplitude be increased without increasing frequency? - By photons traveling in phasae creating a constructive...

I'm reading as a science hobbyist this site: [crackpot link deleted] It has many hyper links so there is further reading and the theme is ecology, green energy, inventions and stuff. What makes me feel revolting is this: Did anyone ever heard, anywhere in any context of such a thing as...

Hello, How can I increase voltage and current from a function generator and still keep an accurate waveform? I want to provide AC power to an electromagnet but my function generator does not have the power to drive it. Any help will be greatly appreciated. Thanks

In "locus of amplification factor", what does the 'locus' represent? I am taking an applied class on complex variables and studying fractional linear transformations. I am given the amplificaton factor for a given circuit and asked to draw the "locus of the amplification factor." I can do...

Homework Statement http://www.geocities.com/zakcapriturbo/bourdon_diag02.jpg A pointer is connected to an arm that moves along a single axis via a pinion gear wheel and gear quadrant. A displacement of the arm (x) results in an angular movement of the pointer (X3). Knowns...

i rise 10 tons 10 m up by lowering ten tons 10 m down with a pulley i connect the weights with a weightless balance i use the oscillation of the balance to produce electricity with an electric motor, when the weights reach the initial altitude the process is repeated can anyone explain...

I am familiar with the idea of amplitude increases that can be produced by waves that are "in phase". I can imagine this easily with sound or water. I have 2 questions with regard to EM radiation: 1) Do the same principles apply with light/EM radiation? What does "in phase" mean on a...

Parametric "amplification" of energy on capacitors Hello. My last post was about how geometry affected potential and electric energy transfers. Some people send me interesting information about that, and I've been thinking about parametric power conversion. We usually relate E to a...