Recent content by XuFyaN

here they are, http://s7.postimage.org/bprquwfuh/untitled.jpg http://s15.postimage.org/qshnzwfnt/Untitled.png are they visible now ?

I need help understanding how frequencies are distributed when taking the FFT of an Image and how can i determine those frequencies, I really need a detailed and easy tutorial with practical example to understand it. When we take the FFT of a Sine/Cos wave we can easily see its frequencies in...

In order to get my question , first read this please, So it means that when the sound is produced from nails on the chalkboard, the frequency range of this sound is between 2,000HZ to 4,000HZ with the amplitude of the sound is mostly a noise ? and human ears are designed to amplify this range...

The circuit is attached now, kindly have a look

Homework Statement What will be the transfer function in form of I2 / V1 of this circuit http://img813.imageshack.us/img813/198/6… 2. The attempt at a solution here is my coding but it shows incorrect answer, but after doing f=e/d it shows incorrect answer (the answer doesn't match with the...

can you please help about using diodes for squaring and square rooting ? what technique we use for squaring ? like if we Apply n volts the output must b n*n or simply sum of n times , like if we apply 5 volts the output must be 5+5+5+5+5

can opamp work this way ?? can opamp work this way ..? when i input 2volts the output is 4volts , when i input 5 volts the output is 25 volts in simple words can opamp takes the square of input signals ?? is it possible ? i know how it work as differentiator, integrator, Summing amp...

Homework Statement Solvinf the unit time step equation mathematically. Homework Equations x(t) = u(t+1) - 2u(t) + u(t-1) The Attempt at a Solution How can i solve this signal mathemtically :( and using plotted signals , i couldn't understand, here is my approach and I'm...

yes but why the voltage is in GigaVolts ?? it should be 0 ?? and it is under damping circuit

I have design this circuit from the book on the software "Electronic Work Bench" but see the 1st peak voltage in the attached image, why it is in Giga Volts ? the 1% of 1st peak voltage should be equal to the last peak voltage but this condition is not fulfilling here ...why ? i have...

the circuit is sensing the frequency radiation of mobile phone through C3 (as mentioned in report) actually C3 is acting as an antenna you said C3 is used as potential divider ? and capacitor C5 is connected across pin 8 and ‘null’ inputs (pin 1) of IC1 , i don't know the reason :S why it is...

my other thread is different from this thread, i read the datasheet of both ICs and understands the connections :)

in this circuit I've found out the function of every component except R4, R5 and C4,C7 and C8 ... can anybody please explain the purpose of R4, R5 and C4,C7 and C8 ? [PLAIN]http://www.2electronic.com/wp-content/uploads/2010/03/cellphone-detector.jpg also the Capacitor C5 (47pF) is connected...

thanks a lot...cirucuit is working now :)

connectiong IC in a circuit ?? I am working on a project , http://www.2electronic.com/wp-content/uploads/2010/03/cellphone-detector.jpg i have done everything right but nothing is happening when i am running this project on breadboard, i have connected IC in the same way as it is defined in...