i WANT TO kNOW ABOUT FREQUENCY GENERATOR IN DETAIL.?
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frequency generator is like tank circuit(lc circuit). it's main function is to regulate the energy stored in the inductance and capacitance. to know more you can read RESNICK HALLIDAY WALKER
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A function generator is a piece of electronic test equipment used to generate electrical waveforms. These waveforms can be either repetitive, or single-shot (once only) in which case some kind of triggering source is required (internal or external). The resultant waveforms can be injected into a device under test and analyzed as they progress through the device, confirming the proper operation of the device or pinpointing a fault in it.\n\nFunction generators usually generate a triangle waveform as their basic output. The triangle is generated by repeatedly charging and discharging a capacitor from a constant current source. This produces a linearly ascending or descending voltage ramp. As the output voltage reaches upper and lower limits, the charging and discharging is reversed, producing the linear triangle wave. By varying the current and the size of the capacitor, different frequencies may be obtained.
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The frequency is limited to the rotational speed of the generator.  A 2-pole 60Hz generator spins at 3600rpm, 4-pole at 1800rpm etc. 2-pole 50Hz at 3000rpm.\n\nIf the frequency is too low it won't drive the downstream transformers, too high and the impedance losses become unacceptably high.
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More info is needed. \n\nWhat is the pass band frequency, what is the spectral content of the input signal. Ideally how steep do you want it?
200277
Are you asking for the mathematical representation of a frequency modulated signal (FM)?  If so, it is:\n\nXc(t)=Ac*cos[omegaC*t + fDelta*X(t)]\n\nWhere t is time, Xc is the the modulated carrier, Ac is the amplitude of the carrier, omegaC is the frequency of the carrier (in radians per second), fDelta is the modulation index (amount of frequency change allowed), and X(t) is the message.\n\nSee chapter 5 of reference in "source(s)".
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go to http://ucp.ece.gatech.edu/content/3042/3042_WA2_fall03.pdf#search='pulse%20width%20modulator%20with%20555%20timer%20and%20LM311%20comparator\n\nor\nwww.colorado.edu/~ecn4618/lab2.pdf\n\nI hope this helps you somewhat.
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The frequency of the electrical system varies by country; most electric power is generated at either 50 or 60 Hz.  Some countries have a mixture of 50 Hz and 60 Hz supplies.\n\nVery early AC generating schemes used arbitrary frequencies based on convenience for steam engine, water turbine and generator design, since frequency was not critical for incandescent lighting loads. Frequencies between 16 2/3 Hz and 133 Hz were used on different systems, with lower frequencies favoured where loads were primarily composed of motors, and higher frequencies preferred to reduce lighting flicker. For example, the city of Coventry, England, in 1895 had a unique 87 Hz single-phase distribution system that was in use until 1906. Once induction motors became common, it was important to standardize frequency for compatibility with the customer's equipment. Standardizing on one frequency also, later, allowed interconnection of generating plants on a grid for economy and security of operation.\n\nIt is generally accepted that Nikola Tesla chose 60 hertz as the lowest frequency that would not cause street lighting to flicker visibly. The origin of the 50 hertz frequency used in other parts of the world is open to debate but seems likely to be a rounding off of 60 Hz to the 1-2-5-10 structure, called a set of preferred numbers, popular with metric standards.\n\nOther frequencies were somewhat common in the first half of the 20th century, and remain in use in isolated cases today, often tied to the 60 Hz system via a rotary converter or static inverter frequency changer. 25 Hz power was used in Ontario, Quebec, the northern USA, and for railway electrification. In the 1950s, much of this electrical system, from the generators right through to household appliances, was converted and standardised to 60 Hz. Some 25 Hz generators still exist at the Beck 1 and Rankine generating stations near Niagara Falls to provide power for large industrial customers who did not want to replace existing equipment; and some 25 Hz motors in New Orleans' floodwater pumps [1].\n\nA low frequency eases the design of low speed electric motors, particularly for hoisting, crushing and rolling applications, and commutator-type traction motors for applications such as railways, but also causes a noticeable flicker in incandescent lighting and objectionable flicker of fluorescent lamps. 16.7 Hz power (approx. 1/3 of the mains frequency) is still used in some European rail systems, such as in Austria, Germany, Norway, Sweden and Switzerland (until 1995 the frequency was 16.67 Hz).\n\nOff-shore, textile industry, marine, computer mainframe, aircraft, and spacecraft applications sometimes use 400 Hz, for benefits of reduced weight of apparatus or higher motor speeds.\n\nAC-powered appliances can give off a characteristic hum at the multiples of the frequencies of AC power that they use. Most countries have chosen their television standard to approximate their mains supply frequency. This helps prevent powerline hum and magnetic interference from causing visible beat frequencies in the displayed picture. Unless specified by the manufacturer to operate on either 50 or 60 Hz, appliances may not operate efficiently or even safely if used on other than the intended supply frequency.\n\nfind history of frequencies here:\nhttp://en.wikipedia.org/wiki/Mains_electricity\n\nhere is a map showing which countries use 50 hz and which ones use 60 hz\nhttp://en.wikipedia.org/wiki/List_of_countries_with_mains_power_plugs%2C_voltages_and_frequencies
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http://mathworld.wolfram.com/HarmonicSeries.html
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to move back and forth from the frequency to the time domain
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Variable voltage and frequency drives operate by first converting the incoming ac (typically 50 or 60Hz) into dc.  Then the drive controller uses this DC to generate an AC output that has the proper frequency to turn the motor at the desired speed.  The voltage output is varied depending on the amount of load on the motor.
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Wave shaping circuits are used in function generators.  You might get some help here http://en.wikipedia.org/wiki/Function_generator
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The following assumes you want to generate square and\ntriangle waves of relatively low frequencies:\n\nJust use a microcontroller. Use one output pin for the square\nwave and feed it through a D-type flip-flop configured as a \ndivide-by-two to get 50% duty cycle on the output. For the\ntriangle wave you can use PWM (Pulse Width Modulation)\nand hook the output pin to an RC (Resistor Capacitor) filter\nto form a simple D/A (Digital to Analog) converter.\n\nAlternatively, you can either buy a microcontroller with a\nbuilt-in D/A converter or add one externally. This will allow\ngeneration of any arbitrary waveform.\n\nA few of the many manufacturers of suitable microcontrollers\nare: \n\nAtmel, Microchip, Silicon Laboratories, and Texas Instruments.
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Need more detail.  Analog or digital?  Cutoff frequency?  Out of band rejection?  Is there a constraint on number of orders?  Matlab has built in functions to do filter design.  \n\nSomething a simple as a suitable capacitor will block low frequency.
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I have already answered part 1. in another question you've asked. I think you probably didn't use the right units (like cm needs to be convered to meters) and got the wrong answer.\n\nNow for part 2:\n\nInduced EMF, ℰ = -L(di/dt)\n\nwhere i is the current and L is the inductance\n\nWe are given that the magnitude of the induced current,\n\ndi = 47 mA\n\nand the oscillation frequency is 100 Hz. This means that dt = 1/f = 0.01 sec\n\nWe have L = 8.44 × 10-^3 henries from before\n\nSo |ℰ| = L(di/dt) = -(8.44 × 10-^3)(0.047)/(0.01) = 0.0397 volts\n\n------------------------------------------------------\n\nNow part 3 has to do with mutual inductance:\n\nVs = VpNs / Np\n\nwhere \n\nVs is the voltage across the secondary inductor, \nVp is the voltage across the primary inductor (the one connected to a power source), \nNs is the number of turns in the secondary inductor, and \nNp is the number of turns in the primary inductor. \n\nTherefore Vp = VsNp/Ns and Vs = 0.0397 volts as calculated before, so\n\nVp = (0.0397)(197)/(2920) = 0.00268 volts
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generator.\n\nAn AC generator is turned by mechanical power like steam engine or a jet turbine. When its coils spin in a magnetic field, electricity is generated\n\n\nz
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You create two waves a second -> frequency = 2 Hz\n\nperiod = 1/f = 1/2 = 0.5 s\n\nThe wave travels 0.18m per 0.5 s, which is .36 m/s
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Here is a Baldwin tutorial on FFT (he writes how-to Java articals for Developer.com):\nhttp://www.developer.com/java/other/article.php/3457251