60HZ
It is an AC supply with an rms voltage of 230 v and a frequency of 50 Hz, as used throughout Europe.
frequency is genrally cycle per second, and frequencies may be of a dc nature or ac , devices which convert dc frequency in to an ac frequency are frequency converters and devieces which convert ac frequency in to dc frequency are frequency inverters. because in terms of power electronics, devices which convert ac to dc are called converters, and devices which convert dc in to ac are called "inverters" 'mehboob hunzai" I'm a engineers in this devices, the frequency inverter is convert AC to AC but with variable frequency output, means the frequency & voltage are adjustable; The frequency converter can convert DC to AC, like 24VDC to 220VAC and also the frequency is adjustable. One most important thing is the out power of frequency inverter just can be used for controlling AC motor, while frequency converter can be treated as normal power supply as our daily using power grid. "zhuge fs"
For Half wave rectification: Vr(HW) = I/(C*F) HW= Ripple Voltage I = Direct Current C= Capacitance F= Frequency of the ac line. For full wave rectification: Vr(HW) = I/(2*C*F)
Power = Current * Voltage * Power FactorAbove expression can further be explore as :1. For DC CircuitsPower = Current * Voltage2. For Single Phase AC CircuitPower = Current * Voltage * Power Factor3. For Three Phase AC CircuitPower = Line Current * Line Voltage * Power Factor
No. Use standard utility AC, 3 PH voltage to feed a Variable Frequency Drive (VFD). The VFD is then wired to the motor. The output of the VFD varies average voltage and frequency in a semi-constant proportion to keep Volts/Hertz ratio the same to the motor. The operator can then adjust or select the desired speed from the VFD and the VFD will run the motor continuosly at that desired speed. If you were to control only voltage to the motor without adjusting frequency in proportion, the motor would burn up.
In the US AC current oscillates at 60 Hz.http://www.answers.com/alternating+current
Converter is AC to DC. Inverter is DC to AC
You step down voltage from an AC generator with a transformer.You step down frequency from an AC generator with a motor/generator set, or with an inverter. This is not a common thing to do.
there is 100 ac Voltage in phone line in Pakistan
Frequency.
A frequency converter converts alternating current of one frequency to alternating current of another frequency. Generally it's used for controlling the ac motor speed by changing the supply frequency.
The AC current oscillates with cycle time to time.
The function of a frequency drive is to control the speed of an electric motor. In general, a frequency drive converts the ac supply voltage into a dc voltage and then converts this dc voltage into a ac voltage of which the amplitude (voltage) and the frequency can be varied. Giving you the possibility to fully control the speed of the motor. Applications: (big) ventilators, pumps, cranes, elevators and virtually all other applications where electric motors are used.
DC Analysis: For this analysis, frequency is made zero and the voltage of the source is increased in small steps from 0V.And the output voltage is plotted. So, finally we get a Vout vs Vin curve. AC Analysis: In this analysis, we choose an AC source. We keep the Offset voltage = 0V, AC voltage or small signal voltage = 2V (You can take any voltage you wish and it doesnt matter). So, to plot the ac response or frequency response of the circuit, increase the frequency in steps and note the output voltage. from this analysis , we can find the gain of the circuit over frequency.
On an AC motor you basically vary the frequency on a DC you can vary the voltage.
Yes, Its always there and according to AC supply frequency which is not visible by Human Eye
If current and voltage of an AC are in phase, then the "power factor" is 100%, and the load is a pure resistance, with no inductive or capacitive reactance (at least at the operating frequency of the AC).