solution: Erms=100 V Irms=2 A p.f.=0.8 As per formula, Power(W)= Erms * Irms * p.f. = 100 * 2 * 0.8 = 160 W The ratio of watts average power (the average power measured in watts) to the apparent power of an alternating-current circuit. By definition, the equation below holds, which is the ratio of instrument readings. A watt-meter indicates average power, and http://www.answers.com/topic/electrodynamic-instrument or iron-vane instruments show rms voltage and current. For the steady-state ac circuit under sinusoidal voltage and current, pf = cos θ, where θ is the phase angle between the voltage and current. This definition is restricted to sine waves of the same frequency.
P=VIpower_factor, so P=100x2X0.8
The input voltage range for the Toshiba power supply is AC 100V - 240V. The output voltage is DC 19V / output current is 4.74A. This power supply comes with a power cord and packaging will state voltage recommended for the product.
Power dissipated in a resistance = E2/R = (100)2/100 = 100 watts.
LM317 can be used for regulated dc power supply upto 37V. For more voltage range, a zener can be connected at the reference pin.
200 V
The power going into a transformer (primary) is the same as the power leaving a transformer (secondary). P=VI Power = Voltage X Current. A step down transformer means that the voltage leaving a transformer is less than the voltage entering the transformer. The power out is the same as the power going in, so if the voltage is less, the current must be greater. Well said. This is why transformers are rated in VA, on bigger transformers KVA. Both sides have to be equal.
v(81v - 100)
A circuit has an applied voltage of 100 volts and a resistance of 1000 ohms. The current flow in the circuit is 100v/1000ohms which would equal .1.
Nominally one for each Ampere of current that the mains supply is capable of delivering on a continuous basis.
Power = Voltage * CurrentIsolating current, we getCurrent = Power/Voltage, I = 800W/100V = 8 amps
Zero Volts, Ground, or Earth. All current flows to this. It stand for NO POTENTIAL. A ground can be elevated to 100v that is the return for that particular circuit sitting 100 volts from earth.
The input voltage range for the Toshiba power supply is AC 100V - 240V. The output voltage is DC 19V / output current is 4.74A. This power supply comes with a power cord and packaging will state voltage recommended for the product.
only the iMac and the mac Pro
why not ? a 1000kva means you will get the power out as 1000kv per amp in essence it can be a 100v with 10 amp out. means the same thing to me. It's power factor depends upon the load. Thus we can not give absolute value of KW rating of a Xmer or an alternator in the manufacturing plant.
100v2 - 220v + 121 = (10v - 11)2
Power dissipated in a resistance = E2/R = (100)2/100 = 100 watts.
i am quite sure these adapters have a "resister"of sorts (voltage regulator) in them which holds back any voltage above say 100v. So they are still runnig internaly at 100v even when plugged into 240v outlet
LM317 can be used for regulated dc power supply upto 37V. For more voltage range, a zener can be connected at the reference pin.