A 24 volt DC power supply provides DC amps, not AC amps. You cannot draw 1.8 amps AC from a DC power supply, without some kind of inverter stage.
That is the answer to the specific wording of the question. Now the answer to the question I think was originally intended...
If 1.8 amps AC is being supplied to a 24 volt DC power supply, what would the current supplied by the power supply be?
Power is volts times amps, so power supplied to the power supply is 120 VAC (assumed) times 1.8 amps, or 216 watts. If the power supply is 100% efficient, then the power input equals the power output, so use the some equation to take 216 watts and divide by 24 volts, and you get 9 amps.
Keep in mind, this is ideal state, assuming 100% efficiency, and no real power supply will be that.
No ~ the power supply is capable of supplying 5 Amps, but the device will only draw 1 Amp. Therefore the power supply can still safely supply another 4 Amps if required.AnswerIt's important to understand that the '5 A' referred to in the specification of your power supply is its capacity -the actual current drawn from the power supply is determined by the load you attach to it. So, if your load requires only 1 A, then that's how much current will be drawn from the power supply.
maximum demand is measured in kva because current drawn is dependent on power factor for the same load and current drawn is calculated with kva
Assume the rating of 100W refers to operation on a supply of 117 volts.Power = (voltage) x (current)Current = (power) / (voltage) = 100/117 = 0.855 ampere (rounded)Power = (voltage)2 / (resistance)Resistance = (voltage)2 / (power) = (117)2 / 100 = 136.89 ohms
The supply won't have to work as hard. It is perfectly acceptable, for example, to use a 1A, 12v supply to supply a 12v, .5A load. The current rating indicates the ability of the supply to dissipate heat caused by the current flowing. If the load current is above the power supply current rating, the power supply will overheat.
DC Power is Direct Current Power Supply.
If the terminal voltage decreases when more current is drawn, that is due to the internal resistance of the power supply. Every power supply has a limit to how much current can be drawn. It is limited by the internal resistance and due to ohms law the more current drawn through a resistor, then the more voltage is produced across it. This is in opposition to the terminal voltage and is subtracted from it.
No ~ the power supply is capable of supplying 5 Amps, but the device will only draw 1 Amp. Therefore the power supply can still safely supply another 4 Amps if required.AnswerIt's important to understand that the '5 A' referred to in the specification of your power supply is its capacity -the actual current drawn from the power supply is determined by the load you attach to it. So, if your load requires only 1 A, then that's how much current will be drawn from the power supply.
maximum demand is measured in kva because current drawn is dependent on power factor for the same load and current drawn is calculated with kva
Assume the rating of 100W refers to operation on a supply of 117 volts.Power = (voltage) x (current)Current = (power) / (voltage) = 100/117 = 0.855 ampere (rounded)Power = (voltage)2 / (resistance)Resistance = (voltage)2 / (power) = (117)2 / 100 = 136.89 ohms
You can convert 1hp in to 745watts off power, and using the power formula I=amps(current) P=power(watts) and U=volts so I=P/U if conected to a 230v supply the current would be 3.23amps and 110v would be 6.77amps
In case of dc there is no reactive components and current drawn from the supply is in phase with the voltage.due to absence of inductor and capacitor the reactive power demand in dc is zero.
It is a the current drawn by the application that is connected to the power source
The supply won't have to work as hard. It is perfectly acceptable, for example, to use a 1A, 12v supply to supply a 12v, .5A load. The current rating indicates the ability of the supply to dissipate heat caused by the current flowing. If the load current is above the power supply current rating, the power supply will overheat.
No. The capacitor may improve its power factor by altering the effective reactive power of the machine, thus reducing the current drawn from the supply.
DC Power is Direct Current Power Supply.
It depends on the current being drawn by the computer's components. The voltage will remain constant at 230V and should have a maximum amperage rating labeled on the power supply. Multiply the volts times the max amp rating to find out the max wattage that the power supply can handle. The watts actually being used is probably lower than the rated max (and should be).
Depends on the model, usually there is a information plate on the device showing power consumption in watts, The theoretical current flow can be estimated from : I (current - amps) = Power (watts) / Voltage (volts). > So if you have a 1000 watt toaster @ 230 volts supply, the current in amps = 1000 / 230 = 4.35 amps.