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What type of voltage must be passed across a transformer?
A transformer must be connected to an alternating current (AC) supply of the correct voltage.
What is ac and DC supplies?
AC supply means the supply voltage is alternating one. Supply has some particular frequency and magnitude. e.g. usual power supply to domestic use DC supply means the supply voltage (or current) is not alternating. It is fixed one. i.e. frequency is zero. e.g. batteries
Why transformer not working in dc supply?
Because it is only possible to have a voltage in the secondary winding when the current in the primary is changing. This is why only alternating current can be used for transformers.
Do generators supply direct current?
Yes. Alternators supply alternating current.
What type of electrical current does a notebook require and what device provides this current?
A notebook computer generally requires direct current. This current comes from a battery or a power supply. A battery converts chemicals into electricity, while a power supply or battery charger converts somewhat high voltage alternating current into lower voltage direct current.
Does a computer's power supply generate electricity?
In short, no. The power supply takes the alternating mains voltage and reduces it to the low voltages and direct current needed by the components of your PC.
Is it true that the current supply from electric power generating plants is an alternating current?
Yes, it is true that current supply from generating plants is an alternating current. There is no success found in bulk power generation of direct current ( D.C. ) in a power plant. But yes it is possible to transmit the power in the form of direct current ( High Voltage Direct Current Transmission-HVDC Transmission ) that possible after converting the generated alternating current into direct current with the help of high range converters.
The difference between a transfer and a rectifier?
A transformer is basically used to step up or step down the main power supply. The rectifier is used to convert an alternating current (AC) or voltage to direct current (DC) or voltage.
Why does an amplifier need a power supply?
The power supply in either a guitar amplifier or in a professional sound amp reduces the 110v alternating current to a direct current. Also it reduces the voltage that can be used by the speakers, usually 12+ volts. Also if there where no power supply and there could be a possible way of reducing the voltage that could be used in the same was a direct current, you would here a constant phasing type noise from the current alternating. A power supply unit converts power that can be used in correctly in sound frequencies.
4 What is the difference between a transformer and a rectifier Which are found in a PC power supply?
A rectifier is a device that converts alternating current to direct current. A transformer is a device that changes the ratio fo current to voltage. A rectifier is found in a PC power supply.
Will a battery supply direct current or alternating current or ac?
direct current.
What is the basic difference between dc current and ac current?
AC (Alternating Current) - It fluctuates from +ve to -ve (Ie- positive voltage to negative voltage), it does this constantly, hence why it alternates. DC (Direct Current) - It has a constant supply of electricity but the voltage does not change at all. It goes in one direction ONLY. Main difference: AC changes the voltages from positive to negative CONSTANTLY (current goes up & down), and DC has a continuous supply of current which flows IN ONE WAY.
