No, a transformer changes the ac to a voltage that the user requires. After that a rectifier can be connected to it to provide dc.
A transformer
generally power plants produce ALTERNATING CURRENT,because after producing the current the are sent to substations where they are stepped up or stepped down.so a transformer is mainly used over there.for a transformer we cant supply direct current.we should supply only alternating current.so they only produce alternating current................... 4RM PRAJITH
A transformer must be connected to an alternating current (AC) supply of the correct voltage.
Diodes are used after a center-tapped transformer in a DC to AC inverter to rectify the alternating current (AC) output of the transformer into pulsating direct current (DC). This rectified voltage is then smoothed using filters to produce a more stable DC waveform. The diodes act as one-way valves, allowing current to flow in only one direction, thus converting the AC voltage into a pulsating DC voltage.
Alternating Current is measured in Amperes.
bride transformer
A transformer can only increase or decrease the voltage of an alternating current, and it is called step-up transformer or step-down transformer accordingly.
AC (alternating current)
No. A transformer has to have AC, alternating current, to work. And since it's alternating, it'll have a frequency.
In order to induce voltage as an output, a changing magnetic field is needed. To create a changing magnetic field in the transformer a changing current and that is an alternating current.
No, it has to be an alternating current in order to work
TRANSFORMER
A transformer.
A transformer
An Alternating Voltage is induced in the secondary winding. When connected to an external load, you will have an alternating current.
Electrical (alternating current)
The basic principle of current transformer is same as that of the power transformer. Like the power transformer current transformer also contains a primary and a secondary winding. Whenever an alternating current flows through the primary winding alternating magnetic flux is produced, which then induces alternating current in the secondary winding. In case of current transformers the load impedance or "burden" is very small. Therefore the current transformer operates under short circuit conditions. Also the current in the secondary winding does not depend load impedance but depends on the current flowing in the primary winding.