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Because Transformers are usually used to step down AC votage, however they usually can accept DC power to step down or up.
What else can I help you with?
Why cant a 18V battery be used as the input of a transformer?
The transformer needs AC at its input. The battery provides DC.
What is the Name of the transformer in which the output AC voltage is less than the input AC voltage?
It is a step-down transformer.
Why transformer works on ac not dc give two reasons?
A transformer requires a changing input to generate an output.
Would a step-up transformer or a step-down transformer be used to convert 260 volt AC from a household input into a 13 volt AC output in a portable electric fan?
A step-down transformer would be used to convert 260 volt AC from a household input into a 13 volt AC output for a portable electric fan. This type of transformer decreases the voltage, allowing the fan to operate safely and efficiently at the lower voltage required. Using a step-up transformer would increase the voltage instead, which is not suitable for this application.
Why do you obtain more dc voltage than ac voltage in power supply design by using transformer?
You don't. Transformers only work with AC voltage. Their input will be an AC waveform, and their output will be an AC waveform. Other electronics are used to convert the stepped down AC waveform from the transformer to DC.
What is TUF for half wave rectifier?
It indicate how well the input transformer is being utilized. It is given by the ratio of DC output power to the AC power rating of Transformer.
Why will or won't a transformer operate on AC?
transformer will work on ac
Is it possible to give 1 volt AC input to transformer and get 230volts output?
Yes, if the turns ratio is 1:230. Note to do this, you will have 230Amps of current on the input for every amp on the output, so you should size your transformer windings accordingly.
Why ac current is used in a transformer?
AC current or DC current can be used in transformers. A transformer is made of two coils of wire, the input coil induces a current into the output coil. Transformers change the voltage either up (step up transformer) or down (step down transformer). The amount of change in voltage is dependent solely on the number of windings in both coils in the transformer. DC transformers work exactly the same way AC transformers do.
How are is a transformer and a rectifier different?
A transformer changes the VOLTAGE of AC current (AC to AC). A rectifier changes AC to DC.
Is it possible to use DC to DC converters as DC transformers for very high voltage?
A: a transformer input will always demand an AC input a DC input may actually damage it if enough power is available
What is the type of transformer used to step down 230v ac to 48vdc?
A transformer alone cannot accomplish this. Transformers do not output DC directly, only AC. For DC output, additional components (rectifier, filter capacitor) are necessary. This would be properly called a DC power supply rather than just a transformer. To specify the proper power supply, you need at a minimum the input voltage (AC), the input frequency, the output voltage (DC), and the output current.
