0
Yes, an example is an automobile's ignition coil, which is energised from the battery, via the contacts within the distributor. The contacts open and close, supplying the ignition coil with pulsating current.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
Do transformer works on pulsating dc?
If the input is pulsating DC, then the output will be pulsating DC. It will not be shaped the same, but it will be close, depending on the frequency and rise and fall time in comparison with the inductive reactance of the transformer.
What device converts dc current to ac current?
A "Rectifier" converts AC current to pulsating DC current.
Why the windings burn when transformer is operated in DC?
Transformers are not intended to be operated in DC. DC does not provide the continuously fluctuating current that a transformer requires in order to function. On DC, a transformer will act as a transient mode inductor, and settle out to a high current state, destroying itself.
What device can be used to increase current in a DC circuit?
Transformer or instrument transformer. It can increase and decrease current output.
Can you step up or step down the DC voltage by a transformer?
You need alternating current for a transformer, for DC you would have to interrupt the power supply to make it effectively DC pulses.
Why diodes are used after center tapped transformer in dc to ac inverter?
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.
Do transformer works on pulsating dc?
If the input is pulsating DC, then the output will be pulsating DC. It will not be shaped the same, but it will be close, depending on the frequency and rise and fall time in comparison with the inductive reactance of the transformer.
What device converts dc current to ac current?
A "Rectifier" converts AC current to pulsating DC current.
Why transformer can not be used in dc supply?
The transformer cannot be used in the DC supply because it keeps on alternating its current, whereas the DC supply current should be constant.
Can a constant dc current induce a steady state voltage in a transformer?
No. A constant DC current of sufficient magnitude induces smoke in a transformer.
What does filter do in a transformer?
A transformer does not use a filter. You may be asking about the use of a filter in a power supply. A power supply uses a filter to change pulsating DC from the rectifier into smooth DC for the circuits that the power supply powers.
Why the windings burn when transformer is operated in DC?
Transformers are not intended to be operated in DC. DC does not provide the continuously fluctuating current that a transformer requires in order to function. On DC, a transformer will act as a transient mode inductor, and settle out to a high current state, destroying itself.
Can a constant dc current can induce a steady state voltage in a transformer?
No, the current has to change for a voltage to be induced in the transformer.
What device can be used to increase current in a DC circuit?
Transformer or instrument transformer. It can increase and decrease current output.
Why transformer is connected to ac?
Because of how a transformer works. Basically a transformer have a primary and a secondary winding sitting close to each other, with the primary connected to the ac source. Pushing ac through the primary wionding creates a pulsating magnetic field. Pushing a pulsating magnetic field through the secondary winding creates an electric current in it. That current will also be ac, but dependent on the number of turns in the windings it will have another voltage. DC don't give a pulsating magnetic field from the primary winding, and a stationary magnetic field won't generate any electricity in the secondary winding.
Which type of transformer is used in mobile charger?
The transformer used in mobile is pulse transformer which operates at very high frequency pulsating DC in order to make charger energy efficient and light weight.
If DC is applied to the primary of a transformer is there any current in the secondary and if there is then whether ac or DC?
first, understand that a transformer is an AC DEVICE. it wont work on dc...
