# What causes pulsating DC?

## What causes pulsating DC?

Pulsed DC is commonly produced from AC (alternating current) by a half-wave rectifier or a full-wave rectifier. Full wave rectified ac is more commonly known as Rectified AC. PDC has some characteristics of both alternating current (AC) and direct current (DC) waveforms.

## How do you build a pulsating DC?

To obtain pulsating DC, use rectifier after oscillator, i.e. output of oscillator is connected to rectifier. For frequency upto 1 KHz, normal rectifier diode will work. For higher frequency use point contact diode or diodes used for high frequency rectification.

Can pulsating DC flow through capacitor?

If you guarantee that the sinusoidal with the frequency f can pass the capacitor without distorting (i.e.; 12πfC <. That’s how DC pulses pass the capacitor in a correct circuit design.

### How do you obtain DC output from pulsating voltage?

Expert-verified answer The simplest way to obtain a steady DC output from the pulsating voltage is using a rectifier and then a capacitor. By using a half wave or full wave rectifier you can cancel the negative part if the pulsating voltage. This is done when a diode is connected in series with the input voltage.

### Does pulsating DC have frequency?

No, DC current as defined as DC has no frequency.

What is a pulsating current?

Definition of pulsating current : a direct current that has recurring more or less regular variations in magnitude.

#### What is used to convert pulsating DC into pure DC?

Filters are used to convert Pulsating dc signal into a pure dc signal.

#### How does a capacitor filter pulsating DC?

The main duty of the capacitor filter is to short the ripples to the ground and blocks the pure DC (DC components), so that it flows through the alternate path and reaches output load resistor RL.

How do you get a study DC output from the pulsating DC output of a full wave rectifier?

Solution : We can obtain de voltage by filtering out the ac components by using filter circuit.

## How do we produce a nice steady DC output?

In order to produce a steady DC voltage from a rectified AC source, a filter or smoothing circuit is needed. In the simplest form this can be just a capacitor placed across the DC output of the rectifier. There will still remain an amount of AC ripple voltage where the voltage is not completely smoothed.

## What is the frequency for DC source?

0 Hz
The frequency of direct current (DC) is 0 Hz, as the current only flows in one direction.

What converts pulsating DC to pure DC?

### Why capacitor is used as a filter?

For low-frequency signals, the capacitor offers extremely high resistance and for high-frequency signals, it proves less resistance. So it acts as a high pass filter to allow high-frequency signals and block low-frequency signals.

What smooths out the pulsating DC?

In power supplies, it will need a filter circuit connected at the output of the bridge circuit to filter out or to smooth the pulsating dc signal so that a nearly constant DC voltage is being supplied to the load circuit.

#### What is the ripple factor?

The ripple factor, defined as the ratio of the rms value of the ac component to the dc component, increases with the firing angle. From: Control in Power Electronics, 2002.

#### How do you get a steady DC output from the pulsating DC output of a full wave rectifier Class 12?

What is DC power source?

Direct current (DC) occurs when the current flows in one constant direction. It usually comes from batteries, solar cells, or from AC/DC converters. DC is the preferred type of power for electronic devices. Alternating current (AC) occurs when the electric current periodically inverts its direction.

## What is the source of pulsed DC?

Pulsed DC is commonly produced from AC (alternating current) by a half-wave rectifier or a full-wave rectifier.

## What is meant by pulsating DC?

By pulsating DC, you mean a unidirectional voltage changing with time. If such a voltage is applied across primary of a transformer, it will produce unidirectional pulsating flux in the core. Now, to induce emf in secondary, as per Faraday’s law of electromagnetic induction, only a change in flux is enough.

What is a pulsed dc current?

Pulsed DC (PDC) or pulsating direct current is a periodic current which changes in value but never changes direction. Some authors use the term pulsed DC to describe a signal consisting of one or more rectangular (“flat-topped”), rather than sinusoidal, pulses.

### What is pulsed DC sputtering?

Pulsed DC Sputtering is a physical vapor deposition technique with a wide range of applications in the semiconductor, optical and industrial coating industries. Pulsed DC Sputtering is particularly effective for the sputtering of metals and dielectric coating – coatings which are insulating non-conducting materials that can acquire a charge.