What is the difference between pure DC and pulsating DC?
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What is the difference between pure DC and pulsating DC?
In a pure DC the voltage at any given moment is the same. In a pulsating DC, the average of the voltage is same. It’s basically an AC voltage superimposed with the DC.
Would a transformer work with pulsating direct current?
Yes , transformer can work on pulsating DC , the key note is that you are applying pulsating DC which means the waveform of pulsating (changing) DC is changing every time with respect to time, which is needed to create the flux.
How do you remove ripples from DC?
A more common solution where good ripple rejection is required is to use a reservoir capacitor to reduce the ripple to something manageable and then pass the current through a voltage regulator circuit.
Is pulsating DC same as AC?
Pulsed DC (PDC) or pulsating direct current is a periodic current which changes in value but never changes direction. 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.
Can we give pulsating DC to transformer?
All Answers (8) Yes, the input to a transformer can and often is pulsating DC. The transformer core needs to be reset. And without a high-frequency switching circuit usually with an inductor to help reset the core, the transformer would saturate probably on the 2nd cycle of the AC power line.
Is pulsating current DC?
Pulsed DC (PDC) or pulsating direct current is a periodic current which changes in value but never changes direction. Pulsed DC is commonly produced from AC (alternating current) by a half-wave rectifier or a full-wave rectifier.
How do you build a 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.
What is a ripple factor?
Ripple factor is defined as. The ratio of RMS value of an alternating current component in the rectified output to the average value of rectified output. The ripple factor is denoted as γ. It is a dimensionless quantity and always has a value less than unity.
How can I get pulsating DC from pure DC?
The easiest way of obtaining pulsating DC from pure DC is by using a switch Close the switch for sometime. You get pure DC. Open the switch for sometime. You get zero output. Keep doing this continuously and voilà! You have pulsating DC.
What is the difference between pulsating DC and ripple DC?
Fluctuating DC directly from a rectifier is called pulsating DC (dotted line). Adding a capacitor in parallel (called a reservoir capacitor) removes most of the pulses and gives a DC with ripples and is called a ripple voltage (red line). The ripple is due to incomplete suppression of the alternating waveform within the power supply.
How to get pulsating DC from an oscillator?
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.
How can I produce pure DC with no ripple?
Using capacitors and inductors will certainly reduce DC fluctuations to a ripple but to completely produce pure DC with no ripple you can feed the filtered DC ripple to a voltage regulator. They are available as switching regulators or the simpler and more inefficient linear regulators.
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