What is the difference between...?

[Magnethos]

Pulsed Direct Current and Alternating Current?

What is the difference?

[petersone]

Hi Magnethos
Not an expert by any means,but pulsed dc goes from ov to say +12v and back to 0v.does not go negative
ac goes from 0v to +12 to 0v to -12 to 0v,goes positive and negative

[Hhx]

Hi Magnethos

I don't know the object of their question and if he has electronic notions. I suppose that he will refer in short to some application.

But if the question is in a generic sense:
The DC varies between 0 and the maximum value of the voltage, as well as its wave form is squared. Example: 20v DC vary between 0 and 20.
The AC varies between the maximum value and the maximum negative value with its step for 0, its wave form is usually senoidal. Example 20v AC varies between 20v and -20 v.

Regards,Hhx

[Magnethos]

thanks for the answers... I have very basic electronical knowledge. Now, I know the difference between DC and AC, but... what are the differences between DC and PDC (pulsed DC)?

Usually, we know that there are 2 kinds of electricity: AC and DC, but I have also heard about Pulsed DC. I want to know more about it. Sorry for my poor knowledge.

I have found some usefull info here:
http://en.wikipedia.org/wiki/Pulsed_DC

[Hhx]

Hi all

@ Magnethos
petersones and I have described Pulsed DC. Normal DC it doesn't vary the voltage, it is always the same one.
Example:
A connected battery to a bulb through a switch.

Case 1.- connected switch during 1 minute, the bulb shines the whole time. This is Normal DC.

Case 2.- Switch many connected and disconnected times during 1 minute, the bulb shines and he fades continually. This is Pulsed DC. the wave form is squared (on, off, on, off, on, off, etc...)


The wikipedia explanation is correct but in another field of the electronics.

Regards, Hhx (sorry my bad english)