What are these SMPS' four cables coming from the terminal plug, instead of two or three (Live, Neutral, Earth ground) , supposed to be?

http://imgur.com/9FA0KSU

 

The black object with "+" and "AC" marked on it, is a full wave rectifier. It turns AC into DC.
The white/black wires are from the power line. The red/yellow wires the "+ red" and "yellow -" for DC.

 

The black object with "+" and "AC" marked on it, is a full wave rectifier. It turns AC into DC.
The white/black wires are from the power line. The red/yellow wires the "+ red" and "yellow -" for DC.

It is more likely to be a Bridge Rectifier. AFAIK, I have never seen a full wave rectifier in that kind of square package.

 

I have never seen a full wave rectifier in that kind of square package.

They have been around for eons! ?
They usually have a heat sink plate on the bottom.

 

Bridge Rectifier ..................full wave rectifier

Please, what is the difference between the two?

 

What are these SMPS' four cables coming from the terminal plug, instead of two or three (Live, Neutral, Earth ground) , supposed to be?

If you look on the side of the Unit, the terminals are identified. AC, +v, AC, -v.

 

Please, what is the difference between the two?

A full wave rectifier uses two diodes and a bridge rectifier uses four diodes.
checkout this comparison of the two circuits.
https://www.tutorialspoint.com/full-wave-rectifier

 

Apparently, you didn't read your own link:


Types of Full Wave Rectifiers

• Centre Tap Full Wave Rectifier
• Full Wave Bridge Rectifier

 

Apparently, you didn't read your own link:


Types of Full Wave Rectifiers

• Centre Tap Full Wave Rectifier
• Full Wave Bridge Rectifier

I did read the link and there was a pretty clear distention between the properties. In any case, I have never seen the Center Tap Full Wave Rectifier in the 4-tab square package. I've only ever seen it implemented with discrete diodes. If you want to use the full names to avoid confusion, I have no problem with that. That is not what happened. That particular shorthand way of referring to those things was what I learned. Sorry your nose is so out of joint.

 

Semantics?
AFAIK
We all know this:
Center Tap Full Wave Rectifier uses two diodes + center tap transformer (3 connections to the transformer).
Bridge rectifier uses four diodes + two taps from the transformer.

They are both FULL WAVE rectification.