Power Supply Requlation

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Just one stupid question,


What is the meaning of regulated output, or Unregulated output in SMPS???


In a SMPS schematic I can see diodes and capacitors at the Transformer outputs, Those should do the regulation?? (as we know in Normal PSU)?

and the author of that supply wrote a NOTE on top of the ETD44 transformer.

Tempreture rises if supply in NOT regulated??


Any help about this?
 
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