Diagram showing AC mains, transformed AC, rectified DC, filtered DC + regulated

[darron]

I'm writing up a little article and drew a picture to help explain power supply filtering. Thought this might interest someone?



Any additions/adjustments please let me know. I was taught that once rectified it counts as DC, just not filtered.

Of course the voltages and time will be different in different countries. Same principles apply.

[El Heisenberg]

i just built a regulated power supply from tonepad. I cant get rid of the hum.

[askwho69]

I want to rise this up!this is very informative why not everyone is interested on this?this might help us the HUM problem

By the way -- how can we regulate the DC? by using IC only>? and filtering is just CAps?


Tonepad.com PSU i made it also i just tweak the trim and hum is gone

[petemoore]

i just built a regulated power supply from tonepad. I cant get rid of the hum.
  compare it to battery/circuit performance, consider 'does the power supply introduce a ground loop ?
  The rail on the bottom right, the solid rail looking one, a batch of those should do it.
  http://geofex.com/Article_Folders/Power-supplies/powersup.htm
 
  "What is DC?"...should have rail-like quality to it.
  AC>Rectified>Filtered>Regulated>filtered = DC.
  If AC is noticed?...it's not DC.
 

[darron]

on your comment i made an alteration petemoore. hope that looks better to you?

[askwho69]

Wow thank Petemoore i wasquestioning AC and DC thanks so much for the info