I thought the AC line filter was used to supress the EMI the production of the circuit. So when would i need that filter? If i had a circuit with very high frequencies, then i would need ? Enlighthen me sire. Big mess in my mental archives.

 

There are also legal requirements to suppress radiation created inside your project. This usually becomes a concern at RF frequencies. You will see such labels on video and TV equipment.

À la the infamous 'Part 15'

 

I thought the AC line filter was used to supress the EMI the production of the circuit. So when would i need that filter? If i had a circuit with very high frequencies, then i would need ? Enlighthen me sire. Big mess in my mental archives.

1) To protect the circuit from malfunction/damage from line noise
2) To 'protect' the line from 'hash' or incidental radiation generated by the connected equipment (principally RF or heavy switching devices)
--- OR ---
Both

 

If i may know, since when do you guys have contact with electronics?

 

If i may know, since when do you guys have contact with electronics?

Well, speaking for myself, I'm actually a hairdresser who finds amusement in pretense to scientific talent

 

1) To protect the circuit from malfunction/damage from line noise
2) To 'protect' the line from 'hash' or incidental radiation generated by the connected equipment (principally RF of heavy switching devices)
--- OR ---
Both

I see, definitely i had confused concepts, this will make my design extremely easy. These AC line filters are good for switching PSU right? I see them a lot in these situations.

 

HP is some kind of hot-shot at a University with a real engineering degree and I have been cashing paychecks as a technician since 1970.

 

I see, definitely i had confused concepts, this will make my design extremely easy. These AC line filters are good for switching PSU right? I see them a lot in these situations.

"You can observe a lot by watching." Yogi Berra

 

Well, speaking for myself, I'm actually a hairdresser who finds amusement in pretense to scientific talent

Seriously? That's cool ahahah. I am a ME student and electronic hobbyst(3 weeks career, long shit).

 

HP is some kind of hot-shot at a University with a real engineering degree and I have been cashing paychecks as a technician since 1970.

I see... long-life experience huh, i'm 17 years old yet.

 

I see... long-life experience huh, i'm 17 years old yet.

Enjoy it while it lasts! (youth, that is!)

 

Enjoy it while it lasts! (youth, that is!)

Trying to ahaha. One last question. The 50Hz line has some harmonics components, right? If positive, are these caps and voltage regulators enough? Or this is me confusing again?

 

The only harmonics you need to think about are nearby lightning strikes, and we don't have filters for that. Just put your completed projects in a metal box so they explode in a confined space.

 

Ahahah, yeah, i'll do that, thanks guys.

 

Seriously? That's cool ahahah. I am a ME student and electronic hobbyst(3 weeks career, long shit).

From a grateful watcher, reader or maybe listener: this nice thread is what I enjoyed the most in a very long time and, why not, learnt as well.

The above quoted colorful expresion; plus the "daylight" parameter and the "Ay Chihuahua" one, added a fine interdisciplinary / muticultural touch.

And being this a technical forum of sorts, it is good to note that even units, Hz, MHz, weeks and years, were kept straight all the time by the contributors.

Gracias (and I mean it) to all for that!