So I'm trying to figure out which are the most common used regulators nowadays,
I'm trying to create a PCB that will give 5v and 3.3v for any kind or battery of curse above 5v
I'm working mostly with L7805, AMS1117, kIA1117, but I usually do not (never) use caps for them, just plug and
play, of curse I use 2 diodes always for the GND and VCC in any kind of case to not burn my circuits.
Do you have any other regulators that are good to be used for 5v, 3.3v?
but I usually never use caps for them, just plug and play,
So you still have not learned anything after all your questions then.
So you still have not learned anything after all your questions then.
I usually follow the datasheet diagram/circuit when I'm building a well designed PCB, so yea I use
caps but not always.
If you do not use capacitors on the input and output of your regulators, you should be surprised when they work, not surprised when they don't. If you looked at the supply voltage with a scope, you would be horrified.
When you get regulators, there's always some dropout - no linear regulator will get you 5v out with 5v in.
The ZLDO1117-series has decent input voltage spec (up to 18v I think) and a pretty low dropout (low 1.x volts) for a 1117-series (every manufacturer makes their own take on them, it seems). Regulators with lower dropout seem to have lower maximum input voltage as well.
The alternative is to use switching regulators (eg, DC-DC converters), which are more complex and expensive. A pair of buck converters would let you run at higher current, get 5v out if you put 5v in, and would greatly increase the maximum voltage you could use.
Domino60:
I usually follow the datasheet diagram/circuit when I'm building a well designed PCB, so yea I use
caps but not always.
How doe this square with:-
but I usually never use caps for them,
You can't have it both ways. "Usually never" means exactly that "usually follow the datasheet" is exactly the opposite of this.
Let's face it. You have been on this forum a long time and you have asked a lot of questions and have received a lot of good advice which you inevitably ignore.
You have not shown any capability to learn anything. You seem to me to be a troll.
You have not shown any capability to learn anything. You seem to me to be a troll.
Well I'm sorry that I can't store on my brain small details when I got projects going on, I said that I usually do not use caps on prototype boards or breadboards because it's just testing a components/module, but of curse I use caps following the datasheet of the regulator (circuit).
btw this topic is about regulators but no caps. I asked few advice's which are the best to use, I'm not a
database regulator on my own, I just know the basic ones or the one that I only know.
but I usually do not (never) use caps for them
Why would you say this? Now people like mike have to spend even more time telling people that:
They are doing it wrong
Just because it seems to work does not mean that it is
telling other people that it is OK to do things the lazy/wrong way is not fine.
I bet you would create "instructables" that say "You don't need a resistor on a data pin... it has internal current limiting!"
There is nothing here that you could not have figured out on your own regarding regulators..
You want perfect regulators? Buy 3 pin modules from Polulu... then you really do have something useful... and smart.
Polulu power supplies.
I know I mention their stuff sometimes... I have no benefit from doing this, they just have nice stuff.
Domino60:
I said that I usually do not use caps on prototype boards or breadboards because it's just testing a components/module, but of curse I use caps following the datasheet of the regulator (circuit).
The problem with that statement is that every datasheet instructs you to use the capacitors.
The problem with that statement is that every datasheet instructs you to use the capacitors.
Yes I know but at the exact moment when I use or test modules I don't have the exact capacitors that I need,
my house is not a shop, I'm just a simple hobbyist I test with what I have and when I do the final plans I go and buy the exact components that I need (+few extra to have around). 
Ok but now let's move on and tell me from your experience people, what kind of regulators are good to be used?
There is no such thing as a perfect regulator. Perfect for what? Low dropout, cheap, quiet, high efficiency? Pick two.
A regulator is an ic.
A regulator circuit uses an ic plus capacitors.
One does not work without the other.
Ic regulators are different.
Regulator circuits can be different also.
D60.
I do not wish to offend but is English your first language. ?
There is no such thing as a perfect regulator. Perfect for what? Low dropout, cheap, quiet, high efficiency? Pick two.
High efficiency, voltage noise (or how it's called), low dropout, heat on circuits, manufacture quality..etc
I'm currently playing with the ones I commented in the 1st comment.
I do not wish to offend but is English your first language. ?
No but I'd like to say that my native language is not so good as well, I've been born in my country grew as a kid in another country and learned 3 languages as single native to be able to communicate with everybody around me so my grammar or meaning is different because in all that 3 languages there is different meaning of a sentence so kinda sucks when you try to explain something and people have a hard time to understand you.