Multiple switch mode power supplies

[N_Cook]

Hopefully a hypothetical assuming cannot repair a small SMPS in a 1U case.
Assuming 3 of those little "plug-top" , I don't know the generic name,
"phone charger" SMPS can have the usual fudge of changing 2 or 3 resistors
each to give +/- 15V, .2A and 5V , .5A and mains safety issues taken into
account. Would there be an EMC or cross-coupling problem due to 3
free-running oscillator SMPS running inside one box, often the case that 3
would be togrther in close proximity charging 3 phones at the same time.

 

[Phil Allison]

"Nutcase Kook = Classic Pommy Fuckwit "

Hopefully a hypothetical assuming cannot repair a small SMPS in a 1U case.
Assuming 3 of those little "plug-top" , I don't know the generic name,
"phone charger" SMPS can have the usual fudge of changing 2 or 3
resistors

** For get that fucked idea.

each to give +/- 15V, .2A and 5V , .5A and mains safety issues taken into
account.

** 15 volt and 5 volt SMPS supplies are easy enough to find.

You can remove the PCBs from their cases and wire the outputs as you please.

Would there be an EMC or cross-coupling problem due to 3
free-running oscillator SMPS running inside one box,

** No.

Wot a fucking RETARD !!!!!!!!!!


.... Phil

 

[William Sommerwerck]

Would there be an EMC or cross-coupling problem due to 3

free-running oscillator SMPS running inside one box, often the
case that 3 would be togrther in close proximity charging 3
phones at the same time.

It's unlikely their transformers would have sufficient stray flux to produce
interference.

If you're worried, position two of them at right angles, and the third
not-in-line with either.

Please learn how to write a short, simple, declarative sentence! Learning
how will give you a great sense of satisfaction.

 

[Phil Allison]

"hr(bob) = google monkey


Mr. Cook's question was stated just fine,


** Only fine if you are an autistic, dyslexic fuckwit.


There is a slight chance that the oscillators would try to sync up,


** Like there is a slight chance the moon is made of green cheese.

**** off - moron.

 

[N_Cook]

It's unlikely their transformers would have sufficient stray flux to produce
interference.

If you're worried, position two of them at right angles, and the third
not-in-line with either.

Please learn how to write a short, simple, declarative sentence! Learning
how will give you a great sense of satisfaction.

Mr. Cook's question was stated just fine, we have some grouches here
this Monday morning.

There is a slight chance that the oscillators would try to sync up, it
depends on how close they are in free-running frequency and also on
how much intercoupling there is between the electronics, as well as
any possible flux coupling between the transformers. Really hard to
predict!

++++

So keep as separate as possible and perhaps 120/120/120 degree relative
orientations and inversion if 2 are constrained to be close, makes sense to
reduce that likelihood

 

[William Sommerwerck]

Please learn how to write a short, simple, declarative sentence!

Mr. Cook's question was stated just fine, we have some grouches
here this Monday morning.

I the it any way reader let and right you it's like ? So all to write guess
unscramble

Mr Cook, PLEASE LEARN HOW TO WRITE simple, clear sentences. It's a necessary
skill. When someone offers you sound advice, don't ignore it.

 

[Phil Allison]

"William Sommerwerck"

I the it any way reader let and right you it's like ? So all to write
guess
unscramble

** ROTFL !!

( see, I do say nice things sometimes .. )



..... Phil

 

[William Sommerwerck]

(see, I do say nice things sometimes ...)

So why do you get so angry? Is it psychosis? Or are you just playing the
"angry old man"?

It's okay to criticize. You don't have to jump down people's throats doing
it.