Off-Topic > Off-Topic - Tiny Core Lounge
Raspberry Pi
Rich:
Hi cast-fish
--- Quote ---You do talk some Rubbish sometimes.
It's like. "did he even read the sentence before posting it?"
--- End quote ---
Did you bother to read and understand post #33 written by bmarkus?
--- Quote ---Ofcourse a phone charger is a "power supply" because it powers the phone
while charging the phones empty battery.
--- End quote ---
Yes, but that does not mean it is a proper power supply for this application. I tried to find some specs for
phone chargers, and none listed whether the output was regulated, what the output tolerance was, or
how much ripple they put out. I did find one that listed its input voltage as 100-240VAC, and its output
voltage as 4.5-9.5VDC, sound like a good power supply to you? Just because a phone can be charged
from a USB port, does not mean its charger is suitable for powering logic circuits.
spence91:
--- Quote from: bmarkus on August 15, 2012, 12:30:45 AM ---
--- Quote from: cast-fish on August 14, 2012, 10:44:03 PM ---
--- Quote from: bmarkus on August 06, 2012, 04:16:38 PM ---A phone charger is not a power supply.
--- End quote ---
You do talk some Rubbish sometimes.
It's like. "did he even read the sentence before posting it?"
Ofcourse a phone charger is a "power supply" because it powers the phone
while charging the phones empty battery.
What school did you go to?
V.
--- End quote ---
Thanks. School? M.Sc.E.E in electronics and computer sciences, amateur radio operator with HAREC licence. To be honest I'm tired to discuss hw construction details whith someone who knows nothing about circuits and takes out one sentence without reading deatails.
You can do whatever you want with your toys. Please, let me out of your bussiness.
Thanks.
--- End quote ---
I don't think anyone takes exception to your reasoning or your impressive electronic credentials. I was just calling you up on the blanket statement that was made.
My shaky reply aside, it still remains that the Raspberry Pi foundation endorses a variety of power supplies, with many of them being phone chargers.
What is far more important is of course getting TCL up and running on this board....
netnomad:
hi friends,
i learnt that if i have problems with my rpi, it's worth to check the power supply.
in my daily work i experience regulary that technical problems are often caused by a poor power supply.
after changing or improving the power supply many problems disappear...
cast-fish:
Hello
oh mt "phone charge" ppost is a bit heavy. Sorry. It was just correcting Markus blanket statement
which is incorrect.
his post "a phone charger is not a power supply"
hie next post
A phone charger is providing power to charge a mobile phone battery where charging is regulated by the phone's electronic and phone itself is powered from the battery having a regulator, filter circuit between battery and and phone. It means, that requirement on stability, noise, etc. is low on charger, it can be a cheap shit.
i hope that clears up why i commented.
In relation to the comment that i have no experience with circuits. (hmmm)
My comments are not Flame Rich and Markus but fact. I stand by what i say as
a roadblock for a wholly 100 percent incorrect comment from BM.
As for the OP....
The Rasberry states that it can work with many "mobile phone chargers"
and it was designed this way. Two hundred thousand Pi's have been sold. Youtube vids show many phone chargers plugging in and powering the Pi. (funnily enough that means the phone charger is a Power Supply).
Rasberry foundation just qoute what electronic specs are needed from a phone charger to allow the charger power the Pi. They state the required voltage thresholds and current thresholds. Your charger will work right if it is in that catagory..... If not....then it won't work right.
thanks
Vince.
hiro:
Stuff breaks, so just try out different chargers, power sources, cables, whatever. Specs don't matter to the Chinese anyway.
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