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Re: Battery Power Supply

Posted: Tue Nov 17, 2015 5:16 pm
by nige2000
sima66 wrote:Thanks Nigel, but you should see my "unpublished work"!
The "blueprints" that I posted are the masterpieces! :)

Did you meant adding another switch like this:
Image
Yea less chance if a short
But it wouldn't bother me for my own use
Them switches are expensive

Re: Battery Power Supply

Posted: Tue Nov 17, 2015 5:33 pm
by sima66
nige2000 wrote:
sima66 wrote:Thanks Nigel, but you should see my "unpublished work"!
The "blueprints" that I posted are the masterpieces! :)

Did you meant adding another switch like this:
Image
Yea less chance if a short
But it wouldn't bother me for my own use
Them switches are expensive
I have two extra switches so that is not a problem.
The problem is that I will have to use a longer leads for the wires from batteries to device if I use that "extra"switch! The arrangement will not be as simple as is in the picture.

When we say short as possible DC wires from battery to device, does that apply to both (+ and -), or just +?

Re: Battery Power Supply

Posted: Thu Nov 26, 2015 4:11 pm
by sima66
Instead to have another transformer and Reg for 3.3v batteries, how would be if I use one 3.3v line from TeraDak PS and charge the batteries?

Would that affect the SQ .......or burn my house?

Re: Battery Power Supply

Posted: Thu Nov 26, 2015 4:59 pm
by nige2000
sima66 wrote:Instead to have another transformer and Reg for 3.3v batteries, how would be if I use one 3.3v line from TeraDak PS and charge the batteries?

Would that affect the SQ .......or burn my house?
thats fine too with a switch:)

Re: Battery Power Supply

Posted: Thu Nov 26, 2015 9:11 pm
by sima66
nige2000 wrote:
sima66 wrote:Instead to have another transformer and Reg for 3.3v batteries, how would be if I use one 3.3v line from TeraDak PS and charge the batteries?

Would that affect the SQ .......or burn my house?
thats fine too with a switch:)
Thanks Nigel,
I meant everything the same (like in the last "blueprint"). The wires will be taken directly from the 3.3v Reg from TeraDak and connected to the switch.
This way it will be much simpler for me and much less parts! :)

Re: Battery Power Supply

Posted: Sun Dec 06, 2015 4:28 pm
by sima66
Since I have 8 LiFePo batteries, would it be better to use 2 batteries per 3.3v device, or at list 4 batteries for 2-3 devices?

Re: Battery Power Supply

Posted: Wed Dec 09, 2015 9:03 pm
by sima66
sima66 wrote:Since I have 8 LiFePo batteries, would it be better to use 2 batteries per 3.3v device, or at list 4 batteries for 2-3 devices?
Can anyone tell me if it will better to use more than one 3.3v battery per device, or it will be worst or no difference?!

Re: Battery Power Supply

Posted: Wed Dec 09, 2015 9:36 pm
by jkeny
sima66 wrote:
sima66 wrote:Since I have 8 LiFePo batteries, would it be better to use 2 batteries per 3.3v device, or at list 4 batteries for 2-3 devices?
Can anyone tell me if it will better to use more than one 3.3v battery per device, or it will be worst or no difference?!
I don't think it will make any difference as the transient current draw shouldn't be greater than a single battery can provide.

Re: Battery Power Supply

Posted: Fri Dec 11, 2015 3:23 am
by sima66
Thanks John.

Would be a 13"-14" long wire between the battery and device be to long and make audible difference compared to 3-4" long?

The reason I'm asking this is because I'm making my PC box and now I'm doing the "arranging&planing" and drilling the inside of it!
The more info I have now - the more hair I will have latter! :)

Re: Battery Power Supply

Posted: Fri Dec 11, 2015 11:25 am
by nige2000
one cell per device is sufficient

personally i think it will be difficult to tell difference in sq with cable length from battery under 15"
as i often ran tests at these lenghts