genoaz;156764 Wrote:
> What if you just use four NiMH rechargable batteries, straight in - no
> regulators. [EMAIL PROTECTED] volts/2500 mAh. I wonder how that would sound?
This works just fine. I have done this for some time. Using a pack of 4
Sanyo RC2400 NiCd cells, these are at around 5.5V
peejay;158595 Wrote:
> As Sean Adams once told me, the switching supply of the SB3 introduced
> noise well below the noise floor of the DAC, and other components in
> the output stage, so if you pick anything up by switching to battery,
> you have better ears than I. But I'm sure your ears are mo
genoaz;156764 Wrote:
> What if you just use four NiMH rechargable batteries, straight in - no
> regulators. [EMAIL PROTECTED] volts/2500 mAh. I wonder how that would sound?
While this may give you 2 hours of listening or so, I believe that the
NiMH solution at 1 amp load may lose terminal volt
JohnSwenson;158072 Wrote:
> I have had some experience with the little wall wart that comes with the
> SB3. As many of you know I have modified my SB3 to take its "I2S" (which
> is really left justified) data signals into my DAC and feed the DAC's
> clock into the SB3. The other day I had it out
JohnSwenson;158072 Wrote:
> I have had some experience with the little wall wart that comes with the
> SB3. As many of you know I have modified my SB3 to take its "I2S" (which
> is really left justified) data signals into my DAC and feed the DAC's
> clock into the SB3. The other day I had it out
I have had some experience with the little wall wart that comes with the
SB3. As many of you know I have modified my SB3 to take its "I2S" (which
is really left justified) data signals into my DAC and feed the DAC's
clock into the SB3. The other day I had it out on the bench trying out
some change
genoaz;156764 Wrote:
> What if you just use four NiMH rechargable batteries, straight in - no
> regulators. [EMAIL PROTECTED] volts/2500 mAh. I wonder how that would sound?
At 1A+ load, they would sag below 5V even with large cells. Figure 1
V/cell in operation, so 5V batt would be right, but
ezkcdude;156786 Wrote:
> I also think you don't need the "pre-regulator". Just run the 6V
> straight into the SB3. It should be fine, as long as the current
> capacity is large enough (>1A). I would imagine the SqueezeBox uses LDO
> regulators, anyway.
Not sure. When I experimented with using a
I also think you don't need the "pre-regulator". Just run the 6V
straight into the SB3. It should be fine, as long as the current
capacity is large enough (>1A). I would imagine the SqueezeBox uses LDO
regulators, anyway.
--
ezkcdude
DIY projects page:
http://www.ezdiyaudio.com
System:
SB3->E
genoaz;156764 Wrote:
> What if you just use four NiMH rechargable batteries, straight in - no
> regulators. [EMAIL PROTECTED] volts/2500 mAh. I wonder how that would sound?
Probably fine. If you can get larger capacity ones that's even better.
You probably want to parallel the battery with a d
What if you just use four NiMH rechargable batteries, straight in - no
regulators. [EMAIL PROTECTED] volts/2500 mAh. I wonder how that would sound?
--
genoaz
genoaz's Profile: http://forums.slimdevices.com/member.php?use
moshulu;155246 Wrote:
> In that case, you could ditch the regulator, and just put a high quality
> 1-ohm / 1-watt resistor in series with the battery. There would be no
> regulator voltage or noise issues. What do you think?
Yes, I was planning to try that.
I'll report back when I do.
Regards
P Floding;154400 Wrote:
> http://www.national.com/pf/LM/LM1085.html
>
> Due to the current draw being just 0.9 amps it seems to work fine.
> Also, the battery actually gives about 6.23 volts. Output now is set to
> 5.17 volts.
>
> BTW, I (accidentally due to battery running low) noticed that th
After a few more days with battery power I can only say that my initial
observations hold, and, if anything, the change is greater than I
initially thought.
Something to be aware of, however, if you try this and my other
tweaks/mods is that decreased noise can give an impression of dullness
och l
NewBuyer;154339 Wrote:
> P Floding, that is really interesting! Especially how the wall-wart
> seems to degrade simply by being plugged only into the wall (and the
> other side presumably left unplugged). I wonder, do you have (or could
> you source) an optical cable to try? I would be quite inte
tyler_durden;154365 Wrote:
> I be interested to know what sort of analog 5V regulator runs with just
> 6VDC input. Most require a couple volts drop to work, and when they
> don't get it, they stop regulating.
>
> TD
http://www.national.com/pf/LM/LM1085.html
Due to the current draw being just
tyler_durden;154365 Wrote:
> I be interested to know what sort of analog 5V regulator runs with just
> 6VDC input. Most require a couple volts drop to work, and when they
> don't get it, they stop regulating.
>
> TD
Me too. I use the LM317 which needs a 3 volt drop to operate.
--
peejay
Af
I be interested to know what sort of analog 5V regulator runs with just
6VDC input. Most require a couple volts drop to work, and when they
don't get it, they stop regulating.
TD
--
tyler_durden
tyler_durden's Profile: h
P Floding, that is really interesting! Especially how the wall-wart
seems to degrade simply by being plugged only into the wall (and the
other side presumably left unplugged). I wonder, do you have (or could
you source) an optical cable to try? I would be quite interested to
know if replacing the
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