On Sat, 26 Sep 2009, Peter Harrison wrote:
> On Sat, Sep 26, 2009 at 8:29 AM, Matthew Minuti <>
> wrote:
>>
>>
>>> The DC power supply is vital, as I'm running off 12v, and part of the
>>> attraction
>>> of the 7260 is the acceptable voltage range and low power.
>>>
>> Maybe a simple voltage conversion circuit can help? The LM7805 is a
>> handy little device, even if it's not the most efficient possible
>> solution, it's easy enough to use.
>
> Inefficient alright - from 12v to 5v it would waste over 50% power, not to
> mention heating the regulator. My project is a small solar powered boat
> which will need to operate 24 hours a day. Low power consumption was
> the primary reason I got this particular board.
For powering my TS7200 from a "12V" Lead Acid battery, I purchased a little
switchmode PSU module that substitutes for a 7805, and has a wide input
voltage range. The part is PT5101 from Powertrends. I bought mine from
Farnell here in the UK. It will supply upto 1 amp and they claim efficiency
of over 90% at an input voltage of 16v
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