On Mon, Sep 01, 2014 at 12:39:48PM -0700, Joe Zeff wrote:
On 09/01/2014 03:28 AM, Tim wrote:
>I was thinking in the other direction: That when mains power is
>available, the main supply powers the CMOS instead of the battery, to
>prolong its life.
Not only does the regular power supply run the CMOS, it recharges
the battery, which is why they last so long.
Actuaqlly,Ithink not. most boards I've seenin recent yearsuse a cr2032
lithium, a non-rechargeable battery. theyt last 5-8 years because
they're lithijum.
a couple decades ago I had some boards with a small-cad battery, which
one might think was a good idea, but in 3-5 years they leak all over
the circuitry, ruining the board and/or other components.
Fred
--
---- Fred Smith -- fredex(a)fcshome.stoneham.ma.us -----------------------------
But God demonstrates his own love for us in this:
While we were still sinners,
Christ died for us.
------------------------------- Romans 5:8 (niv) ------------------------------