|
Posted by Mark Lloyd on July 9, 2006, 2:58 pm
On Sun, 09 Jul 2006 12:46:18 -0500, Richard Thoms
>Dottie wrote:
>> We installed a GE water softener recently. Today we had to turn off
>> the circuit breaker for reasons not related to the water softener ....
>> anyway, when we turned it back on I went out to adjust the clock on the
>> water softener .... and it still had perfect time. There is no mention
>> in the manual of a battery backup and I don't remember us putting a
>> battery in....so does anyone know about these? Can't find anything
>> about it on FAQs or DIY. Thanks.
>
>I think sometimes the microprocessors (or more accurately the circuit
>board) contain a small battery just for saving settings and clock time,
>etc. Or maybe even a small capacitor does the job. Sounds like you
>found a nice and unexpected feature. It's things like that that make you
>remember and recommend those products.
If you're talking about a clock, you need a timebase as well as a
power supply. Nice to have an accurate one. I've found many to be off
(usually fact). They can be cheap RC circuits.
--
Mark Lloyd
http://notstupid.laughingsquid.com
"Democracy is two wolves and a lamb voting on what
to have for lunch. Liberty is a well armed lamb
contesting the vote." - Benjamin Franklin
| 
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML Sitemap