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Subject: Re: 3V DC back-up power!
Organization: Chariot Internet - http://www.chariot.net.au
Date: Fri, 01 Nov 2002 18:46:13 +1030
NNTP-Posting-Date: Fri, 01 Nov 2002 19:19:15 EST
No. This is specifically a power supply that can easily be used as a
back up to system functions like an RTC, it accepts most battery
configurations as input, and will sustain the ouput at 3.3V as the
battery ages. The board is designed to run a variety of other modules
using various combinations of 1 lithium cell, 2 silver oxides or even 2
AA cells as it's input. It's output is MUCH more than is typically
needed for an RTC back-up, in fact I use it as the main power supply for
many desings. The 1A module runs from a single silver oxide battery in
> Are you talking about the BASIC stamp? I've got that too...however,
> it is the BSI. I got this to start learning about microcontrollers.
> Very interesting stuff...apparently you can do almost anything with
> this. My problem is that I do not know the BASIC language...quite
> familiar with C++, but not BASIC. If you know of a site that will
> teach BASIC from the bottom up, please let me know!
> Otherwise, I have started to design my own circuit for the 3V back-up
> power supply. I've started out with relays, capacitors, and
> resistors, but I think I will require transistors in place of the
> relays. Now, I am more inclined to think it can be done with a BASIC
> stamp. It could be easy depending on how well I get to know the
> Thanks for the input! And please, once again, if you know how or
> where I can learn BASIC for free let me know.
> onestone wrote in message news:<3DBFE0D4.49CCAAAE@chariot.net.au>...
> > I have a postage stamp sized module that takes 2.4V to 5.5V in and
> > outputs 3.3V at up to 150mA. It has self healing fuse, reverse polarity
> > protection, and a shutdown pin if you're interested. I have a similar
> > module that takes 0.7V to 5.5V in and can output up to 1A at 3.3V. The
> > second board can be modified for 3V out. How you tie it into the clock
> > depends upon which clock you are using. Other than that there are plenty
> > of build it yourself options that I know of.
> > Al
> > firstname.lastname@example.org wrote:
> > >
> > > I'm looking for a product that will provide 3V DC output from a
> > > lithium battery in the case when main power dies. The device has to
> > > have the capability to be tied into an existing item such as a clock
> > > (to keep it alive during a power outage).
> > >
> > > Thanks
> > >
> > > P.S. - I am not looking for diodes and components to make this
> > > thing...just asking if there is a product for sale out on the market.
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