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Subject: Re: 3V DC back-up power!
Date: 1 Nov 2002 12:05:48 -0800
References: <3DBFE0D4.49CCAAAE@chariot.net.au> <3DC2384D.892C985F@chariot.net.au>
NNTP-Posting-Date: 1 Nov 2002 20:05:48 GMT
1) Does this device have the capability of recharging the battery
when the main power comes back?
2) Also, do you have pictures, drawings, and performance
specifications that I'd be able to look at?
3) If you're selling these devices, what is your price and delivery
time, and in what quantity are they available?
onestone wrote in message news:<3DC2384D.892C985F@chariot.net.au>...
> 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
> many applications.
> email@example.com wrote:
> > 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
> > language.
> > Thanks for the input! And please, once again, if you know how or
> > where I can learn BASIC for free let me know.
> > Andy
> > 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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