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PICList Thread
'Battery Charge'
1997\06\02@013028 by Pablo

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Hi
I'm looking for an IC, or app note about charging a lead-acid
battery. I must use the less components I can and to make it
really cheap. I'm using a 68HC68 RTC that can control and manage
switching betwen VCC and battery because it has a Power Sense
circuit. Can I use this feature of the RTC for this application?.
I'll appreciate any help.
Thanks in advance,
Pablo Mochcovsky

1997\06\02@040706 by tjaart

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Pablo wrote:
>
> Hi
> I'm looking for an IC, or app note about charging a lead-acid
> battery. I must use the less components I can and to make it
> really cheap. I'm using a 68HC68 RTC that can control and manage
> switching betwen VCC and battery because it has a Power Sense
> circuit. Can I use this feature of the RTC for this application?.
> I'll appreciate any help.
> Thanks in advance,
> Pablo Mochcovsky

AN626 has both lead-acid and NiCd. Very good app-note.

--
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Tjaart van der Walt
spam_OUTtjaartTakeThisOuTspamwasp.co.za
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1997\06\02@050250 by Keith Dowsett

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At 02:26 02/06/94 ARG, you wrote:
>Hi
>I'm looking for an IC, or app note about charging a lead-acid
>battery. I must use the less components I can and to make it
>really cheap. I'm using a 68HC68 RTC that can control and manage
>switching betwen VCC and battery because it has a Power Sense
>circuit. Can I use this feature of the RTC for this application?.
>I'll appreciate any help.
>Thanks in advance,
>Pablo Mochcovsky

Float charging or cyclic charging?

So far as using the minimum number of components I read somewhere on the
Microchip site about a new 12C67x series chip with an ADC on board. Add a
few resistors, 78L05, and a high current FET (or two) and off you go.

Perhaps someone from Microchip can enlighten us about when the 12C671 & 672
will be hitting the streets?

Keith.


==========================================================
Keith Dowsett         "Variables won't; constants aren't."

E-mail: .....kdowsettKILLspamspam@spam@rpms.ac.uk
  WWW: http://kd.rpms.ac.uk/index.htm

1997\06\02@100838 by Ben J. Dasher III

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Unitrode makes an IC (UC3906) which is a very good lead acid / gelcell
smart
battery charger. This IC requires a minimum of parts, and takes care of all
of
the battery charging functions. My ham radio club is currently using this
IC in
an on-line charger for our club repeater. I do not know what unitrode's web
site
address is, but  their telephone number is 603-429-8725, they are located
in
Merrimack, NH USA. Hope this helps.

Ben Dasher
Micro Computer Consultants
Atlanta, GA
Email bendasherspamKILLspamcompuserve.com

1997\06\02@150922 by Daniel

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-----Original Message-----
From:   Ben J. Dasher III [SMTP:.....BenDasherKILLspamspam.....COMPUSERVE.COM]
Sent:   Monday, June 02, 1997 6:56 AM
To:     EraseMEPICLISTspam_OUTspamTakeThisOuTMITVMA.MIT.EDU
Subject:        Battery Charge

Unitrode makes an IC (UC3906) which is a very good lead acid / gelcell
smart
battery charger. This IC requires a minimum of parts, and takes care of all
of
the battery charging functions. My ham radio club is currently using this
IC in
an on-line charger for our club repeater. I do not know what unitrode's web
site
address is, but  their telephone number is 603-429-8725, they are located
in
Merrimack, NH USA. Hope this helps.

Ben Dasher
Micro Computer Consultants
Atlanta, GA
Email bendasherspamspam_OUTcompuserve.com


Unitrode www page:

       http://www.unitrode.com

They have a new set of databooks coming out in a few weeks.


Daniel
Eagle Designs Corporation
Tel 503 492 2370    Fax 503 667 9613
@spam@infoKILLspamspameagledesigns.com

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