[RE: [basicstamps] OP AMP -/+ Power]
Archiver
Posts: 46,084
The Harris/Intersil series 7660CPA might work for your application. You can
check the Jameco web site for more information. I don't know if you'd need
more filtering to suppress ripple.
http://www.jameco.com/cgi-bin/ncommerce3/ProductDisplay?prmenbr=91&prrfnbr=1925&\
cgrfnbr=501&ctgys=
http://www.jameco.com/Jameco/Products/ProdDS/51174.pdf
"Al Williams" <alw@a...> wrote:
> Have a look at http://www.wd5gnr.com/opampneg.htm
>
> Al Williams
> AWC
> * NEW: PAK-VIa - Read PS/2 keyboards or mice -- double the buffer, lower
> current consumption.
> http://www.al-williams.com/awce/pak6.htm
>
>
>
>
> >
Original Message
> > From: Bob Phillips [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=HIpIwyB7LN-xj_My7iaVI5Y4uowPWoQYBJBJULTGCmkci0X5aHNn673urgFaWxkNRCjJC1LT]robertp@v...[/url
> > Sent: Sunday, March 09, 2003 1:36 PM
> > To: basicstamps@yahoogroups.com
> > Subject: Re: [noparse][[/noparse]basicstamps] OP AMP -/+ Power
> >
> >
> > Is it possible to supply a op amp with negative and postive
> > voltage from one 12 volt battery. I belive a +6V and -6V
> > would work, is their a circuit that would split the voltage ??
> >
> > I have my prototype running on two 9 volt batteries and now
> > to get a +9 V
> > and -9 V
> >
> >
> >
> > Bob Phillips
> >
> >
> >
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the
> > Subject and Body of the message will be ignored.
> >
> >
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> >
> >
>
>
> To UNSUBSCRIBE, just send mail to:
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>
check the Jameco web site for more information. I don't know if you'd need
more filtering to suppress ripple.
http://www.jameco.com/cgi-bin/ncommerce3/ProductDisplay?prmenbr=91&prrfnbr=1925&\
cgrfnbr=501&ctgys=
http://www.jameco.com/Jameco/Products/ProdDS/51174.pdf
"Al Williams" <alw@a...> wrote:
> Have a look at http://www.wd5gnr.com/opampneg.htm
>
> Al Williams
> AWC
> * NEW: PAK-VIa - Read PS/2 keyboards or mice -- double the buffer, lower
> current consumption.
> http://www.al-williams.com/awce/pak6.htm
>
>
>
>
> >
Original Message
> > From: Bob Phillips [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=HIpIwyB7LN-xj_My7iaVI5Y4uowPWoQYBJBJULTGCmkci0X5aHNn673urgFaWxkNRCjJC1LT]robertp@v...[/url
> > Sent: Sunday, March 09, 2003 1:36 PM
> > To: basicstamps@yahoogroups.com
> > Subject: Re: [noparse][[/noparse]basicstamps] OP AMP -/+ Power
> >
> >
> > Is it possible to supply a op amp with negative and postive
> > voltage from one 12 volt battery. I belive a +6V and -6V
> > would work, is their a circuit that would split the voltage ??
> >
> > I have my prototype running on two 9 volt batteries and now
> > to get a +9 V
> > and -9 V
> >
> >
> >
> > Bob Phillips
> >
> >
> >
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the
> > Subject and Body of the message will be ignored.
> >
> >
> > Your use of Yahoo! Groups is subject to
> > http://docs.yahoo.com/info/terms/
> >
> >
> >
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
Comments
capacitors. I ran some distortion tests comparing use of the LT1026
and some Linear LT1014 and TI TLC2274 opamps, comparing results with
my regular Lambda opamp power supply versus driving the LT1026 with a
9 volt battery. the distortion was 0.100% compared with 0.003% with
the Lambda.
If you are in a pinch, you can always cheat off a MAX232 and obtain
+/- voltages.
It's not ripple, it's switching noise btw.
--- In basicstamps@yahoogroups.com, Fred Kerr (usa.net) <fkerr@u...>
wrote:
> The Harris/Intersil series 7660CPA might work for your
application. You can
> check the Jameco web site for more information. I don't know if
you'd need
> more filtering to suppress ripple.
>
> http://www.jameco.com/cgi-bin/ncommerce3/ProductDisplay?
prmenbr=91&prrfnbr=1925&cgrfnbr=501&ctgys=
>
> http://www.jameco.com/Jameco/Products/ProdDS/51174.pdf
>
> "Al Williams" <alw@a...> wrote:
> > Have a look at http://www.wd5gnr.com/opampneg.htm
> >
> > Al Williams
> > AWC
> > * NEW: PAK-VIa - Read PS/2 keyboards or mice -- double the
buffer, lower
> > current consumption.
> > http://www.al-williams.com/awce/pak6.htm
> >
> >
> >
> >
> > >
Original Message
> > > From: Bob Phillips [noparse][[/noparse]mailto:robertp@v...]
> > > Sent: Sunday, March 09, 2003 1:36 PM
> > > To: basicstamps@yahoogroups.com
> > > Subject: Re: [noparse][[/noparse]basicstamps] OP AMP -/+ Power
> > >
> > >
> > > Is it possible to supply a op amp with negative and postive
> > > voltage from one 12 volt battery. I belive a +6V and -6V
> > > would work, is their a circuit that would split the voltage ??
> > >
> > > I have my prototype running on two 9 volt batteries and now
> > > to get a +9 V
> > > and -9 V
> > >
> > >
> > >
> > > Bob Phillips
> > >
> > >
> > >
> > >
> > >
> > > To UNSUBSCRIBE, just send mail to:
> > > basicstamps-unsubscribe@yahoogroups.com
> > > from the same email address that you subscribed. Text in the
> > > Subject and Body of the message will be ignored.
> > >
> > >
> > > Your use of Yahoo! Groups is subject to
> > > http://docs.yahoo.com/info/terms/
> > >
> > >
> > >
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the
Subject and
> Body of the message will be ignored.
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >