Using Power from Phone Line to Power BS2
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Posts: 46,084
I am working on a project with the Basic Stamp 2 and the modem, and I
want to provide power to the BS2 and Modem from the power in the
phone line. Can this be done and if so does anyone know how the
circuit would be constructed. Any comments would be welcome.
want to provide power to the BS2 and Modem from the power in the
phone line. Can this be done and if so does anyone know how the
circuit would be constructed. Any comments would be welcome.
Comments
gets connected to their lines, and if you use something other than an
approved DAA you may suffer their rath....
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
Original Message
From: tracenet2000 [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=cO55nDxbW4hMgU9NMxJ0R7m5iNY6RsEYaYIXOSTSfuxaL6yfu_jjQGQlFvnT4jQVU8vRNoJY5qlUAFuTqe8]jbooraem@b...[/url
Sent: Sunday, February 01, 2004 11:28 AM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Using Power from Phone Line to Power BS2
I am working on a project with the Basic Stamp 2 and the modem, and I
want to provide power to the BS2 and Modem from the power in the
phone line. Can this be done and if so does anyone know how the
circuit would be constructed. Any comments would be welcome.
view of your using their lines to power
your equipment. That's what we have
power companies for.
Note the phone line can be quite challenging.
The 'ring' signal is 48 volts AC.
--- In basicstamps@yahoogroups.com, "tracenet2000" <jbooraem@b...>
wrote:
> I am working on a project with the Basic Stamp 2 and the modem, and
I
> want to provide power to the BS2 and Modem from the power in the
> phone line. Can this be done and if so does anyone know how the
> circuit would be constructed. Any comments would be welcome.
handle 700 volts, as sometimes the telco will put this across the lines to
heat them up when they get covered in ice. I was told this by a NYNEX (Now
Verizon) service tech a few years ago.
Good Luck,
Alan Bradford
Plasma Technologies
In a message dated 2/1/2004 1:34:06 PM Eastern Standard Time,
jwilliams@p... writes:
Keep in mind that the telecom companies are very sensative about what
gets connected to their lines, and if you use something other than an
approved DAA you may suffer their rath....
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
Original Message
From: tracenet2000 [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=EPvz-TYB-H2JgImMO43LPym2J8nMQg8AOtud7wTdbHhMGu9XWthXVsEnO0n11SYgn_VVYef6h9n60hB1SQ]jbooraem@b...[/url
Sent: Sunday, February 01, 2004 11:28 AM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Using Power from Phone Line to Power BS2
I am working on a project with the Basic Stamp 2 and the modem, and I
want to provide power to the BS2 and Modem from the power in the
phone line. Can this be done and if so does anyone know how the
circuit would be constructed. Any comments would be welcome.
[noparse][[/noparse]Non-text portions of this message have been removed]
If your ckt is not hungry, you can charge a supercap and get power later
from it.
Original Message
From: "Allan Lane" <allan.lane@h...>
To: <basicstamps@yahoogroups.com>
Sent: Sunday, February 01, 2004 6:16 PM
Subject: [noparse][[/noparse]basicstamps] Re: Using Power from Phone Line to Power BS2
> I think the phone company would take a dim
> view of your using their lines to power
> your equipment. That's what we have
> power companies for.
>
> Note the phone line can be quite challenging.
> The 'ring' signal is 48 volts AC.
>
> --- In basicstamps@yahoogroups.com, "tracenet2000" <jbooraem@b...>
> wrote:
> > I am working on a project with the Basic Stamp 2 and the modem, and
> I
> > want to provide power to the BS2 and Modem from the power in the
> > phone line. Can this be done and if so does anyone know how the
> > circuit would be constructed. Any comments would be welcome.
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
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>
>
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>
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>
>
>
>
(Ringer Equivalents). Anybody know what amperage one RE represents?
At 8:03 PM -0300 2/1/04, Pedro Drummond wrote:
>Ring signal is 96V AC, while on-hook voltage is 48V DC.
>If your ckt is not hungry, you can charge a supercap and get power later
>from it.
>
--
Chuck Britton Education is what is left when
britton@n... you have forgotten everything
North Carolina School of Science & Math you learned in school.
(919) 416-2762 Albert Einstein, 1936
It is not our business to steal power or ideas from legit sources.
> I think the phone company would take a dim
> view of your using their lines to power
> your equipment. That's what we have
> power companies for.
>
> Note the phone line can be quite challenging.
> The 'ring' signal is 48 volts AC.
>
Actually, it's acceptable -- just a pain in the...
Back when PC's were big clunky things we had a client that wanted a PC built
into a telephone. This bank wanted to woo customers with the option of
online banking before the days of the Internet made alternative approaches
more practical and convenient.
The trick is the "ringer equivalence" rating for the device. Details escape
me at this distance in time, but I seem to remember that the regulatory
rules specify how many "ringer equivalent loads" can be placed on a
residential line, a business line, and so forth. Something like that. In any
case, it's a straightforward technical problem, just a paperwork hassle
getting the approvals for the final design. It's amazing how much current is
considered "nominal" when you're dealing with rules written around very old
analog equipment.
Again, it's been too long, but we were going to power a PC clone motherboard
off the line without expecting anything but routine bureaucratic problems
getting approval. And this was not a recent low-power clone we're talking
about either...
All that technical ease aside, I also remember that the fines for doing all
this without regulatory approval were daunting. So I'd just grab a wall wart
like most designers do.
Gary
enough power to do so. The greatest problems likely to be encountered is
that there is only really power there when the phone rings, and you do not
want to interfere with voice.
Original Message
From: "Allan Lane" <allan.lane@h...>
To: <basicstamps@yahoogroups.com>
Sent: Sunday, February 01, 2004 4:16 PM
Subject: [noparse][[/noparse]basicstamps] Re: Using Power from Phone Line to Power BS2
> I think the phone company would take a dim
> view of your using their lines to power
> your equipment. That's what we have
> power companies for.
>
> Note the phone line can be quite challenging.
> The 'ring' signal is 48 volts AC.
>
> --- In basicstamps@yahoogroups.com, "tracenet2000" <jbooraem@b...>
> wrote:
> > I am working on a project with the Basic Stamp 2 and the modem, and
> I
> > want to provide power to the BS2 and Modem from the power in the
> > phone line. Can this be done and if so does anyone know how the
> > circuit would be constructed. Any comments would be welcome.
>
>
> 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.
>
>
> Yahoo! Groups Links
>
> To visit your group on the web, go to:
> http://groups.yahoo.com/group/basicstamps/
>
> To unsubscribe from this group, send an email to:
> basicstamps-unsubscribe@yahoogroups.com
>
> Your use of Yahoo! Groups is subject to:
> http://docs.yahoo.com/info/terms/
>
>
>
wrote:
> I am working on a project with the Basic Stamp 2 and the modem, and
I
> want to provide power to the BS2 and Modem from the power in the
> phone line. Can this be done and if so does anyone know how the
> circuit would be constructed. Any comments would be welcome.
Thank you for the input and I think I will supply my own voltage to
the project. I just wanted to look at all possible ways to power the
BS2. Again thanks for your help.
10 to 20 ma or more and this would load the line to
an "off-hook" condition.
Telephone lines are typically 48vdc 20ma. current loops, the signal that a
device is in the "off-hook" state is when the current
draw causes the voltage to drop to 32vdc or less which occurs at less than 10ma.
KF4HAZ - Lonnie
Original Message
From: "Joshua Simmons - CK" <simmonsj2000@h...>
To: <basicstamps@yahoogroups.com>
Sent: Monday, February 02, 2004 8:00 AM
Subject: Re: [noparse][[/noparse]basicstamps] Re: Using Power from Phone Line to Power BS2
> Many telephone related appliances are line powered, when they use little
> enough power to do so. The greatest problems likely to be encountered is
> that there is only really power there when the phone rings, and you do not
> want to interfere with voice.
>
>
Original Message
> From: "Allan Lane" <allan.lane@h...>
> To: <basicstamps@yahoogroups.com>
> Sent: Sunday, February 01, 2004 4:16 PM
> Subject: [noparse][[/noparse]basicstamps] Re: Using Power from Phone Line to Power BS2
>
>
> > I think the phone company would take a dim
> > view of your using their lines to power
> > your equipment. That's what we have
> > power companies for.
> >
> > Note the phone line can be quite challenging.
> > The 'ring' signal is 48 volts AC.
> >
> > --- In basicstamps@yahoogroups.com, "tracenet2000" <jbooraem@b...>
> > wrote:
> > > I am working on a project with the Basic Stamp 2 and the modem, and
> > I
> > > want to provide power to the BS2 and Modem from the power in the
> > > phone line. Can this be done and if so does anyone know how the
> > > circuit would be constructed. Any comments would be welcome.
parasitizing phone lines. It's fun to fool around with,
but for real world apps uaually more trouble than it's
worth.
regards, Jack
> I am working on a project with the Basic Stamp 2 and the modem, and I
> want to provide power to the BS2 and Modem from the power in the
> phone line. Can this be done and if so does anyone know how the
> circuit would be constructed. Any comments would be welcome.
I agree. Besides in this country, the voltages on the phone line are,
48V dc for the on hook circuitry, and the ringer voltages are 96-110
AC. And the 48V dc is also used as a Talk circuitry voltage as well.
Acceptable DAAs are typically made by Clare, and several others.
Gregg C Levine hansolofalcon@w...
"The Force will be with you...Always." Obi-Wan Kenobi
"Use the Force, Luke."· Obi-Wan Kenobi
(This company dedicates this E-Mail to General Obi-Wan Kenobi )
(This company dedicates this E-Mail to Master Yoda )
>
Original Message
> From: Pedro Drummond [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=sU3mJJ5LEo00_55-1b5ImlJL3Jd1p0iPPwxFemKJxTJivqjwDc_C8AUY1C_bFxIHW2vhkWkcxoCqHAE]prd@d...[/url
> Sent: Monday, February 02, 2004 1:12 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] Re: Using Power from Phone Line to Power
BS2
>
> No one is stealing power or ideas from no one. Phone lines are a
path to the
> world right on the wall, near each one of us. Too important to be
neglected
> when talking about electronics.
>
> If you respect phone line limits, which are imposed by telephone
companies
> (and supported by law), you are designing seriously and will get
approval.
>
>
>
>
Original Message
> From: "Albert Catano" <acatano2002@y...>
> To: <basicstamps@yahoogroups.com>
> Sent: Sunday, February 01, 2004 11:54 PM
> Subject: Re: [noparse][[/noparse]basicstamps] Re: Using Power from Phone Line to Power
BS2
>
>
> > I think this or other group should discourage this type of help.
> > It is not our business to steal power or ideas from legit sources.
> >
> >
world right on the wall, near each one of us. Too important to be neglected
when talking about electronics.
If you respect phone line limits, which are imposed by telephone companies
(and supported by law), you are designing seriously and will get approval.
Original Message
From: "Albert Catano" <acatano2002@y...>
To: <basicstamps@yahoogroups.com>
Sent: Sunday, February 01, 2004 11:54 PM
Subject: Re: [noparse][[/noparse]basicstamps] Re: Using Power from Phone Line to Power BS2
> I think this or other group should discourage this type of help.
> It is not our business to steal power or ideas from legit sources.
>
>
> 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.
>
>
> Yahoo! Groups Links
>
> To visit your group on the web, go to:
> http://groups.yahoo.com/group/basicstamps/
>
> To unsubscribe from this group, send an email to:
> basicstamps-unsubscribe@yahoogroups.com
>
> Your use of Yahoo! Groups is subject to:
> http://docs.yahoo.com/info/terms/
>
>
>
>
hook drops to around 9v yes with a diode to rectify
and block the ac ring voltage it will all depend on
how many devices are connected to the line ma bell
only lets you have so much current before you kill
the line plus if the resistence goes to hi there
it goes good luck [noparse]:)[/noparse]
--- Gregg C Levine <hansolofalcon@w...>
wrote:
> Hello from Gregg C Levine
> I agree. Besides in this country, the voltages on
> the phone line are,
> 48V dc for the on hook circuitry, and the ringer
> voltages are 96-110
> AC. And the 48V dc is also used as a Talk circuitry
> voltage as well.
> Acceptable DAAs are typically made by Clare, and
> several others.
>
> Gregg C Levine hansolofalcon@w...
>
> "The Force will be with you...Always." Obi-Wan
> Kenobi
> "Use the Force, Luke."· Obi-Wan Kenobi
> (This company dedicates this E-Mail to General
> Obi-Wan Kenobi )
> (This company dedicates this E-Mail to Master Yoda )
>
>
>
> >
Original Message
> > From: Pedro Drummond [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=q2qXvsWfPsYkX8huZKjlm0wYHJTYw5eqKHgZEJ3TLQE44_PpGgFip_qZH-GZOXBQgx_lAiIRq_CU]prd@d...[/url
> > Sent: Monday, February 02, 2004 1:12 PM
> > To: basicstamps@yahoogroups.com
> > Subject: Re: [noparse][[/noparse]basicstamps] Re: Using Power from
> Phone Line to Power
> BS2
> >
> > No one is stealing power or ideas from no one.
> Phone lines are a
> path to the
> > world right on the wall, near each one of us. Too
> important to be
> neglected
> > when talking about electronics.
> >
> > If you respect phone line limits, which are
> imposed by telephone
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