I have a schematic for getting 48 volts off the phone but ca

>"I don't know how to get pictures on this group. "

Get Dropbox. Not only will it host ANY file, not just pics but programs, videos and whatever, you can stick it on all your PCs and in the shared directory they will sync up. And there is private and public. Neither are searchable on the web either. You have to give out the URL or nobody will ever know. Except you of course...

 

>"And that would be really inconsiderate. "

Yes.

However a power outage is now considered an emergency since now we would freeze to death without power. I would say it owuld be bad to leave such a light on all the time so that the phones acrtually go dead. But in certain places at certain times, you gotta see the phone to use it, usually.

Of course with cellphones things have changed.

But then when the power goes out here mine couldn't get a signal. All I can figure is the towers it uses are on the same part of the grid. Doesn't really make sense but we live close to a major thoughofare. That might explain it along with some things about the terrain I don't know. A few years ago I had to go like three miles away to make a call. The LL was OK but we, all of us, have had problems with these longdistance companies and now only use cellphones for that. I caled my boss and he was wondering if I was still alive.

You know, lightning hit the transformer that day (and not the first time). I am surprised a bunch of things did not lose their smoke. Not even a lightbulb, but they DO have protection for that. And my amp was probably on so it went into my main filters in that.

Enough rant.

 

[John Fields]

On Wed, 18 Feb 2015 23:45:03 -0500, default <default@defaulter.net>
wrote:

On Wed, 18 Feb 2015 22:26:57 -0500, Michael Black <et472@ncf.ca
wrote:

On Wed, 18 Feb 2015, Lynn wrote:

On Monday, February 16, 2015 at 5:51:33 PM UTC-5, Lynn wrote:
I have a schematic for getting 48 volts off the phone but can't read the component sizes.

Anyone have it?

Regards

Lynn

I want it for a light when the power goes off..

And that would be really inconsiderate.

One of the great things about landline phones is that they are really
really dependable. The only problem comes if the actual wires get cut or
broken, otherwise they'll just keep on working.

They do that because the phone company has backup batteries and/or
generators, so when power goes down, the phone company keeps on ticking.

But, if everyone decided "the phone company is a great source of power
when the power goes off" then you defeat it all. The system is dependable
because the phone compeny carefully defines what can be attached to the
phone lines. If you start using it for power, you likely will burden the
system, especially if everyone else does it.

Be like the phone company, get your own spare batteries. INvest in a
small solar panel to charge them, make sure you are self-sufficient in the
event of a power black out (or at least able to run some flashlights and a
radio for a good period of time).

Michael

Except that Bell telephones had lighted dials in the 60's that were on
as long as the phone was wired up. They, apparently, weren't too
concerned with the small amount of power the light used.

---
That's because the power came form the AC mains.

http://en.wikipedia.org/wiki/Princess_telephone

John Fields

 

[P E Schoen]

"John Fields" wrote in message
news:655bealjv0epubl05d6sn5umdpmv7cvmnd@4ax.com...

On Wed, 18 Feb 2015 23:45:03 -0500, default <default@defaulter.net
wrote:

Except that Bell telephones had lighted dials in the 60's that were on
as long as the phone was wired up. They, apparently, weren't too
concerned with the small amount of power the light used.

That's because the power came form the AC mains.

http://en.wikipedia.org/wiki/Princess_telephone

I think you can draw as much as 10 mA from the phone line before the system
detects an "off-hook" condition and imposes a dial tone current. A short
will draw maybe 20 mA. So the maximum power is probably 24 volts and 10 mA
or 240 mW. That's enough for a fair amount of light from white LEDs. If only
used during a brief emergency, it might work, but eventually the phone
system will detect a certain level of current and will report a problem to
the TelCo, and it may cut the circuit entirely.

Paul

 

[default]

On Thu, 19 Feb 2015 01:46:50 -0600, John Fields
<jfields@austininstruments.com> wrote:

On Wed, 18 Feb 2015 23:45:03 -0500, default <default@defaulter.net
wrote:

On Wed, 18 Feb 2015 22:26:57 -0500, Michael Black <et472@ncf.ca
wrote:

On Wed, 18 Feb 2015, Lynn wrote:

On Monday, February 16, 2015 at 5:51:33 PM UTC-5, Lynn wrote:
I have a schematic for getting 48 volts off the phone but can't read the component sizes.

Anyone have it?

Regards

Lynn

I want it for a light when the power goes off..

And that would be really inconsiderate.

One of the great things about landline phones is that they are really
really dependable. The only problem comes if the actual wires get cut or
broken, otherwise they'll just keep on working.

They do that because the phone company has backup batteries and/or
generators, so when power goes down, the phone company keeps on ticking.

But, if everyone decided "the phone company is a great source of power
when the power goes off" then you defeat it all. The system is dependable
because the phone compeny carefully defines what can be attached to the
phone lines. If you start using it for power, you likely will burden the
system, especially if everyone else does it.

Be like the phone company, get your own spare batteries. INvest in a
small solar panel to charge them, make sure you are self-sufficient in the
event of a power black out (or at least able to run some flashlights and a
radio for a good period of time).

Michael

Except that Bell telephones had lighted dials in the 60's that were on
as long as the phone was wired up. They, apparently, weren't too
concerned with the small amount of power the light used.

---
That's because the power came form the AC mains.

http://en.wikipedia.org/wiki/Princess_telephone

I stand corrected. Looked up the schematic and there's a connection
labeled "transformer."

 

[amdx]

On 2/18/2015 7:49 PM, jurb6006@gmail.com wrote:

"I think the phone line is normally about 48 volts DC when ..."

My links cover that. Somewhat. It says 300 ohms, which would be 160 mA, but you'll never get that because the line trips and it drops.

I think the voltage is more like 7 volts, but that also drops when there
is more than one device picked up on the line.

That's one of the reasons the volue changes when someone picks up an
"extension" phone.

Of course "extension" is an old fashioned term, very few people whif landlines now only have one phone on the line.

I remember a long time ago around here it was illegal to hook up an "extension" phone. The reason ? Because the phone company

charged to install it and a monthly charge. Plus around here for a long time you didn't even buy phones, the phone company supplied them.

You paid extras per month for that trimline. Connecting your own phone to the line was technically theft of service.

Thank you Judge Green.
http://en.wikipedia.org/wiki/Harold_H._Greene

Mikek

 

[amdx]

On 2/18/2015 2:48 PM, default wrote:

On Mon, 16 Feb 2015 14:51:29 -0800 (PST), Lynn <greenone2@gmail.com
wrote:

I have a schematic for getting 48 volts off the phone but can't read the component sizes.

Anyone have it?

Regards

Lynn

Check out this guy
http://www.sandman.com/telco.html

"There's a lot of stress when the power is out!"

No worries, he sells a telco powered glow in the dark vibrator.

Mikek

 

[amdx]

On 2/18/2015 9:15 PM, Lynn wrote:

On Monday, February 16, 2015 at 5:51:33 PM UTC-5, Lynn wrote:
I have a schematic for getting 48 volts off the phone but can't read the component sizes.

Anyone have it?

Regards

Lynn

I want it for a light when the power goes off..

Lynn

Years ago there was a development they call a battery.
In following years the became more efficient, then, the actual
lighting device became much more efficient.
This will help.
http://www.amazon.com/s/ref=nb_sb_ss_i_1_11?url=search-alias%3Dtools&field-keywords=led%20lantern%20rechargeable&sprefix=LED+lantern%2Ctools%2C244

Mikek

 

[John Fields]

On Thu, 19 Feb 2015 10:07:37 -0600, amdx <nojunk@knology.net> wrote:

On 2/18/2015 7:49 PM, jurb6006@gmail.com wrote:
"I think the phone line is normally about 48 volts DC when ..."

My links cover that. Somewhat. It says 300 ohms, which would be 160 mA, but you'll never get that because the line trips and it drops.

I think the voltage is more like 7 volts, but that also drops when there
is more than one device picked up on the line.

That's one of the reasons the volue changes when someone picks up an
"extension" phone.

Of course "extension" is an old fashioned term, very few people whif landlines now only have one phone on the line.

I remember a long time ago around here it was illegal to hook up an "extension" phone. The reason ? Because the phone company

charged to install it and a monthly charge. Plus around here for a long time you didn't even buy phones, the phone company supplied them.

You paid extras per month for that trimline. Connecting your own phone to the line was technically theft of service.



Thank you Judge Green.
http://en.wikipedia.org/wiki/Harold_H._Greene

Mikek

---
TPC still uses chicanery to boost its bottom line. For example, if I
pay for caller ID, and someone else pays for caller ID blocking,
they don't deliver the service I paid for. Complain to the FCC?
Forget it unless you want to die.

 

You can block CID by dialing *67 before the number. If on pulse dialing it is 1167.

 

AND, if you have CID blocking for the whatever per month you can unblock by dialin *82 first. This can come in handy when ordering a pizza for example, and plus there are quite a few people who will not pick up a blocked call.. they'll llet it go to the machine for screening. I do. I don't pick up blocked numbers.

 

[Michael A. Terrell]

default wrote:

On Wed, 18 Feb 2015 17:39:53 -0800 (PST), jurb6006@gmail.com wrote:

"Need a zener or two to protect them
from the ring signal"

Can't do that, it'll make the line trip and you'll lose the call.

Then you got a light but not a phone. People will think you're hanging up on them.

That is incorrect I have both a light and the phone - as long as I
don't pull too much current from the line the telco CO sees the phone
as being on hook. and like someone already pointed out the "Princess"
telephone of the 60's had a dial that was backlit when the phone was
not in use.

When it rings the light flashes and is brighter.


Weren't some caller ID units line powered ? Maybe opt, maybe I imagined it, or was just unaware of the batteries.

What I was ruminating about is the fact that the buck switching
regulators are efficient, so I would expect them to make more current
available at a lower (more desirable) voltage. Instead of the 1
milliamp I'm getting at 48 volts, I should get 4 at 12 volts. (minus
the circuit losses of the switching converter)

The 18 leds I am using have a resistor for every three leds and was
designed for 12 volts. (series parallel with 6 dropping resistors) It
would automatically result in more light to put the 18 LEDs in series
run them at 36 volts and use one dropping resistor, but I was lazy and
it worked well enough to just use the ready-made light strip to light
the meters.

I just need to protect the regulator from the ring signal and if not a
zener that still leaves the possibility of an inductor to filter the
AC. (not that my phone rings - I stopped my phone service and only
use it for DSL these days, but I still have a phone number - that
can't send or receive calls - but I can use a dial up modem with it,
that still works)

http://en.wikipedia.org/wiki/Princess_telephone
The Princess telephone was introduced by the Bell System in 1959. It
was a compact telephone designed for convenient use in the bedroom,
and contained a light-up dial for use as a night-light. It was
commonly advertised with the slogan "It's little...It's lovely...It
lights"...

It also used a wall wart to power the lamp. They had a massive recall
at one time, because the things were starting house fires. The
cheapskate design had no fuse, and wasn't impedance protected.

They used the black and yellow wires to run the power to the phones.
They were normally used to run a second line on four conductor station
wire.


--
Anyone wanting to run for any political office in the US should have to
have a DD214, and a honorable discharge.

 

>" It also used a wall wart to power the lamp. "

If I remember right the earlier ones did but not some later ones, like tht touch tone ones. I think you're right about the rotary ones.

Now there wa s scam, touch tone dialing. Once the equipment was in it as in in most areas. You paid them by the month to NOT disable it. /the first advantage i saw to it was that someone picking up an "extension" phone would not screww up someone else dialing (literally) on another phone on the line..

And then, some of the earkier touch tone phones were polarity sensitive. Later, apparently they stuck a bridsge rectifier in it and solved that.

The kid, 21 year old friend of ours was down the basement a whie back and I have an ols rotary phone down there. I asked him if he knows how to work it. Claims he does but today thee kids only "dial" a phone number once, then it's "in their cell" or "in their phone".

Damn we had it rough. Yoou had to hit the gass pedal before starting the car to set the choke. Hell, now you don't even have to gt in the car to start it.

 

I swear there is something going on with this keyboard. I know it is kinda old but it almost seems like something wrong with the debounce or some such.