Use the power supply of the telephone network

[billie]

Hello everybody

I come back from a long absence on this forum with a question ...
Some time ago, I got a cordless telephone, a very practical gadget, the base of which is powered by a transformer on the 220 v which is not great. I also have a wired device that works with the only current from the telephone network and I say to myself that here:
could the weak current of the telephone network be diverted to supply my wireless base or another low consumption device which must remain connected at all times?

Wouldn't that save energy?
Pure fantasy but you never know ...


On the transformer, I read:
AC / DC adapter
input 230V ~ / 50Hz / 30mA / 6,9VA
Output 1: 8V = (continuous symbol) / 250mA
Output 2: 6,5V ~ / 95mA

If someone has an idea...

merci!

[gegyx]

Wouldn't that save energy?
Pure fantasy but you never know ...

Do you want to save energy, or your wallet?

If you want to keep fantasizing ...

Download a large file in Adsl, and recover the electricity from the bits in megahertz ...

[zac]

Pure fantasy but you never know ...

Hello

Yes (I took the test 20 years ago when I was in the telecom).
the central fuses are some milliamps.
so you will instantly blow them up, you will have no juice and no more phone

@+

[bobono]

Of course it can work

The power supply to the transformer is 220 volts AC '(EDF networks)

There are two outputs on the transformer. 8 volts direct = must be used to recharge the battery of the mobile handset. the 6 volts ALTERNATIVE must be used for the power supply of the base. but the base works in fact continuously the current is rectified before use.

[elephant]

The telephone lines deliver a direct voltage 48 to 52 volts, in open circuit.
when we pick up, we apply (theoretically) a load of 600 ohms, there is a voltage drop and it delivers 5 (sometimes less) at 15 volts (rare)
You should also know that when the telephone rings, the PTT send an alternating voltage of around one hundred volts (this is why it rings: this voltage can then pass through a capacitor to supply the ringer)

conclusion:

it is doubly uncivil (pcq the performance would be bad and that it is not regulatory)
it's source of emm .....
you risk breaking your circuits.

so:

forget!

[Former Oceano]

I think everything is said on the subject.

It is not saving energy or improving an energy source, it is misappropriation of electricity with trouble.

The subject is therefore closed, both literally and figuratively.

[Christophe]

I allow myself to unlock and add a post to simply share a little personal experience: one of our phone (simple model from philips with small B&W lcd screen) has a double power supply: by battery and / or by the residual voltage of the telephone network.

The display is stronger with the battery than with the voltage of the network but if the big manufacturers do it, it is because it is tolerated to use a "very small part" of this electricity.

[Christophe]

Billie shared the following remark with me:

It really bothers me to pass for a profiteer who wants to hijack the collective good!

My concern was almost the opposite: to use an "existing" power supply without over-adding a permanent EDF consumption and a loss of energy (power supply which heats, conversion ...) for a punctual use, not to make savings on the back of the taxpayer or to supply my house with the energy of the telephone.

So my conclusion is that I will keep a corded phone! "