i just moved into a new house and there was a payphone in the house.it was broken when i moved in.but the landlord gave me the key to the phone box to fix. i fixed it but nobody uses the phone box.
so what i was think was that there is 50V DC and 50mA coming out of the line into the house.if i could make a step down transformer to step the voltage down 4V and that would step up the amps to over 500mA. this is what comes out of phone charger in to a mobile phone.
so i would be able to charge a mobile phone for free.
does anyone see any problems that i might in counter
the only problem is if someone calls on the phone line 80V to 70V AC signal is sent down the line to make the ring sound and the telephone so that might affect my transformer.
can anyone give me any advice
so what i was think was that there is 50V DC and 50mA coming out of the line into the house.if i could make a step down transformer to step the voltage down 4V and that would step up the amps to over 500mA. this is what comes out of phone charger in to a mobile phone.
so i would be able to charge a mobile phone for free.
does anyone see any problems that i might in counter
the only problem is if someone calls on the phone line 80V to 70V AC signal is sent down the line to make the ring sound and the telephone so that might affect my transformer.
can anyone give me any advice