Gregi
Newbie level 4
![Newbie level 4](/styles/images/ranks/blevel1.gif)
Hi,
This is one hard question for me but maybe easy answer for someone else. I have power source from public pbx (telephone line) which is -48 volts and 0 volts. Its a Dc voltage. 0 volts is grounded. Is it possible to convert this voltage to positive 12 volts and how. I dont have any ideas.
This is one hard question for me but maybe easy answer for someone else. I have power source from public pbx (telephone line) which is -48 volts and 0 volts. Its a Dc voltage. 0 volts is grounded. Is it possible to convert this voltage to positive 12 volts and how. I dont have any ideas.