haylin1217
New Member
this is my homework..
One of my mentors asked me this question and yet, i haven't figured out the answer to this question..
Why is -48 V most preferred as a power supply for telecom and telephone lines? and why negative supply? What's the reason behind it?
Any suggestions?
thanks for any help..
One of my mentors asked me this question and yet, i haven't figured out the answer to this question..
Why is -48 V most preferred as a power supply for telecom and telephone lines? and why negative supply? What's the reason behind it?
Any suggestions?
thanks for any help..