🚀 go-pugleaf

Seems that not many know the phone electrical specs?  The phone is a 600 ohm
resistor that is placed across the line when it goes off hook.  The line runs
48 volts (plus or neg depending on orientation) when everything is on hook.
This is a DC voltage and it drops when hones are put off hook.  The ringing
voltage is 96 volts AC at 20 Hertz.  This adds to the DC measurement to make
a peak value of almost 150 volts while its ringing.  There is a current limit
on what the line can provide.  I'm not sure what it is but you know how all
these machines you can connect have a value on the bottom and the sum shouldn't
exceed 100 (at least where I live)  This is the current total that can be
provided by the line.  The phone company says it is illegal to stick non FCC
approved devices on the line (and for good reason) but if you isolate your
devices electrically they don't mind.  I'm sure that if they found out people
were recharging batteries and running motors off it they would have a fit.
I'm not telling you not to do it.  Just don't tell me you are and don't get
caught.

>>Jerry   (jeremi@bode.ee.ualberta.ca)