The ring is a higher voltage
On 11/11/2015 10:48 AM, Jaime Solorza wrote:
i thought it was 56 not 90
Jaime Solorza
Wireless Systems Architect
915-861-1390
On Wed, Nov 11, 2015 at 8:45 AM, Chuck McCown <[email protected]
<mailto:[email protected]>> wrote:
Electrically speaking, back in olden times of party lines etc, the
ringer in the phone was connected between the ground and Tip or
Ring. So each phone had a red, green and yellow wire. Two wires
were not good enough. You needed the yellow ground wire or the
ringer would not work. On a two party line, one ringer would be
on tip to ground with the other ring to ground so each party only
heard their own ring. There were other methods of making you
only hear your own ring as well, frequency selective ringers were
a popular method.
With the ground wire broken and connected to the dog, the 90 VAC
20 Hz ringing current had to pass through the dog for the phone to
ring.
Two wire phones in use today use what is called bridged ringing
where the ringer is connected to tip and ring.
But I will bet that if you connected a phone or a ringer from ring
to ground it would still ring.
