Author Topic: Power Plants and ringing generators.  (Read 240 times)

Offline Babybearjs

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Power Plants and ringing generators.
« on: April 25, 2019, 12:08:17 PM »
 ;D well, as I am making changes to my system and the individual phones... I am reminded of the ringing generator on my 20B2 power plant. How were these put to use? were they used for general ringing through a dedicated relay, or just for the intercom? I'm thinking of introducing it into my system but am not sure of how and am concerned about a unfused load. (even though I can add a fuse...) since the phone line already had a ringing voltage, what would one use this for? I can see using it for bell testing.... other then that I'm not sure. someone give me some insight into how these were used in a 1A1 or 1A2 system.
John

Offline rdelius

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Re: Power Plants and ringing generators.
« Reply #1 on: April 25, 2019, 12:23:58 PM »
The incoming call on any line would trigger the common audible. The common audible could ring ringers if hooked up to a ringing generator or buzzers if the proper voltage power supply is used.

Offline Key2871

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Re: Power Plants and ringing generators.
« Reply #2 on: April 25, 2019, 01:29:51 PM »
The cadence is from the interrupted in New KSUs such as 551. I'm not sure with the 1A how that was done. I haven't looked at those in years.
KEN