atcomsystems.ca/forum Forums General General Telephone & Systems Information old touch tone works in Colorado not in Florida

I never associated "bell tap" with polarity on "real telephones " (WE ,Ae ,SC, etc ) you would often see it on the imports as they came along and it was polarity sensitive with them

on "real phones" we would adjust the bias spring to eliminate it

I've never heard of polarity affecting a rotary dial

I remember Radio Shack selling a switch that would silence the ringer on a rotary dial (or any phone) that didn't have a kill switch.

When the unit was activated, the internal ringer(s) would "blip" in step with the spinning dial.

Yes. I first saw it on 500 sets. But it may not have been universal on all models and manufacturers. I seem to remember that it was the idle phones that were reversed that "dinged". Perhaps I could have just adjusted the bias spring as Skip says but I just corrected the polarity to stop it.

Skip along time ago in a galaxy far away, when W.E. remove buggy whips from there catalouge, I remember my station repair foreman showed us how to polarize the ring condinser to windinds of the bell. Bur obvislogy I'vw forgotten how.

As I recall, "bell tap" was a result of a bad capacitor.

But......

Notice the phrase "As I RECALL". Some days I'm lucky I recall who I am

Sam

what we where talking about again ?

I do remebr it being real common on the import "decorator " phones not so much and "real phones " and I don't ever recall it being polarity related....

I have heard the about the polarity/bell tap issue enough over the years to know it must be true, and I have seen it. I never knew why it was, but recently I heard an explanation that makes sense [I think it may have been here in The Forum].

If you look at a standard double-gong ringer [C type, F type, etc.], you will notice that when the clapper is at rest, it is against a stop. It can really only move in one direction off the stop, and if the polarity of the inductive voltage spikes caused by pulse dialing move it in that direction, it can tap. Reverse the connections of the bell coil, and the spikes will pull the clapper towards the stop, and it can't actually move [or tap].

As Skip said, usually just tweaking the bias spring will cure most cases of bell tap. Also, Most WE rotary dials had capacitors and/or varistors across the dial contacts to limit the spikes caused by pulse dialing.

Jim
**************************************************
Speaking from a secure undisclosed location.

:rofl: :rofl: :rofl:

lets not forget

"I reject your reality and substitute my own "

I love you Skip. Can we call a truce?
:toast: