[cctalk] Re: reset "pulse" stretcher need

On 12/7/2022 11:28 AM, Mike Stein via cctalk wrote: Sadly, no relay at all. Since I was afraid of being off topic on the list, I hesitated to annoy folks with too much detail, but it's unfair to those helping, so my apologies. The device in question is a 1960's era NuTone 8 note door chime (doorbell). I don't know the exact model, but here are some links to similar units: https://www.youtube.com/watch?v=kbOVmMVrSTg http://northsideforyourhome.squarespace.com/nutone-vintage-door-chime/nuton… I admit I grew up in a later period and I have lived under a rock for part of my life, so I did not know such cool devices were once sold. If you can excuse the terrible narration, I put a small video together to go over the unit, since I'd never seen such a cool piece of kit before (living under the rock, so to speak). https://youtu.be/HhGMhiAjmRU The motor in question is a 3.6RPM "clock" motor, as far as I can tell.  It runs the "program", and the front doorbell switch engages the motor momentarily to start the process. I came upon this slice of home ownership by way of my sister and brother in law, who hosted thanksgiving at their "new to them" home, which looks to have not been renovated since it was built in the early 1970's.  This chime, in addition to an 8 room NuTone intercom system, are installed in the home to this day.  All of us think the system is impressive and must be kept in the home.  It actually took us a while to find this, as I offhandedly commented we had to knock on the door since the lighted doorbell didn't seem to do anything, which prompted BIL to note they had lived there for a month and had yet to find the door bell in the home (the lighted front button heavily suggested in operating unit somewhere).  We finally found it in the entryway, disguised as a part of the Intercom system (made by the same company).  We were unsuccessful in diagnosing the issue in the moment, but I was able to take the unit home to work on it. As the video notes, I was able to determine and address the immediate issue, but I notice the timing issue I wanted to solve it before returning the unit.  The video was mainly to explain to my sister and BIL what had been wrong with the unit. Given the nature of the unit, the switch has to remain a NO SPST, and I'd really prefer to not rewire the switch and disconnect it from the 24VAC, since some buttons assume they are being driven with 24VAC.  I also prefer not to make any non removable changes to the unit.  I figured adding something to the terminals is easily removeable and thus fair game. It works as-is, but I can see people tapping the button too fast and then my BIL deciding to replace the unit after annoying friends or missing packages. Jim -- Jim Brain brain(a)jbrain.com www.jbrain.com