T&N switching, was Solari Flip Clock Driver


Ian Richardson
 

Ernie,

In order to photograph the commutator switch, I will have to stop the clock and lift out the movement.  The commutator is mounted on the back board, but the spindle which drives it is part of the clock movement, so I'll endeavor to show both parts although I would assume that the part which is on the clock movement is still existing (or is it?).

I will do all this this weekend, assuming that you can wait a bit!

I have to confess that I have little or no understanding of all the microelectronic stuff - all my clocks run "as built".

Best regards,
Ian R



-----Original Message-----
From: Ernie Jenson via groups.io <erniejenson@...>
To: synchronome1@groups.io <synchronome1@groups.io>
Sent: Thu, 7 Jan 2021 21:09
Subject: Re: [synchronomeelectricclock] Solari Flip Clock Driver

Thanks Ian for the offer of pictures.  Thanks Thomas for the suggestion of the h-bridge circuit.  Since I have modefied the T&N to deliver a contact closure for 10 seconds every minute, I couldn't figure out how to make that work with out a micro controller to complete the operation.  I programed a micro controller but encountered problems with interference from the many master clocks in the room on the same circuit.  I programed and reprogramed and then decided that this was not the right way to go.  Whoever gets the clock after me will most likely not be able to maintain the circuit.  My choise was to buy another T&N to get the part and keep the clock original or build a replacement part that does the job in the manor that would have been used at the time the clock was new.  My first attemp at a mechanical device was also a failure.  I now need to look at the way that T&N solved the problem.  I have an ENEM master clock and their solution to the problem is far too complex.  I can't find another T&N to purchase.
Thanks for all the help, I really appreciate the effort.
Ernie