I guess the duration depends on how long the gravity arm takes to reset? I would imagine that different clocks would have small differences, maybe power supplied, type of reset arm, strength of coils,

I was puzzled about why the first two images posted in jpg and the third in heic. I posted all by dragging the image from “photos” into the e mail being written. I think probably the reason may

.heic, is a much more compressed format,about half the size of a JPG which still produces full quality images. A bit like jpg was to bmp. here is a screenshot of heic vs. jpg. I expect microsoft will

It was taken (the photo) on an iPhone and mailed via a Mac. For some reason, the first two photos (all 3 were taken today) appear as photos, the third as a .heic file. The purpose was to illustrate

.heic ? You a mac or ipad too! YAY! (opened for me!) -- Simon GPO Clocks http://www.lightstraw.uk/gpo/clocksystems/index.html

> On 17 Mar 2021, at 09:34, John Hubert via groups.io <jfphubert@...> wrote: > > <IMG_2523.heic>

The third and final trace is a ’triangle movement’ Synchronome, running alone with a standard slave movement. The duration here is 35.6 mS The triangle movement is slightly different to the

Trace 2 is a later clock, running alone and having No 1 (i.e. small) slave movement. This clock also has a seconds switch, though that is an entirely separate circuit. The duration is 89 mS (again

Here are 3 oscilloscope captures - which shows how much the impulse duration can vary. Trace 1 is an early clock running a largeish system via a distribution board. Despite the master movement

Ive done this already Darren, using an Atmega, and a P FET driver. Just make the pulse width a variable in your software. Ill have a lookntokorrow snd see how many ms i ended up with. Neil. Nz

Hi Darren, Have you thought of buffering the synchronome pulse with a monostable circuit? There are two benefits from doing this; you get a repeatable clean pulse as your input and you can set the

Hi I am making an Arduino interface between a Synchronome master clock, slave clocks and a slave Solidine Cifra 12 flip clock that requires a bi-polar 48V pulse. Does anyone know

Over in the Files section there is a copy of the Elliott Isaacs articles on building a 'Nome including instructions for fabricating a pallet. I have also made a couple (with modified shape to conform

It's also worth noting that, in answer to an earlier query regarding the backstop roller, the text describes putting "a head on it" before passing the wire through the glass bead and then bending it

I was going on holiday so just posted Hope-Jones’ drawing of an impulse pallet for Naing. Now I have attached the two pages where the text refers to it as that may be some help. I believe that

Gents recommended a maximum of 60v for a Pulsynetic system before using multiple loops and a distribution board. Andy

Some years ago I made (and still use) some constant current units. The design is from the LM317 application notes. Details attached;

James, I would be very surprised if you have to consider the change in circuit resistance due to temperature, I don't think this will vary to any appreciable degree. The inductance will

I have a Synchronome master (no. 2750) with only its internal slave dial connected. It runs off 3 alkaline (non-rechargeable) 'C' cells. They are in a 3 cell holder on a little shelf in the top

with suitable resistance you can use any voltage but sadly you will have to start sticking those yellow high voltage warning labels over the clock those old style christmas tree lights