korm kormsen
Registered
- 24 Oct 2009
- 2,494
- 55
Yep, SPDT centre off momentary. This is not something I am planning in the short term, but just thinking ahead, dependant on what direction my railway takes me.
dunnyrail
DOGS, Garden Railways, Steam Trains, Jive Dancing,
That would work well for giving Indication of setting, though a Push Button for each Switch would be a necessary addition.
Jon, don't understand, how would it provide an indication, they are diodes not LEDs, also where would i put a push button switch?
dunnyrail
DOGS, Garden Railways, Steam Trains, Jive Dancing,
If the Switch were a normal Change Over one that could indicate which way the Switch were facing when Set, the Push Button could be either before or after the Switch to make the Circuit live. At all other times it would be dead beyond the Push Button. One would mount the switches on a Panel that either had a track diagram with the switches mounted so that the direction is obvious or like a Signal Box where the Main is always ‘Normal’ and if you Pull the Switch the other way the route is ‘Reversed’ I.E to the secondary direction. So for instance on your line where if I remember correctly part of the setup the following would be like a Signal Box.
Jon, the switch is a SPDT centre off momentary (none-latching) switch, so my understanding is the switch would return to the centre (off) position.
Correct Jimmy..
Jon is suggesting you use a latching (two-position) switch to 'set' the route, then the (in series) push-button to 'fire' the point..
You then have an indication of the route from the position of the switch toggle. - As long as you always 'set and fire'.
Does that help?
PhilP.
Jon is suggesting you use a latching (two-position) switch to 'set' the route, then the (in series) push-button to 'fire' the point..
You then have an indication of the route from the position of the switch toggle. - As long as you always 'set and fire'.
Does that help?
PhilP.
Phil (and Jon) I now understand, however to my simple mind this overly complicates things, and I don't do complicated electrics.
dunnyrail
DOGS, Garden Railways, Steam Trains, Jive Dancing,
Thanks Phil, not overly complex at all but the help that can be given from having a visible view of what Points and Signals are doing is a great help. The logic of it all is inescapable and for a little additional wiring certainly worthwhile, in fact if you are going to use Electric Motors the greatest part of the Wiring will be necessary anyway.
korm kormsen
Registered
- 24 Oct 2009
- 2,494
- 55
then you could do this.
http://kormsen.info/steering/bilder/epl-schaltung.JPG (forum still does not accept pics from my website. only those uploaded to the forum)
as simple as they come.
Last edited:
-
1 - Show all
korm kormsen
Registered
- 24 Oct 2009
- 2,494
- 55
Really? that is weird, do you have a really old computer or something strange? png has been around for a while...
(how did you know it was a png file?)
Per Wikipedia: PNG was published as informational RFC 2083 in March 1997 and as an ISO/IEC standard in 2004
Greg
(how did you know it was a png file?)
Per Wikipedia: PNG was published as informational RFC 2083 in March 1997 and as an ISO/IEC standard in 2004
Greg
korm kormsen
Registered
- 24 Oct 2009
- 2,494
- 55
i love this forum!
i went back, to copy the very long numerical .png URL, and what? i saw the pic.
and, yes, the sketch is the same, as mine is.
(but i think, we'll both survive that, won't we?)
i went back, to copy the very long numerical .png URL, and what? i saw the pic.
and, yes, the sketch is the same, as mine is.
(but i think, we'll both survive that, won't we?)
I'm more pleased that you don't have any difficulty loading png files.... that is good news.... perhaps it was just randomly very slow loading the first time?
i was racking my computer brain on how png files could be blocked...
good news as i take it.
Greg
i was racking my computer brain on how png files could be blocked...
good news as i take it.
Greg
dunnyrail
DOGS, Garden Railways, Steam Trains, Jive Dancing,
Yes this is a way to give a simple solution to changing points. But it does not give an indication without looking at the point which was my reason for the Change Over Switch and a Push Button. I have used a similar system to that shown above in smaller scales on Exhibition Layouts and find that Operators tend to overuse the Push Buttons to be sure that the route is set when there is no indicating Switch. Result - shorter life of Point Motors and Push Buttons.
I have experimented with DPDT centre off non locking switches, one side switches the points through diodes, as explained above, the other side switches 'flip-flop' circuits to light LED's. Both circuits work independently ( without power to the other circuit) but when used with 9 Volts on the LEd circuit and 14v ac on the motor circuit, when switching points, occasionally, the LED's. 'Jump about' . I am guessing there is interference on the dc circuit from the ac as the wiring runs in a loom, by necessity.
Unfortunately, I have reached the end of my electronics knowledge to fix the problem and am hoping, one day to meet an 'expert' who will just say " you need to.................." to fix it !
If I can get it working correctly, I have used red and green bright 5mm LED' , which show up well in bright sunlight, the result is that it is easy to set a route and have a visual indication , of that route.
Dave
Unfortunately, I have reached the end of my electronics knowledge to fix the problem and am hoping, one day to meet an 'expert' who will just say " you need to.................." to fix it !
If I can get it working correctly, I have used red and green bright 5mm LED' , which show up well in bright sunlight, the result is that it is easy to set a route and have a visual indication , of that route.
Dave
Jon's idea, with the "normal" spdt switch could be combined with a second circuit (like a 5v supply) that was isolated from the AC supply, and I believe you could drive LEDs from the position of the SPDT switch, giving turnout position BOTH from the toggle switch lever position and the LEDs. Maybe even something simpler with a bipolar led.
Greg
Greg
- 1
- Show all