Author Topic: Grrr sleepers....  (Read 5467 times)

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Offline cabbage

Re: Grrr sleepers....
« Reply #60 on: Oct 31 2020 12:52 »
Having survived the week long hangover that is "changing the clocks" I think my system is back in tune with itself. Trying to solder when all you want to do is fall asleep is slight dangerous(!) I have got some of thw route lights connected but the problem is now down to the seven Vregs that produce the 3Volt lines to each battery of LEDs  on the mimic board.

The blue LEDs light at 2.6V the white ones at 2.8V. because the number of blue and white LEDS is different for each route the draw on each Vreg the brightness varies(!) This means twiddle and tweak on the multiple turn pots on each Vreg. (ugh!)

Still there is nothing else to do but watch the rain...

Regards

Ralph

Offline John Branch

Re: Grrr sleepers....
« Reply #61 on: Oct 31 2020 17:04 »
Ralph,
I have been following the CPR track relaying and signalling saga with some interest and a lot of admiration for fortitude in the face of  adverse metrological and other conditions. It was like one of those TV programmes where the narrator says "but will the signals light on the get together day?".  OK, the gtg has come and gone-any pics?
Best,
John

Offline cabbage

Re: Grrr sleepers....
« Reply #62 on: Jan 23 2021 15:40 »
Well after a massive cascade Vreg failure which removed all the working LEDs from the mimic board. I am pleased to announce that next week should see the completion of the board and I can concentrate on the external connectors -all ninety six of them....

regards

ralph

Offline cabbage

Re: Grrr sleepers....
« Reply #63 on: Jan 28 2021 12:10 »
After having to take a few days off the building of the mimic board because it fealt like my eyes were bleeding from the effort of trying to read 1/4w resistors...

I have been programming some new parts for the railway. I am going to construct a false OHL system based on British and Swiss methods. The straights are British and the curves are Swiss.

This is because the UK method of turning a corner would not survive even a moderate breeze here. The "visual aspect" is of a 1922 Pierson Report 1500V and 660V DC traction however none of it will work!!!

There will be a "Rotator house" to convert the AC to DC and supply it to the OHL and 3rd rail. I have been given a xerox of a genuine rotator and switch garden from Blackburn Starling - which I will attempt to use(!) The electrics as such will be from blue LEDs, which will flicker and flash.

And yes... The Rotator will have the makers plate:

ANGUS YOUNG &CO.

Regards

Ralph

Offline cabbage

Re: Grrr sleepers....
« Reply #64 on: Jan 28 2021 15:04 »
Ok before the eyes go again... Here is the mimic board showing route one. White LEDs are outward and Blue LEDs are return.





I now await the next delivery of LED holders...

Regards

Ralph