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'Keep-Alive' Circuit For My Porters & Critters
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 Posted: Sat Apr 27th, 2019 07:54 pm
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Helmut
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Woodie's idea is the best anyway, as the caps don't need less space than a decent battery.



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 Posted: Wed May 1st, 2019 02:51 pm
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man7sell
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Cost of all the receivers I'd need might prove a little hi, plus the batteries,
and still have to find out where to hook them up.

Now if I could run normal DCC on the rest of my trains and only 'dead rail' my critters......

Well anyway, I did manage to hook up my first capacitor 'keep-alive',
and did a test run on a 0-4-2 sound DCC Porter, and it ran seamlessly.

Have to download a video.

Also need to set the CV, I think 10, to '0' for the DC use,
because when I turn off power, the loco wants to go about 8" down the track on it's own.

Toots its whistle too ;)




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 Posted: Wed May 1st, 2019 02:59 pm
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man7sell
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Hookup to a DCC sound 0-4-2 is easier, and here is on with my hi tech camera mount.







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 Posted: Wed May 1st, 2019 03:09 pm
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slateworks
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Very neat set-up Paul.

I have an equally "high-tech camera mount,
but in my case, involving a bit of double sided sticky tape!










I'm waiting for some decent spring/summer light, before trying mine out!




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 Posted: Wed May 1st, 2019 03:15 pm
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man7sell
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Love it, nice scene too.



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 Posted: Wed May 1st, 2019 03:25 pm
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man7sell
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Video test of the keep alive.

https://youtu.be/arM4SlFrtCM



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 Posted: Wed May 1st, 2019 03:29 pm
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slateworks
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Great - no hesitations.



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 Posted: Fri May 3rd, 2019 12:47 pm
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Si.
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Hi Paul  :wave: :dt:



Very neat & sooooper compact wiring on your DIY 'Keep-Alive' !  :thumb:

(yes, perhaps smaller resistors next time !)

Well worth 'doing it oneself'.  :)



Those Million $$$ super-capacitors, from expensive RS, Digikey & Mouser etc. ...

... are just pennies, from China on eBay.  :cool:



Those commercial 'Keep-Alives' must have gold-bars inside them !!  :shocked:  ;)



:!::!::!::!::!:



Si.




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 Posted: Fri May 3rd, 2019 01:01 pm
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Si.
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These   1.5 Farad 2.7 Volt   'super-capacitors' cost me £1.49p inc. P&P on eBay !  :thumb:


... More Info. & a LINK > > >



:brill:



Si.




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 Posted: Fri May 3rd, 2019 02:09 pm
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man7sell
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Si. wrote:


These   1.5 Farad 2.7 Volt   'super-capacitors' cost me £1.49p inc. P&P on eBay !  :thumb:


... More Info. & a LINK > > >



1.5 Farads should be a great keep-alive storage, mine are only 1 Farad so you should get 50% more :brill:

Good price too.

I got all my components from an online electronics supplier here.

Still a little more than yours on eBay.

Paul




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