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'Keep-Alive' Circuit For My Porters & Critters

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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: Fri May 3rd, 2019 12:47 pm

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Si.
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Hi Paul

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

(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.

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 !

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

:brill:

Si.

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 !

... 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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Posted: Tue May 14th, 2019 06:27 pm

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man7sell
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Forgot to set the DC mode off.

This is what happens when you remove power from the track.

Funny

https://youtu.be/1yyVVMhrb6Q

Paul

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Posted: Thu May 16th, 2019 08:04 am

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Helmut
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Quite logical.

When CV29 bit2 is set,
the decoder checks the input for DC-level,
when there is no DCC signal.

As the DC input is zero,
the motor power signal is set to zero accordingly,
and stops the loco.

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Posted: Sat Feb 6th, 2021 03:30 pm

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Stan S
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Have you ever added a Keep-Alive to a non-sound Bachmann Porter?

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