View single post by Helmut
 Posted: Sat Feb 13th, 2021 02:06 pm
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Helmut



Joined: Sun Feb 17th, 2013
Location: Friedberg, Germany
Posts: 1289
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We are talking DCC here,
where the bridge-rectifier acts as the power supply for the decoder,
which in turn governs the motor's speed AND direction.

So the 'Keep-Alive' MUST be attached to +V of the onboard bridge-rectifier,
via that resistor/diode charge/discharge arrangement,
and its minus to the -V of the bridge-rectifier.

Easiest way to do this is the tantalum capacitor's -V tab.
(seems that every decoder has one)




____________________
Regards, H.
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