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[edit: This is not a question about using capacitors with decoders.  It is a different application to see if capacitors can be used in a similar way to prevent drop out between power source and circuitry running at 12VDC] I know that many decoders and decoder applications involve installation of a capacitor to prevent current drop out in spots on track, and keep the decoder functions, sound especially, active. In the circuitry, are these capacitors installed directly in the pickup lead "from" the track "to" the decoder and thus providing continous current flow, or are they installed between the decoder and the speaker leads to provide the continuity? And if the direct line from track voltage to the electronic device like the decoder, what rating of capacitor could be used between 12VDC track and a 12VDC mini amplifier if at all possible?  Is it the same capacitor rating as used for a typical decoder on a 12VDC powered track? Thanks for any tips.
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