kingfisher24 Posted June 27, 2016 Share Posted June 27, 2016 all i have been thinking about getting one of the sfx10 sound modules for a while and whilst at perth i picked one up. it was promptly tested and works a treat but..... i plan on putting the capsule into my kit built nbr c16 atlantic tank and the loco is a pain to dismantle. i am wondering if it would be possible to make ''it'' so that the sound capsule was powered from the pickups. i trained in mechanical engineering so electrics are not really my thing. the steam sound module is powered by a 3v battery and cannot be powered by anything bigger. would it be possible to use some sort of resistor between the pick-ups and the sound capsule?? gary p Link to post Share on other sites More sharing options...
cliff park Posted June 27, 2016 Share Posted June 27, 2016 What you need is a 3V zener regulator circuit. Easy enough, but where would you fit it ? Link to post Share on other sites More sharing options...
Gordon H Posted June 28, 2016 Share Posted June 28, 2016 You need to determine how much current the module takes before selecting a suitable circuit for voltage regulation. If it turns out to be 1A or less, you could use one of these regulators (from RS in this case): http://uk.rs-online.com/web/p/low-dropout-voltage-regulators/6695162/ There are higher current versions too: http://uk.rs-online.com/web/p/low-dropout-voltage-regulators/7239839/ Link to post Share on other sites More sharing options...
cliff park Posted June 28, 2016 Share Posted June 28, 2016 I notice that both of those modules specify maximum input of 6 volts. That could be a problem. Link to post Share on other sites More sharing options...
Gordon H Posted June 28, 2016 Share Posted June 28, 2016 Quite right! In my haste at lunchtime I overlooked the input voltage range. This one is a bit more like it: http://uk.rs-online.com/web/p/low-dropout-voltage-regulators/2639852/ Link to post Share on other sites More sharing options...
RAF96 Posted June 29, 2016 Share Posted June 29, 2016 You could modify a stock wagon /box van to contain the module to tow behind the tank loco. Fitting pickups would be a doddle using ESUs ready made wheel scrapers or even DCC Concepts axle springs or make your own. The regulator quoted above would knock down track voltage to a suitable safe value. Link to post Share on other sites More sharing options...
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