RSS Fetcher Posted November 26, 2013 Share Posted November 26, 2013 <span style='font-family: comic sans ms'>Hi</span><br /><br /><span style='font-family: comic sans ms'>Since the last blog entry I have wired the scenic board, in similar fashion to the fiddleyard board. I have also wired both boards together at both track crossing points. Some people may say that this is over the top!</span><br /><br /><span style='font-family: comic sans ms'></span><br /><br /><span style='font-family: comic sans ms'>But I remember from electronics at college, that if you have 2 resistors of value R and you connect them in series then the total resistance is 2R. However if you connect them in parallel the total resistance is 1/2R instead.</span><br /><br /><span style='font-family: comic sans ms'>The main power bus is single core wire, whilst the links are multi-core cable. This allows the cable in the links to bend without damaging it. But the cable has slightly higher resistance than the solid core cable.</span><br /><br /><span style='font-family: comic sans ms'>The programming switch is arranged so that when the switch points towards the programming track, the programming track is selected, and therefore when it points away from it, the main is selected.</span><br /><br /><span style='font-family: comic sans ms'></span><br /><span style='font-family: comic sans ms'></span><br /><br /><span style='font-family: comic sans ms'>Now after the track over the joints has been fettled, I can turn my mind back to the task of doing the scenery again.</span><br /><br /><span style='font-family: comic sans ms'>Julie</span> View the full article Link to post Share on other sites More sharing options...
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