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(...) Check the Linear Tech LT1083/4/5 series. They are pin compatible with the part that is already in the controller. LUCNY uses some of my modified controllers. You need to change; The bridge rectifer diodes to handle the chosen maximum current (...) (20 years ago, 5-Jan-05, to lugnet.trains)
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| | Re: Transformer Power
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(...) I'll have to look into that. I'm really not running the motors anywhere near their limit. The biggest single load is this train: (URL) at 1/2 speed, when the car is full of soccer balls. And, that's running off an RCX. Thanks for the info (...) (20 years ago, 6-Jan-05, to lugnet.trains)
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| | Modified Transformers Question (Re was: Transformer Power)
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(...) John, We had the luxury of using your controllers at the NMRA show (Thanks a ton!), and I am interested in modifiying my own. I think I've got enough information to swap the internal components, but negelected to look at the wallwart (power (...) (19 years ago, 18-Jul-05, to lugnet.trains, FTX)
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| | Re: Modified Transformers Question (Re was: Transformer Power)
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(...) The LM317 will need to "eat" more power if you supply a higher voltage and will thus kick in the thermal protection much sooner. I'd stay as close to the voltage the LEGO wallwart outputs as possible. (19 years ago, 18-Jul-05, to lugnet.trains)
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| | Re: Modified Transformers Question (Re was: Transformer Power)
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(...) I believe the Lego transformers are 12v a/c output. I used 12v a/c output 3.3A transformers from Digikey, part number T605. You will have to add your own connector. They are quite expensive, but they don't heat up as much as the cheap ones do. (...) (19 years ago, 18-Jul-05, to lugnet.trains, FTX)
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