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(...) I think you've missed the point slightly. We are talking about 9 volt controllers and power supplies to the unit. The STANDARD power supply for the 9 volt controllers is 12 VOLTS AC! It turns it into DC 9 VOLTS inside the unit. When your using (...) (23 years ago, 22-Oct-01, to lugnet.trains)
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(...) One might think that the settings (based on 9v max) are 1.5, 3, 4.5, 6, 7.5, and 9, but they aren't. I cannot remember where the scale starts on the speed controller, but I think it is around 3V. Below that setting (3V?), there just isn't (...) (23 years ago, 22-Oct-01, to lugnet.trains)
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(...) You're right, I didn't understand the specifics, and this is why I'm not an electrical engineer. So, to summarize, the wall wart that plugs into the wall reduces 120v of AC electricity from the wall to 12v AC. Then, the train controller (...) (23 years ago, 22-Oct-01, to lugnet.trains)
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(...) You are right. I think it's 2.9 volts or there abouts. Anything less and it's too low. Inside is just mis matched resistors. As you turn the knob up it just pulls more of them out of the circuit. Dean (23 years ago, 24-Oct-01, to lugnet.trains)
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(...) My solution was to add a resistor over them (picture later). Yes the lowest is 2.9V. By adding a resistor over them all makes i affect the higher settings more than the lower ones. This is right for less that 2.9V is not enough for the motor (...) (23 years ago, 25-Oct-01, to lugnet.trains)
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(...) Well, I want to modify mine to output a constant 9V for powering technic motor gadgets (e.g. point motors). I've just got some polarity switches, and I want to fit them on my controller. I've been advised to wire up my own 9V regulator with a (...) (23 years ago, 26-Oct-01, to lugnet.trains)
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| | Re: Does anyone know how to modify a train controler?
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(...) I use the standard, unmodified, train controller for technic. Just have it at max power and you have 9 volts. Dean (23 years ago, 26-Oct-01, to lugnet.trains)
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(...) And you also have trains all over the floor, if you happen to have just the one controller. Thank you, but I'll take it under advisement :-) The point is that you take off a steady 9V and feed it into a bank of polarity switches. These then (...) (23 years ago, 26-Oct-01, to lugnet.trains)
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(...) Sigh, I meant use a SECOND 9 volt Regulator, NOT the same one your controlling the trains with. Geez... (...) Two controllers works just fine. (...) If you mean do I crash trains all the time, sadly yes, but it's not my fault! Dean (23 years ago, 27-Oct-01, to lugnet.trains)
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(...) If you're into trains you have these controllers coming out of your ears. If you're not, post in market.buy-sell-trade and you can get one for about 1/2 the LEGO price. May or may not be competitive with homebrew. But I don't see homebrew (...) (23 years ago, 27-Oct-01, to lugnet.trains)
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| | Re: Does anyone know how to modify a train controler?
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(...) Turned out pretty simple in the end, and a lot cheaper than a second-hand controller. I had to make do with 8V, as it was the only regulator I could get. But, it takes power from inside the standard controller, so only steps down from 15V to (...) (23 years ago, 27-Oct-01, to lugnet.trains)
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(...) If you're not devoting at least 100 ft**2 to your layout, your priorities are wrong. :-) Who needs sleeping space or a dining room anyway? I've been to the UK, don't try to shine me on... it's not THAT small. I saw Huw's layout at the fest at (...) (23 years ago, 28-Oct-01, to lugnet.trains)
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(...) I know. I was there too. You bought me a bag of chips and they mucked up the order, remember? You may even have quaffed some of my Belgian cherry beer. Huw's got a great layout. Unfortunately I don't have a spare room in the flat I can devote (...) (23 years ago, 29-Oct-01, to lugnet.trains)
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(...) You're just whinging. Get a bigger flat. Or get rid of the bed. Priorities, man... priorities! OK, I will stop now. But I WILL say this, I had LEGO in EVERY ROOM of my temporary apartment in Detroit. (23 years ago, 29-Oct-01, to lugnet.trains)
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