Subject:
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Re: 12v train power
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Newsgroups:
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lugnet.trains
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Date:
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Wed, 16 Apr 2008 23:59:24 GMT
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Viewed:
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15648 times
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guho wrote:
> I have the Lego 7864 transformer, which I brought to US from Holland.
> I use it in
> conjunction with a 110V->220V transformer. This seemed to be going
> well and my 7740 was still working after all these years. Then
> suddenly the motor broke. I decided to measure the voltage as I also
> had the impression it ran much better than in my youth. Turns out the
> track got 16V. The transformer says it is for input of 220V. My wall
> socket here in New York has 123V so my 110->220V transformer puts out
> nearly 250V!
>
>
>
> Questions:
>
> - the 7864 was never sold in the USA; what do most ppl with 12V
> trains use as a power source here?
>
> - how much voltage is supposed to be on the track? Is it really only
> 12v or a bit more in case of no load and down in case of heavy load?
>
> - Should I buy another model train controller that puts out -12 to
> 12VDC or can I somehow modify the 7864?
Woa, bummer! I've used 740, 741, and 7864 transformers successfully in the
US with two different step up transformers. My 7864s came from the UK so I
wonder if that somehow factors in.
Frank
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Message has 1 Reply:
 | | Re: 12v train power
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| (...) Frank, good info, thanks! would you kindly read the bottom of your 7864, does it specify 240V? Mine says 220V 50/60Hz. if you can confirm that I will acquire a UK one. thanks so much! (18 years ago, 17-Apr-08, to lugnet.trains)
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Message is in Reply To:
| | 12v train power
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| I have the Lego 7864 transformer, which I brought to US from Holland. I use it in conjunction with a 110V->220V transformer. This seemed to be going well and my 7740 was still working after all these years. Then suddenly the motor broke. I decided (...) (18 years ago, 15-Apr-08, to lugnet.trains)
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