Subject:
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Re: LDCC and Boosters
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Newsgroups:
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lugnet.trains
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Date:
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Tue, 24 Jun 2003 18:40:37 GMT
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Viewed:
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1201 times
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In lugnet.trains, Mark Riley wrote:
> "Tom Cook" wrote:
> > I tried running two LDCC RCX bricks in parallel to gain more current. It was
> > not a success. I'm assuming phasing issues and conflicting commands are to
> > blame.
>
> Yes, the phase of the signals would have to be tightly in sync
> to make this work.
I'm wondering how you could possibly get the signals synced closely enough for
this to work without a physical cable connecting the two RCX internals
(clocks??? I dunno). What is the cycle timing on these compared to instruction
clock rate? Even being off by 1% would, I would think, cause pretty good surges
of current, ne?
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Message has 1 Reply:
 | | Re: LDCC and Boosters
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| (...) It was (...) are to (...) for (...) instruction (...) surges (...) The CPU instructions can be anywhere from 1/8 to 1 microsecond (or longer) in duration. Assuming you could sync up to within 1us, you'd still be off by ~2% since the pulse (...) (21 years ago, 24-Jun-03, to lugnet.trains)
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Message is in Reply To:
| | Re: LDCC and Boosters
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| (...) to (...) use a (...) you (...) connecting (...) I haven't really looked at commercial DCC boosters, but I have been looking at the various homebrew designs on the net. Haven't gotten past the "contemplation" phase, though. :-) (...) was (...) (...) (21 years ago, 24-Jun-03, to lugnet.trains)
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