Subject:
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110 VAC powered lego motors
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Newsgroups:
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lugnet.org.ca.rtltoronto
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Date:
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Tue, 26 Feb 2002 23:41:49 GMT
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Viewed:
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453 times
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in some other thread, Mathias said:
> since the
> motor power is unregulated in the RCX, is a function RCX input
> voltage, which, in turn, is a function of Hydro line voltage.
I don't follow this.
if 110 VAC (or some amount) goes in, it drops down to 9 (ish) i know
for a fact that the RCX does not have a transformer, so the regulation
has to be solid state.....
ergo, somewhere in the brick, there has to be 9vdc
even if the motor outs was unregulated, it would still (logically) run
off the 9vdc.
what am i missing?
Chris
Pretend I learned all my electronic smarts from that green radio shack
book by Forrest M Mimms III
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Message has 2 Replies:
 | | Re: 110 VAC powered lego motors
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| Wall current is not the same everywhere. It is not even always the same over time. I measured my wall voltage once, and it was 117. Now it's 120. Most wall wart adapters drop the voltage by a specific amount, so if the designers of a 9v adapter were (...) (22 years ago, 27-Feb-02, to lugnet.org.ca.rtltoronto)
| | | Re: 110 VAC powered lego motors
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| (...) It's two "t"'s Mr. Mango :-) (...) My point here is this: I was using the Lego train transformer, which is just that: a transformer (10:1 ie. 120VAC in yields 12VAC out - no regulation, no filtering) If the voltage at the wall drops 8.3% (...) (22 years ago, 28-Feb-02, to lugnet.org.ca.rtltoronto)
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Message is in Reply To:
| | Re: Guess what.
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| (...) Welcome to the club. As of thursday night, mine was running the anti-x in about 29 seconds - some patterns in 27 seconds, although, my robot doesn't do a pre-scan and therefore has to search every square in the X, there isn't a lot of (...) (22 years ago, 26-Feb-02, to lugnet.org.ca.rtltoronto)
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