Subject:
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Re: RCX and batteries
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 25 Nov 2002 23:06:32 GMT
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Viewed:
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947 times
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"Nick Tarleton" <nickptar@mindspring.com> wrote:
> Bluey wrote: • [cut & pasted]
> > In lugnet.robotics, Nick Tarleton writes:
> > > If you have a 1.0 RCX, use a power adapter when you can. 9-12V, any
> > > polarity will do, even AC. I use a 12V, 500mA, negative-tip adapter • from -
> > > hehe - a K'Nex set. • [here it is]
> > are you sure any polarity will work?
> > does it have a rectifier(I think this is what I mean) built into the • port?
> >
> I'm not sure, but it does have a voltage regulator, and I've *heard* it
> works even with AC. (BTW, a rectifier meaning a single diode blocks • current
> going the wrong direction. A 4-diode rectifier bridge converts AC to
> constant DC.)
A 4-diode rectifier bridge converts AC to DC (and will sort out polarity
problems), but it's not constant voltage DC (it's both halves of the AC sine
wave above the axis, like the side view of a box of eggs). You need at the
very least an additional capacitor to smooth that out to something
approximating a constant voltage.
Tim
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Message is in Reply To:
 | | Re: RCX and batteries
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| -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 (...) I'm not sure, but it does have a voltage regulator, and I've *heard* it works even with AC. (BTW, a rectifier meaning a single diode blocks current going the wrong direction. A 4-diode rectifier (...) (22 years ago, 25-Nov-02, to lugnet.robotics)
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