Subject:
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Rechargeable Battery question.
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 30 Jan 2003 21:53:23 GMT
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Original-From:
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Dan Novy <dan@AVOIDSPAMflashfilmworks.com>
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Reply-To:
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dan@&AntiSpam&flashfilmworks.com
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Viewed:
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1198 times
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Does anyone have any information about the rechargeable battery pacs
used in certain electric tooth brushes? They recharge in a cradle,
without any kind of metal contact. Does anyone know how these work,
where to get parts, or have plans for building your own? I'd like to
build a robot that can recharge itself just by parking in a "home"
position. Any info would be appreciated. Thanks
--
Dan Novy
Technical Supervisor
Flash Film Works
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Message has 4 Replies:
 | | Re: Rechargeable Battery question.
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| (...) When I looked at those before (because I was curious about them as well) they seem to have a coil of wire in the base unit and in the toothbrush, and it's basically a transformer. Unfortunately you'll probably need an AC/DC converter circuit (...) (22 years ago, 30-Jan-03, to lugnet.robotics)
| | | Re: Rechargeable Battery question.
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| (...) Question I have an electric toothbrush. Somehow, placing the plastic-handled brushing unit into a plastic holder/recharger will recharge the toothbrush unit. If no metal electrical contact is made, how can this recharge the toothbrush? Answer (...) (22 years ago, 30-Jan-03, to lugnet.robotics)
| | | Re: Rechargeable Battery question.
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| (...) I presume they are use some kind of inductive method. Put A/C current through a coil - and another coil placed nearby will pick up some of the current and - in principle - be able to recharge a battery. I have not idea whether that's what they (...) (22 years ago, 30-Jan-03, to lugnet.robotics)
| | | Re: Rechargeable Battery question.
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| (...) My guess (from the fact that the base of mine is magnetic) is that they use some form of inductance in the cradle to either move the brush's magnet and generate power, or just generate from the changing field across the magnet. (22 years ago, 31-Jan-03, to lugnet.robotics)
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