Subject:
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Re: Rechargeable Battery question.
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 31 Jan 2003 13:27:34 GMT
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Original-From:
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Pete Hardie <pete.hardie@sciatl.=Spamcake=com>
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Viewed:
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1297 times
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Dan Novy wrote:
> 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
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.
--
Pete Hardie | Goalie, DVSG Dart Team
posting from, but not |
speaking for: |
Scientific Atlanta, Digital Video Services Group
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Message has 1 Reply:
 | | Re: Rechargeable Battery question.
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| (...) These toothbrushes work like ordinary transformers. A normal transformer consists of two inductances, one generates the magnetic field from a ac source and the other one generates ac from the magnetic field. In the toothbrush one inductance is (...) (22 years ago, 31-Jan-03, to lugnet.robotics)
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Message is in Reply To:
| | Rechargeable Battery question.
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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 (...) (22 years ago, 30-Jan-03, to lugnet.robotics)
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