 | | Rechargeable Battery question. —Dan Novy
|
| | | 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)
|
| | | |
| | | | | Re: Rechargeable Battery question. —Ken Hornstein
|
| | | | | (...) 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. —Mark H. Near
|
| | | | | | Investigate "induction". (...) Mark (NOTE NEW PHONE NUMBERS) Mark Harrison Near markn@scoca-k12.org LAN Manager 800.634.8828 x5300 (Toll Free) 740.289.5300 (Desk) 740.352.9141 (Cell) 740.532.7752 (Home) SCOCA MAIN INFO South Central Ohio Computer (...) (22 years ago, 31-Jan-03, to lugnet.robotics)
|
| | | | | | |
| | | | | Re: Rechargeable Battery question. —physics69
|
| | | | | (...) 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. —Steve Baker
|
| | | | | (...) 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. —Pete Hardie
|
| | | | (...) 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)
|
| | | | |
| | | | | | Re: Rechargeable Battery question. —Till Harbaum
|
| | | | (...) 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)
|
| | | | |
