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Charge a battery through a nonconductive material?

J

John Doe

Jan 1, 1970
0
I just added another low end electric toothbrush (Oral-B PowerMax) to
my collection.

It is rechargeable. As far as I can tell there are no metal contacts
on the outside of the toothbrush casing where it slips into the
charger, but it does charge.

Is it charging through a conductive surface that looks like plastic,
or is there some (practical) way to charge a battery through
nonconductive material?

Mainly curious.
 
R

Rheilly Phoull

Jan 1, 1970
0
John Doe said:
I just added another low end electric toothbrush (Oral-B PowerMax) to
my collection.

It is rechargeable. As far as I can tell there are no metal contacts
on the outside of the toothbrush casing where it slips into the
charger, but it does charge.

Is it charging through a conductive surface that looks like plastic,
or is there some (practical) way to charge a battery through
nonconductive material?

Mainly curious.
They use inductive coupling, ie 2 coils.
 
J

JazzMan

Jan 1, 1970
0
John said:
I just added another low end electric toothbrush (Oral-B PowerMax) to
my collection.

It is rechargeable. As far as I can tell there are no metal contacts
on the outside of the toothbrush casing where it slips into the
charger, but it does charge.

Is it charging through a conductive surface that looks like plastic,
or is there some (practical) way to charge a battery through
nonconductive material?

Mainly curious.

The charging base and the bottom of the toothbrush are two
halves of a transformer that pass A/C current.

JazzMan
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J

Jasen Betts

Jan 1, 1970
0
I just added another low end electric toothbrush (Oral-B PowerMax) to
my collection.

It is rechargeable. As far as I can tell there are no metal contacts
on the outside of the toothbrush casing where it slips into the
charger, but it does charge.

Is it charging through a conductive surface that looks like plastic,
or is there some (practical) way to charge a battery through
nonconductive material?

It's called induction it's the principle upon which transformers work,
while plastic won't pass electric curren it'll pass magnetic fields just
fine.

Bye.
Jasen
 
J

Jasen Betts

Jan 1, 1970
0
I just added another low end electric toothbrush (Oral-B PowerMax) to
my collection.

It is rechargeable. As far as I can tell there are no metal contacts
on the outside of the toothbrush casing where it slips into the
charger, but it does charge.

Is it charging through a conductive surface that looks like plastic,
or is there some (practical) way to charge a battery through
nonconductive material?
It's called induction it's the principle upon which transformers work,
while plastic won't pass electric curren it'll pass magnetic fields
just
fine.

Bye.
Jasen
 
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