Author: Phil AllisonDate: 20:38 31-03-08
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"Jon Slaughter"
>
> What are the components that are coils of wire that are used like an
> inductor but are wound on the same bobbin/core?
** The name is " common mode choke" - Google it.
The basic idea is the same AC current passes via both windings, but in
opposite directions, so the core is not magnetised by it. Avoids core
saturation.
Allows a small component to pass large AC supply currents while still
filtering RF noise generated inside the load device.
....... Phil
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Author: Jon SlaughterDate: 20:40 31-03-08
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What are the components that are coils of wire that are used like an
inductor but are wound on the same bobbin/core?
I took a part a dsl filter and I'm trying to determine what the things are.
Are they inductors or transformers?
The circuit treams them as inductors instead of tranformers in the sense of
ther orientation. (there is no isolation) I assume this has to do only with
noise issues rather than anything with power transfer.
e.g.
---()()()()----
In Out
---()()()()----
instead of
---( )---
) (
in ( ) out
) (
---( )---
The way I see it is that its just two inductors wound on the same core and
probably just for noise issues that its done that way?
In any case, what is the technical term for it?
Thanks,
Jon
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Author: JamieDate: 20:40 31-03-08
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Jon Slaughter wrote:
> What are the components that are coils of wire that are used like an
> inductor but are wound on the same bobbin/core?
>
> I took a part a dsl filter and I'm trying to determine what the things are.
> Are they inductors or transformers?
>
> The circuit treams them as inductors instead of tranformers in the sense of
> ther orientation. (there is no isolation) I assume this has to do only with
> noise issues rather than anything with power transfer.
>
> e.g.
>
> ---()()()()----
> In Out
> ---()()()()----
>
>
> instead of
>
> ---( )---
> ) (
> in ( ) out
> ) (
> ---( )---
>
>
> The way I see it is that its just two inductors wound on the same core and
> probably just for noise issues that its done that way?
>
> In any case, what is the technical term for it?
>
> Thanks,
> Jon
>
>
Maybe a common mode choke ?
http://webpages.charter.net/jamie_5";
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Author: Jon SlaughterDate: 01:47 01-04-08
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"Jamie" <jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote in
message
news:PqfIj.45$lU4.42@newsfe02.lga...
> Jon Slaughter wrote:
>
>> What are the components that are coils of wire that are used like an
>> inductor but are wound on the same bobbin/core?
>>
>> I took a part a dsl filter and I'm trying to determine what the things
>> are. Are they inductors or transformers?
>>
>> The circuit treams them as inductors instead of tranformers in the sense
>> of ther orientation. (there is no isolation) I assume this has to do only
>> with noise issues rather than anything with power transfer.
>>
>> e.g.
>>
>> ---()()()()----
>> In Out
>> ---()()()()----
>>
>>
>> instead of
>>
>> ---( )---
>> ) (
>> in ( ) out
>> ) (
>> ---( )---
>>
>>
>> The way I see it is that its just two inductors wound on the same core
>> and probably just for noise issues that its done that way?
>>
>> In any case, what is the technical term for it?
>>
>> Thanks,
>> Jon
> Maybe a common mode choke ?
>
>
Looks like it might be that.
Thanks,
Jon
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