[Boatanchors] Making Stable Inductors for 2 MHz

[J. Forster]

Hi Steve,

I'll take a look at powdered iron. Thanks.

I'd really prefer not to mess with temp comp caps, unless absolutely
necessary.

Thank you,

-John

====================


>
> On Jun 28, 2011, at 9:20 PM, J. Forster wrote:
>
>> The frequency stability requirement is not great... about +/- 5 KHz, but
>> this is larger than can be achieved with ferrite cores I've looked at,
>> which are > 0.05% / deg. C.
>
> I'm no expert, but isn't the conventional wisdom to use iron toroids
> rather than ferrite for oscillator tank inductors, for exactly this reason
> of temperature stability? It might also require a temperature compensating
> cap of the correct tempco.
>
> Best regards,
> -Steve
> --
> Steve Byan <stevebyan at me.com>
> Littleton, MA 01460
>
>
>
>
>