>
>> >> >> When we did that we could hear virtuallu hundreds
>> >> >> of relays clickking off held by residual magnetism.
>> >
>> >Well he "says" it was residual magnetism. I guess we have to
>> >believe somehow he knows that's what it was, and not weak
>> >springs or other mechanical problems.
>> >
>> Because the relay stopped hanging up when I reversed polarity.
>
>You were there Rich? When did you work for the telephone
>company in Europe?
? Mr. Rauch plays the Duhhh Card.
>
>> >That's right. With a weak enough spring, the relay won't have any
>> >return force.
>> >
>> The relay did not hang up after I reversed the magnetic field.
>
>You were there?
>
? The sticking relay was in one of my amplifiers.
>
>> >But if the iron is soft it should also have no flux storage.
>
>> All types of iron can be magnetized.
>
>Depends on how much you mean by magnetized.
? magnetized enough to cause the relay to stick.
> Certainly all iron
>materials have ability to retain SOME amount of magnetism, but
>with proper material selection and treatment it can be negligible in
>applications like relays.
You said "no (magnetic) flux storage".
>
later, Tom.
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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