Hello Chris,

two hours to Hawaii tsunami time (HTT).

I have Always Heard that semiconductors
are current devices where vacuum tubes are
voltage devices.

If this is true wouldn't one large conductor
like a bar of copper be better in
a magnetic field creating a flow
of current than many turns of
small high resistance wires ?

I have seen an aluminum bar stopped
dead in its tracks from a fall of
maybe two feet by a very strong
magnetic field.

There must have been many amps of current
induced in the rod to stop that momentum.

Regards,
geoff




----- Original Message ----- 
From: 
To: 
Sent: Monday, February 22, 2010 6:18 AM
Subject: Re: Velocity Sensor Designed Specifiically for diff input - Wire


> 
> In a message dated 22/02/2010, gmvoeth@........... writes:
> 
> Would it  be possible to use a
> single massive (ideal) wire like 1/4 inch
> in  diameter with a magnet then
> increase the voltage to be sensed
> simply  narrow the wire gradually
> to like 30 AWG wire in a current loop
> to act  as a concentrator to boost the voltage ?
> Sort of like water through a  pipe
> which narrows suddenly ?
> Is this silly  ?
> 
> 
> 
> Hi Geoff,
> 
>    Sorry, but this won't work. The analogy is not  correct. You need a lot 
> of turns N to generate a larger voltage = N x the flux  change.
> 
>    Regards,
> 
>    Chris Chapman
>


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Subject: Re: Velocity Sensor Designed Specifiically for diff input - Wire
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