Re: Weak Magnetic Field Sensing

Christopher wrote:

Hello Everyone,


Weak Magnetic Field Sensing

Before I begin to chase the madness into the evening, I would like to
know if using a magnetic sensor like the Hall Effect would allow me to
convert "a small magnetic rod's distance into resistance. " The few
circuits sensing magnetism I see seem to be more of a window
comparator behavior or 0/1 or a tripped on state.

Ideal: is a strong "hand held" magnet moving 8" to 1" from the sensor,
this would create a resistance change of 10k down to 1k or something
to that effect not necessarily that resistance change.

Question: Is this conversion possible or unreasonable?

Thank you for any input or humor,

By AC excitation, the sensitivity of a Hall element
can be enhanced by a few orders of magnitude.
Lookup the term "lock-in amplifier".

Rene
--
Ing.Buero R.Tschaggelar - http://www.ibrtses.com
& commercial newsgroups - http://www.talkto.net
*** Free account sponsored by SecureIX.com ***
*** Encrypt your Internet usage with a free VPN account from http://www.SecureIX.com ***
.

Relevant Pages

  • Re: Weak Magnetic Field Sensing
    ... Weak Magnetic Field Sensing ... circuits sensing magnetism I see seem to be more of a window ... to that effect not necessarily that resistance change. ...
    (sci.electronics.design)
  • Re: Weak Magnetic Field Sensing
    ... Weak Magnetic Field Sensing ... know if using a magnetic sensor like the Hall Effect would allow me to ... circuits sensing magnetism I see seem to be more of a window ... to that effect not necessarily that resistance change. ...
    (sci.electronics.design)