Appeal No. 1997-0272
Application No. 08/277,388
sensitive resistor associated therewith is not placed in the
signal path of the Hall output signal so that the resistor is
used to respond to changes in temperature but is not affected
by changes in the Hall output voltage caused by circumstances
other than temperature changes.
Representative independent claim 1 is reproduced as
follows:
1. A Hall effect element circuit, comprising:
a Hall effect element having a first output signal
which is representative of a magnetic field imposed on said
Hall effect element;
an amplification circuit having an input connected
in signal communication with said first output signal, said
amplification circuit having a second output signal which is
representative of said magnetic field; and
a temperature compensation circuit for compensating
said second output signal for changes in temperature, said
temperature compensation circuit having at least one
temperature sensitive resistor, said temperature compensation
circuit being connected to said amplification circuit to
receive said second output signal, said temperature sensitive
resistor being connected within said Hall effect element
circuit in a manner which prevents changes in said first
output signal from affecting a voltage potential across said
temperature sensitive resistor.
The examiner relies on the following references:
Rao et al. 3,882,725 May 13, 1975
(Rao)
2
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 Next
Last modified: November 3, 2007