Amplifiers – With hall effect type means
Patent
1993-12-17
1994-08-02
Mottola, Steven
Amplifiers
With hall effect type means
330 9, H03F 1500, H03F 102
Patent
active
053349440
ABSTRACT:
A differential amplifier circuit suitable for amplifying a faint signal, such as the output of a magnetic sensor including a Hall element. The differential amplifier circuit includes switching units which are provided at the input and output terminals of a differential amplifier to switch the polarity of the input and output signals, and low pass filters which are provided at the output terminals to remove the switching frequency component from the output signal, thus working as an ideal amplifier with no offset voltage. Furthermore, by alternating the polarity of driving current of the Hall element for inverting the polarity of the input signal of the differential amplifier, an error voltage of the Hall element caused by location error of the output electrodes and the voltage drop across them can be eliminated at the same time.
REFERENCES:
patent: 4134030 (1979-01-01), Pace
patent: 4138649 (1979-02-01), Schaffer
Mottola Steven
Sumitomo Electric Industries Ltd.
LandOfFree
Differential amplifier circuit for enhancing small voltage signa does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Differential amplifier circuit for enhancing small voltage signa, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential amplifier circuit for enhancing small voltage signa will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-67278