JPH0336979U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram of a temperature correction circuit according to an embodiment of the invention, Fig. 2 is a temperature characteristic diagram of the output voltage of the magnetoresistive element in the above embodiment, and Fig. 3 is a diagram of the positive characteristic linear thermistor in the above embodiment. A temperature characteristic diagram of the feedback resistance due to the combined resistance of the negative characteristic thermistor and the adjustment resistor, Fig. 4 is a perspective view showing an example of a magnetoresistive element, and Fig. 5 shows the relationship between the magnet and the magnetoresistive element shown in Fig. 4. The perspective view and FIG. 6 are circuit diagrams using a conventional magnetoresistive element. 11... Positive characteristic linear thermistor, 12... Negative characteristic thermistor, 13-15... Adjustment resistor, 1
6... Differential amplifier, 17... Magnetoresistive element, 18
a to 18c...terminal, 21a, 21b...resistance.
In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] A three-terminal semiconductor magnetic resistance element that constitutes a bridge circuit with two resistors and includes a magnet, a differential amplifier that takes the deviation between the output voltage of this three-terminal semiconductor magnetic resistance element and a reference voltage, and an input of this differential amplifier. A temperature correction circuit connected between a terminal and an output terminal, comprising a positive characteristic linear thermistor, a negative characteristic thermistor, and an adjustment resistor, and comprising a feedback resistor for correcting temperature variations in the output of the three-terminal semiconductor magnetic resistance element.