Sensor threshold circuit

B T CONTThere is provided a sensor threshold circuit that makes available a hysteresis width that is not dependent on the change in a threshold point. Since a bias current Iis generated by a threshold current Iand a threshold adjusting current I, the threshold point is given by a coefficient A and a...

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Main Author Yoshioka, Sayaka
Format Patent
LanguageEnglish
Published 08.11.2011
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Abstract B T CONTThere is provided a sensor threshold circuit that makes available a hysteresis width that is not dependent on the change in a threshold point. Since a bias current Iis generated by a threshold current Iand a threshold adjusting current I, the threshold point is given by a coefficient A and a coefficient K and the hysteresis width |BH| is given by the coefficient K. Accordingly, when the coefficient K is determined, the hysteresis width |BH| is not dependent on the coefficient A and keeps a constant value. In addition, since the coefficient A depends on the resistance ratio, the threshold point is variable by changing a single resistor. Further, when the coefficient K is determined, the hysteresis width |BH| is also determined to be a single value with no variations in its value, no changes according to temperature, and no changes over time.
AbstractList B T CONTThere is provided a sensor threshold circuit that makes available a hysteresis width that is not dependent on the change in a threshold point. Since a bias current Iis generated by a threshold current Iand a threshold adjusting current I, the threshold point is given by a coefficient A and a coefficient K and the hysteresis width |BH| is given by the coefficient K. Accordingly, when the coefficient K is determined, the hysteresis width |BH| is not dependent on the coefficient A and keeps a constant value. In addition, since the coefficient A depends on the resistance ratio, the threshold point is variable by changing a single resistor. Further, when the coefficient K is determined, the hysteresis width |BH| is also determined to be a single value with no variations in its value, no changes according to temperature, and no changes over time.
Author Yoshioka, Sayaka
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References Woong et al. (2007/0096829) 20070500
Chang et al. (2007/0186663) 20070800
(06-090143) 19940300
So et al. (6803776) 20041000
(2008-203202) 20080900
Panhofer (7609075) 20091000
(10-038931) 19980200
(2001-108480) 20010400
Wray (5923024) 19990700
(2008-203201) 20080900
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Snippet B T CONTThere is provided a sensor threshold circuit that makes available a hysteresis width that is not dependent on the change in a threshold point. Since a...
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