发明名称 |
Circuit for generating a reference voltage that varies as a function of temperature, in particular for regulating the voltage at which a battery is charged by an alternator |
摘要 |
A circuit for generating a reference voltage that varies as a function of temperature, in particular for regulating the voltage at which a battery is charged by an alternator, wherein the circuit comprises: a source of a voltage that is fixed regardless of temperature; two bipolar transistors whose bases are interconnected and whose base-emitter junctions have different temperature behaviors, with constant currents flowing through each of them; a first resistor connected between the emitters of the two transistors, with the voltage across the terminals thereof being representative of the temperature to which the two transistors are exposed; and a second resistor connected between the fixed voltage source and an output for the reference voltage, and through which a current may flow, at least over a predetermined range of temperatures, which current is equal to the additional current induced by an increase in the voltage across the terminals of said first resistor relative to a voltage which corresponds to a critical temperature.
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申请公布号 |
US5309083(A) |
申请公布日期 |
1994.05.03 |
申请号 |
US19920832015 |
申请日期 |
1992.02.06 |
申请人 |
VALEO EQUIPEMENTS ELECTRIQUES MOTEUR |
发明人 |
PIERRET, JEAN-MARIE;CANITROT, DIDIER |
分类号 |
G05F3/26;G05F3/30;H02J7/14;H02J7/16;(IPC1-7):G05F3/30 |
主分类号 |
G05F3/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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