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    • 34. 发明公开
    • A temperature-compensated current generator, for instance for 1-10V interfaces
    • Temperaturkompensierter Stromgenerator,z.B. für1-10-Volt-Schnittstellen
    • EP1865398A1
    • 2007-12-12
    • EP06425386.7
    • 2006-06-07
    • Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbHOSRAM S.P.A. - SOCIETA' RIUNITE OSRAM EDISON CLERICI
    • Ferro, Alberto
    • G05F3/22
    • G05F3/225
    • A current generator arrangement for use, e.g., in 1-10V interfaces for lighting systems, includes at least one transistor (Q3) having a base-emitter junction wherein the voltage drop across the base-emitter junction defines the intensity of the output current and wherein the base-emitter junction is exposed to temperature drift. A resistive network (R eq2 ) is coupled to the transistor (Q3), whereby the intensity of the output current is a function of both the voltage drop across the base-emitter junction of the transistor (Q3) and the resistance value of the resistive network (R eq2 ). The resistive network (R eq2 ) includes at least one resistor element (NTC3; NTC4) whose resistance value varies with temperature to keep constant the intensity of the output current irrespective of any temperature drift in the voltage drop across the base-emitter junction of the transistor (Q3).
    • 用于照明系统的1-10V接口中使用的电流发生器装置包括至少一个具有基极 - 发射极结的晶体管(Q3),其中基极 - 发射极结两端的电压降定义了输出电流的强度, 其中基极 - 发射极结暴露于温度漂移。 电阻网络(R eq2)耦合到晶体管(Q3),由此输出电流的强度是晶体管(Q3)的基极 - 发射极结两端的电压降与电阻 网络(R eq2)。 电阻网络(R eq2)包括至少一个电阻值随温度变化的电阻元件(NTC3; NTC4),以保持恒定的输出电流的强度,而不考虑跨越基极 - 发射极结的电压降中的任何温度漂移 晶体管(Q3)。