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实用新型
CN202887042U 一种带自启动电路的参考电压产生电路 失效 - 权利终止

一种带自启动电路的参考电压产生电路
摘要：
本实用新型提供了一种带自启动电路的参考电压产生电路。该带自启动电路的参考电压产生电路，包含有一运算放大装置，一自启动电路，第一电阻和第二电阻。该运算放大装置和第一电阻耦接成一正反馈环，该运算放大装置和第二电阻耦接成一负反馈环，用于在该负反馈环的增益大于正反馈环的增益时，该参考电压产生电路产生一参考电压。该自启动电路耦接于该运算放大装置，用于将该参考电压产生电路稳定在一工作点。本实用新型的电路不需要额外的电源电压，并且用电阻实现尾电流，减少电路噪声，也减小电路面积，节约成本。本实用新型电路利用自启动电路输出稳定在工作点的参考电压。
摘要（英）：

The utility model provides a reference voltage generating circuit with a self-starting circuit. The reference voltage generating circuit with the self-starting circuit comprises an operational amplifier, the self-starting circuit, a first resistor and a second resistor. The operation amplifier and the first resistor are connected in a coupling mode to form a positive feedback loop, and the operational amplifier is connected with the second resistor to form a negative feedback loop. When the gain of the negative feedback loop is larger than the gain of the positive feedback loop, the reference voltage generating circuit generates reference voltage. The self-starting circuit is connected with the operational amplifier in a coupling mode and used for enabling the reference voltage generating circuit to be stable in a working point. No extra power source voltage is needed in the reference voltage generating circuit, and tail current is achieved by using the resistors, and therefore circuit noise is reduced, circuit area is also reduced and cost is saved. The reference voltage generating circuit uses the self-starting circuit to output the reference voltage which is stable in the working point.

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