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压控恒流源电路

Other Parts Discussed in Thread: TIPD102

压控恒流输出电路,如下:

如 LOAD的阻值在500欧到5K欧之间变动时,输出电流会明显变化。

请推荐,在输入为0到3V间变化,输出能恒定输出500uA到5mA,负载在500到5K欧变动时。输出电流波动不大的电路。

输出端电源在30V以内。