| 摘要 |
A noise canceling circuit much improved in stability and in the capability of filtering out ripple noises even when operating current and idling current are made very small without increasing the gain of an error amplifier. In a stabilized voltage output apparatus including the error amplifier and a reference voltage source, the error amplifier has a first type input section and a second type load section, and a noise suppressing section consisting of sets of first type semiconductor elements is disposed between the input section and the load section. The sets of semiconductor elements of the noise suppressing section are constituted of different dimensions to suppress the power source voltage dependency of the output voltage.
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