Patent ID: 9306501
Filing Date: 2016-04-05
CPC Classification: H03F

Claim Text:
1. A voltage adjusting circuit, configured to operably provide a first power signal and a second power signal to an amplifier circuit so that the amplifier circuit provides an output signal to a load according to an input signal, the first power signal and the second power signal, comprising: a reference voltage generating circuit configured to operably configure the first power signal to be a first signal value and configure the second power signal to be a second signal value in a first time period; a subtractor circuit coupled with the reference voltage generating circuit for generating a difference signal according to at least one of the first power signal and the second power signal and according to the output signal; a threshold generating circuit configured to operably generate a first threshold signal; and a comparator circuit coupled with the threshold generating circuit and the subtractor circuit for comparing the first threshold signal and the difference signal; wherein when the difference signal is greater than the first threshold signal, the comparator circuit configures the reference voltage generating circuit to configure the first power signal to be a third signal value and configure the second power signal to be a fourth signal value in a second time period; the third signal value is less than the first signal value; and the fourth signal value is greater than or equal to the second signal value.