| 摘要 |
PURPOSE:To provide the DC restoration circuit in an AC amplifier circuit in which a DC restoration characteristic is not deteriorated for a long time, a low frequency characteristic is excellent and miniaturization and light weight are attained. CONSTITUTION:A comparator means 1 in the DC restoration circuit clamping a level of an input signal to a prescribed voltage for each prescribed period and generating an output signal generates an error signal between an output signal voltage and a clamp voltage, a voltage latch means 2 latches the error signal voltage for each clamp period and generates a control signal voltage and an adder means 3 adds the control signal voltage and the input signal to generate the output signal. |
