| 摘要 |
The present invention relates to a d-grade digital amplifier which separates an audio signal and a control signal to perform d-grade digital amplification having an insulating property of an output signal without a large output trans, then connects to an amplification unit through an insulation unit, allows to use a line transistor for a small signal connected to an input terminal of the audio signal, and makes the insulating unit connected to an input terminal of the control signal to use a photocoupler. Therefore, the amplifier can be miniaturized, light weight, and highly effective. |
