| 摘要 |
PURPOSE: By being proceed to the control cycle specified in the negative close loop only the correction operation the negative close loop amplifier irrespective governs a family the influence about the audio signal with the long circuit path of the negative close loop. CONSTITUTION: A differential amplifier is composed of the emitter bond of the negative polarity transistor(Q72) which is input the negative feedback signal and the straight polarity transistor(Q71) which is input the input signal. The primary amplification section is composed between the differential amplifier output described in the above and feedback unit input of a plurality of amplifier stages. The output unit runs the load to the amplified signal. The feedback unit is inputted the input signal to the base of the straight polarity transistor. The amplified signal as described above is drawn from the collector of the negative polarity transistor. It is composed of the negative polarity transistor of the differential amplifier, primary amplification section, and the output unit and feedback unit is the close loop. |
