| 摘要 |
<p>A low frequency output amplifying stage is designed for use in sound reproduction systems. The amplifying stage has two coupled operational amplifiers to minimise distortion effects. The outputs of the operational amplifiers (OA1, OA2) are coupled to the bases of two transistors (T1, T2) that are connected to operate in a complementary mode, i.e. one conducts when the other is inhibited. The transistors provide feedback coupling to the operational amplifier inputs.</p> |
