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音响发烧友,为了追求靓声常常废寝忘食焊机、摩机。最近,笔者得到了几枚精品运放经摩机取得较好的效果。笔者自制的一款功率放大器电路,如图所示。前置级用运放皇NE5532,功率级为直流伺服型恒流功放,(摩机时,精品运放转换速率较高或很高,而一般集成电路功放转换速率低,前后级配接虽能提高音质但也容易诱发讨厌的瞬态互调失真。采用恒流功放电路能很好地改善和消除这种失真,并且电路本身
Sound enthusiasts, in order to pursue the sound often sleepless nights welder, friction machine. Recently, I got a few pieces of high-quality op amp by the motor to achieve better results. I made a power amplifier circuit, as shown. Pre-stage with the op-amps Imperial NE5532, power-class DC servo constant current amplifier, (when the motor, high-quality op amp conversion rate is high or high, while the general IC amplifier conversion rate is low, Improve the sound quality but also easy to induce annoying transient intermodulation distortion.Using a constant current power amplifier circuit can be very good to improve and eliminate this distortion, and the circuit itself