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一种新型的集成电路上市时,常常会激起实验者各种各样的想象力。国家半导体公司的LM12强力放大器集成电路就是这样一种新的集成电路。所谓强力是指功率。单块IC对4欧姆负载能输出100W(RMS)。如果用2块LM12IC组成桥式结构,就能获得两倍的功率。如今(尤其是在具有极宽动态范围的CD音响方面)即使中等声级的重放也要求功放对峰值输入信号不产生削波。而LM12能满足这种峰值功率的需求。因此开始形成本放大器的设想,并且设计了两种独立的电源:一种是家用的110V交流电源;另一种是汽车用的12V直流电源。 LM12功率放大器具有理想声频放大器的
When a new type of integrated circuit goes on the market, it often invites experimenters with a variety of imagination. National Semiconductor LM12 powerful amplifier IC is such a new integrated circuit. The so-called power is power. A single IC can output 100W (RMS) to 4 ohm load. If you use two LM12IC bridge structure, you can get twice the power. Nowadays, especially in the case of CD audio with extremely wide dynamic range, playback at medium sound levels requires that the amplifier does not clip the peak input signal. The LM12 can meet this peak power requirements. Therefore, the idea of the amplifier was formed and two independent power supplies were designed: one is a household 110V AC power supply and the other is a 12V DC power supply for a car. LM12 Power Amplifier with Ideal Audio Amplifier