电流型功放与扬声器容易“匹配”,在抑制电感性负载反电动势方面,比其他放大器略胜一筹。因此,不少学者提出方案,“操刀”实践,颇有收获。今天介绍东洋音响专家藤井秀夫的力作。采用达林顿对管,三管复合,两对相并,使交越失真平移相消,是技术创新。在电路结构上是非常简洁的电流型功放,堪称“内秀外精高保真”电路。 任何一款直接耦合的电路作推挽功放,都要遇到一个最基本问题——交越失真。“三复两并”(三管复合,两对并联)的达林顿电路也不例外。它的伏安特性曲线“S”形,如图 Current amps and speakers are easy to “match” and outperform other amplifiers in terms of suppressing the inductive load back-EMF. Therefore, many scholars put forward the plan, “fencing” practice, quite rewarding. Today introduced Oriental acoustic expert Fujii Hideo masterpiece. The use of Darlington on the tube, three composite tube, two pairs of phase, so that crossover distortion offset cancellation, is a technological innovation. In the circuit structure is very simple current amplifier, called the “inside show outside the fidelity” circuit. Any direct-coupled circuit as a push-pull amplifier, have to encounter one of the most basic problems - crossover distortion. The Darlington circuit of “triple-combo” (three-transistor, two-pair in parallel) is no exception. Its volt-ampere characteristic curve “S” shape, as shown