20W Класс A Одноканальная и Двухканальная Печатная Плата Усилителя Музыкального Факса Новая Версия A1 08.

20W Класс A Одноканальная и Двухканальная Печатная Плата Усилителя Музыкального Факса Новая Версия A1 08.

The music fax A1 replica version of the Class A merged amplifier is a new type of amplifier launched in 2008. It is also known as the 08 version of the A1. The A1 replica version follows the appearance of the old A1. A larger improvement has been made, using the classic class A OCL amplifier circuit, using a constant current source and a current mirror circuit, and the output tube of the endless stage also uses a composite tube with a built-in temperature compensation element as the output tube. The temperature of the die is detected on the ground without thermal delay, which can effectively prevent the small deviation of the quiescent current and can effectively avoid the secondary thermal breakdown of the transistor.
The unclassified static current is 680ma, which is 120ma less than the old A1, so the calorific value is also smaller than the old A1. Information and circuits are taken from the fourth issue of (Radio and Television) magazine in 2010.

PCB is a mono structure, two boards are a set, one piece is two pieces of PCB, which can be shot directly.

PCBR size: 70MM X 70MM