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本文介绍单匝耦合变压器作为前置放大器和主放大器之间的隔离元件。由于其耦合电容小、绝缘性能好,从而提高了抗50Hz干扰的能力。只要注意制造工艺,就能容易得到CMRR>120db。
This article describes a single-turn coupling transformer as the preamplifier and the main amplifier isolation element. Due to its small coupling capacitance, good insulation properties, thereby improving the ability of anti-50Hz interference. Just pay attention to the manufacturing process, you can easily get CMRR> 120db.