【摘要】 介绍了利用UC3845的PWM去控制反激式充电电路,将该电路运用于体外除颤器中,改变传统电路的正激式充电方式,大大提高了充电效率,缩短了充电时间。此外,还对电路中变压器设计作了详细的计算和对电路的工作原理进行了分析。更多还原

【Abstract】 This paper introduces a method of using the PWM controller of UC3845 in the fly-back charging circuit.And the circuit is very fit for the defibrillator.The new method has changed the traditional fly-forward charging circuit.It has improved the efficiency and shortened the time of charging circuit greatly.Also the paper introduces the designing process of how to calculate the fly-back transformer,and the principle of circuit is analyzed.更多还原