关于UC3909,在空载时,测得19脚频率为220K,15脚输出电压为2.45V,但我给24V电池充电时,在横流阶段,我设定的充电电流为1.5A,但实际电流远大于2A,是什么原因? 并且5脚输出一直为高电平?
图如附件。
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关于UC3909,在空载时,测得19脚频率为220K,15脚输出电压为2.45V,但我给24V电池充电时,在横流阶段,我设定的充电电流为1.5A,但实际电流远大于2A,是什么原因? 并且5脚输出一直为高电平?
图如附件。